πŸ“¦llvm-defaults

"llvm-defaults" is a collection of tools and libraries that provide a complete development environment for LLVM-based projects on Debian systems.

LLVM is a collection of modular and reusable compiler and toolchain technologies. llvm-defaults is a tool that simplifies the installation and management of LLVM packages on Debian-based Linux distributions. It provides a meta-package that depends on the appropriate version of LLVM and its associated libraries and tools. By using llvm-defaults, users can easily install and maintain LLVM packages, including Clang, a popular C++ compiler, and other development tools that rely on LLVM. The tool also ensures that the correct dependencies are installed and that upgrades are smooth and error-free. LLVM and llvm-defaults are widely used in the development of operating systems, programming languages, and other software that require efficient and reliable compilation and optimization.

Packages and Binaries:

clang

Clang project is a C, C++, Objective C and Objective C++ front-end for the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC).

Clang implements all of the ISO C++ 1998, 11 and 14 standards and also provides most of the support of C++17.

This is a dependency package providing the default clang compiler.

Installed size: 19 KB How to install: sudo apt install clang

Dependencies:
  • clang-14

asan_symbolize

:~# asan_symbolize -h
usage: asan_symbolize [-h] [-d] [-c CROSS_COMPILE] [-l LOGFILE]
                      [--force-system-symbolizer] [--log-dest LOG_DEST]
                      [--log-level {debug,info,warning,error,critical}]
                      [-p PLUGINS [PLUGINS ...]] [--module-map MODULE_MAP]
                      [--skip-uuid-validation] [-s SYSROOT]
                      [path_to_cut ...]

ASan symbolization script

positional arguments:
  path_to_cut           pattern to be cut from the result file path

options:
  -h, --help            show this help message and exit
  -d, --demangle        demangle function names
  -c CROSS_COMPILE      set prefix for binutils
  -l LOGFILE, --logfile LOGFILE
                        set log file name to parse, default is stdin
  --force-system-symbolizer
                        don't use llvm-symbolizer
  --log-dest LOG_DEST   Destination path for script logging (default stderr).
  --log-level {debug,info,warning,error,critical}
                        Log level for script (default: info).
  -p PLUGINS [PLUGINS ...], --plugins PLUGINS [PLUGINS ...]
                        Load plug-in
  --module-map MODULE_MAP
                        Path to text file containing module mapoutput. See
                        print_module_map ASan option.
  --skip-uuid-validation
                        Skips validating UUID of modules using otool.
  -s SYSROOT            set path to sysroot for sanitized binaries

Example of use:
  asan_symbolize.py -c "$HOME/opt/cross/bin/arm-linux-gnueabi-" -s "$HOME/SymbolFiles" < asan.log

PLUGINS

This script provides a way for external plug-ins to hook into the behaviour of
various parts of this script (see `--plugins`). This is useful for situations
where it is necessary to handle site-specific quirks (e.g. binaries with debug
symbols only accessible via a remote service) without having to modify the
script itself.

clang

The Clang C, C++, and Objective-C compiler

:~# clang --help
OVERVIEW: clang LLVM compiler

USAGE: clang [options] file...

OPTIONS:
  -###                    Print (but do not run) the commands to run for this compilation
  --amdgpu-arch-tool=<value>
                          Tool used for detecting AMD GPU arch in the system.
  --analyzer-output <value>
                          Static analyzer report output format (html|plist|plist-multi-file|plist-html|sarif|sarif-html|text).
  --analyze               Run the static analyzer
  -arcmt-migrate-emit-errors
                          Emit ARC errors even if the migrator can fix them
  -arcmt-migrate-report-output <value>
                          Output path for the plist report
  -B <prefix>             Search $prefix$file for executables, libraries, and data files. If $prefix is a directory, search $prefix/$file
  -b <arg>                Pass -b <arg> to the linker on AIX (only).
  -CC                     Include comments from within macros in preprocessed output
  -cl-denorms-are-zero    OpenCL only. Allow denormals to be flushed to zero.
  -cl-fast-relaxed-math   OpenCL only. Sets -cl-finite-math-only and -cl-unsafe-math-optimizations, and defines __FAST_RELAXED_MATH__.
  -cl-finite-math-only    OpenCL only. Allow floating-point optimizations that assume arguments and results are not NaNs or +-Inf.
  -cl-fp32-correctly-rounded-divide-sqrt
                          OpenCL only. Specify that single precision floating-point divide and sqrt used in the program source are correctly rounded.
  -cl-kernel-arg-info     OpenCL only. Generate kernel argument metadata.
  -cl-mad-enable          OpenCL only. Allow use of less precise MAD computations in the generated binary.
  -cl-no-signed-zeros     OpenCL only. Allow use of less precise no signed zeros computations in the generated binary.
  -cl-no-stdinc           OpenCL only. Disables all standard includes containing non-native compiler types and functions.
  -cl-opt-disable         OpenCL only. This option disables all optimizations. By default optimizations are enabled.
  -cl-single-precision-constant
                          OpenCL only. Treat double precision floating-point constant as single precision constant.
  -cl-std=<value>         OpenCL language standard to compile for.
  -cl-strict-aliasing     OpenCL only. This option is added for compatibility with OpenCL 1.0.
  -cl-uniform-work-group-size
                          OpenCL only. Defines that the global work-size be a multiple of the work-group size specified to clEnqueueNDRangeKernel
  -cl-unsafe-math-optimizations
                          OpenCL only. Allow unsafe floating-point optimizations.  Also implies -cl-no-signed-zeros and -cl-mad-enable.
  --config <value>        Specifies configuration file
  --cuda-compile-host-device
                          Compile CUDA code for both host and device (default).  Has no effect on non-CUDA compilations.
  --cuda-device-only      Compile CUDA code for device only
  --cuda-host-only        Compile CUDA code for host only.  Has no effect on non-CUDA compilations.
  --cuda-include-ptx=<value>
                          Include PTX for the following GPU architecture (e.g. sm_35) or 'all'. May be specified more than once.
  --cuda-noopt-device-debug
                          Enable device-side debug info generation. Disables ptxas optimizations.
  --cuda-path-ignore-env  Ignore environment variables to detect CUDA installation
  --cuda-path=<value>     CUDA installation path
  -cuid=<value>           An ID for compilation unit, which should be the same for the same compilation unit but different for different compilation units. It is used to externalize device-side static variables for single source offloading languages CUDA and HIP so that they can be accessed by the host code of the same compilation unit.
  -cxx-isystem <directory>
                          Add directory to the C++ SYSTEM include search path
  -C                      Include comments in preprocessed output
  -c                      Only run preprocess, compile, and assemble steps
  -dD                     Print macro definitions in -E mode in addition to normal output
  -dependency-dot <value> Filename to write DOT-formatted header dependencies to
  -dependency-file <value>
                          Filename (or -) to write dependency output to
  -dI                     Print include directives in -E mode in addition to normal output
  -dM                     Print macro definitions in -E mode instead of normal output
  -dsym-dir <dir>         Directory to output dSYM's (if any) to
  -D <macro>=<value>      Define <macro> to <value> (or 1 if <value> omitted)
  -emit-ast               Emit Clang AST files for source inputs
  -emit-interface-stubs   Generate Interface Stub Files.
  -emit-llvm              Use the LLVM representation for assembler and object files
  -emit-merged-ifs        Generate Interface Stub Files, emit merged text not binary.
  --emit-static-lib       Enable linker job to emit a static library.
  -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
                          Trivial automatic variable initialization to zero is only here for benchmarks, it'll eventually be removed, and I'm OK with that because I'm only using it to benchmark
  --end-no-unused-arguments
                          Start emitting warnings for unused driver arguments
  -extract-api            Extract API information
  -E                      Only run the preprocessor
  -faapcs-bitfield-load   Follows the AAPCS standard that all volatile bit-field write generates at least one load. (ARM only).
  -faapcs-bitfield-width  Follow the AAPCS standard requirement stating that volatile bit-field width is dictated by the field container type. (ARM only).
  -faddrsig               Emit an address-significance table
  -falign-loops=<N>       N must be a power of two. Align loops to the boundary
  -faligned-allocation    Enable C++17 aligned allocation functions
  -fallow-editor-placeholders
                          Treat editor placeholders as valid source code
  -faltivec-src-compat=<value>
                          Source-level compatibility for Altivec vectors (for PowerPC targets). This includes results of vector comparison (scalar for 'xl', vector for 'gcc') as well as behavior when initializing with a scalar (splatting for 'xl', element zero only for 'gcc'). For 'mixed', the compatibility is as 'gcc' for 'vector bool/vector pixel' and as 'xl' for other types. Current default is 'mixed'.
  -fansi-escape-codes     Use ANSI escape codes for diagnostics
  -fapple-kext            Use Apple's kernel extensions ABI
  -fapple-link-rtlib      Force linking the clang builtins runtime library
  -fapple-pragma-pack     Enable Apple gcc-compatible #pragma pack handling
  -fapplication-extension Restrict code to those available for App Extensions
  -fapprox-func           Allow certain math function calls to be replaced with an approximately equivalent calculation
  -fasync-exceptions      Enable EH Asynchronous exceptions
  -fbasic-block-sections=<value>
                          Place each function's basic blocks in unique sections (ELF Only) : all | labels | none | list=<file>
  -fbinutils-version=<major.minor>
                          Produced object files can use all ELF features supported by this binutils version and newer. If -fno-integrated-as is specified, the generated assembly will consider GNU as support. 'none' means that all ELF features can be used, regardless of binutils support. Defaults to 2.26.
  -fblocks                Enable the 'blocks' language feature
  -fborland-extensions    Accept non-standard constructs supported by the Borland compiler
  -fbuild-session-file=<file>
                          Use the last modification time of <file> as the build session timestamp
  -fbuild-session-timestamp=<time since Epoch in seconds>
                          Time when the current build session started
  -fbuiltin-module-map    Load the clang builtins module map file.
  -fc++-abi=<value>       C++ ABI to use. This will override the target C++ ABI.
  -fcall-saved-x10        Make the x10 register call-saved (AArch64 only)
  -fcall-saved-x11        Make the x11 register call-saved (AArch64 only)
  -fcall-saved-x12        Make the x12 register call-saved (AArch64 only)
  -fcall-saved-x13        Make the x13 register call-saved (AArch64 only)
  -fcall-saved-x14        Make the x14 register call-saved (AArch64 only)
  -fcall-saved-x15        Make the x15 register call-saved (AArch64 only)
  -fcall-saved-x18        Make the x18 register call-saved (AArch64 only)
  -fcall-saved-x8         Make the x8 register call-saved (AArch64 only)
  -fcall-saved-x9         Make the x9 register call-saved (AArch64 only)
  -fcf-protection=<value> Instrument control-flow architecture protection. Options: return, branch, full, none.
  -fcf-protection         Enable cf-protection in 'full' mode
  -fchar8_t               Enable C++ builtin type char8_t
  -fclang-abi-compat=<version>
                          Attempt to match the ABI of Clang <version>
  -fcolor-diagnostics     Enable colors in diagnostics
  -fcomment-block-commands=<arg>
                          Treat each comma separated argument in <arg> as a documentation comment block command
  -fcommon                Place uninitialized global variables in a common block
  -fcomplete-member-pointers
                          Require member pointer base types to be complete if they would be significant under the Microsoft ABI
  -fconvergent-functions  Assume functions may be convergent
  -fcoroutines-ts         Enable support for the C++ Coroutines TS
  -fcoverage-compilation-dir=<value>
                          The compilation directory to embed in the coverage mapping.
  -fcoverage-mapping      Generate coverage mapping to enable code coverage analysis
  -fcoverage-prefix-map=<value>
                          remap file source paths in coverage mapping
  -fcrash-diagnostics-dir=<dir>
                          Put crash-report files in <dir>
  -fcs-profile-generate=<directory>
                          Generate instrumented code to collect context sensitive execution counts into <directory>/default.profraw (overridden by LLVM_PROFILE_FILE env var)
  -fcs-profile-generate   Generate instrumented code to collect context sensitive execution counts into default.profraw (overridden by LLVM_PROFILE_FILE env var)
  -fcuda-approx-transcendentals
                          Use approximate transcendental functions
  -fcuda-short-ptr        Use 32-bit pointers for accessing const/local/shared address spaces
  -fcxx-exceptions        Enable C++ exceptions
  -fcxx-modules           Enable modules for C++
  -fdata-sections         Place each data in its own section
  -fdebug-compilation-dir=<value>
                          The compilation directory to embed in the debug info
  -fdebug-default-version=<value>
                          Default DWARF version to use, if a -g option caused DWARF debug info to be produced
  -fdebug-info-for-profiling
                          Emit extra debug info to make sample profile more accurate
  -fdebug-macro           Emit macro debug information
  -fdebug-prefix-map=<value>
                          remap file source paths in debug info
  -fdebug-ranges-base-address
                          Use DWARF base address selection entries in .debug_ranges
  -fdebug-types-section   Place debug types in their own section (ELF Only)
  -fdeclspec              Allow __declspec as a keyword
  -fdelayed-template-parsing
                          Parse templated function definitions at the end of the translation unit
  -fdelete-null-pointer-checks
                          Treat usage of null pointers as undefined behavior (default)
  -fdiagnostics-absolute-paths
                          Print absolute paths in diagnostics
  -fdiagnostics-hotness-threshold=<value>
                          Prevent optimization remarks from being output if they do not have at least this profile count. Use 'auto' to apply the threshold from profile summary
  -fdiagnostics-parseable-fixits
                          Print fix-its in machine parseable form
  -fdiagnostics-print-source-range-info
                          Print source range spans in numeric form
  -fdiagnostics-show-hotness
                          Enable profile hotness information in diagnostic line
  -fdiagnostics-show-note-include-stack
                          Display include stacks for diagnostic notes
  -fdiagnostics-show-option
                          Print option name with mappable diagnostics
  -fdiagnostics-show-template-tree
                          Print a template comparison tree for differing templates
  -fdigraphs              Enable alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:' (default)
  -fdirect-access-external-data
                          Don't use GOT indirection to reference external data symbols
  -fdiscard-value-names   Discard value names in LLVM IR
  -fdollars-in-identifiers
                          Allow '$' in identifiers
  -fdouble-square-bracket-attributes
                          Enable '[[]]' attributes in all C and C++ language modes
  -fdwarf-exceptions      Use DWARF style exceptions
  -feliminate-unused-debug-types
                          Do not emit  debug info for defined but unused types
  -fembed-bitcode-marker  Embed placeholder LLVM IR data as a marker
  -fembed-bitcode=<option>
                          Embed LLVM bitcode (option: off, all, bitcode, marker)
  -fembed-bitcode         Embed LLVM IR bitcode as data
  -fembed-offload-object=<value>
                          Embed Offloading device-side binary into host object file as a section.
  -femit-all-decls        Emit all declarations, even if unused
  -femulated-tls          Use emutls functions to access thread_local variables
  -fenable-matrix         Enable matrix data type and related builtin functions
  -fexceptions            Enable support for exception handling
  -fexperimental-new-constant-interpreter
                          Enable the experimental new constant interpreter
  -fexperimental-relative-c++-abi-vtables
                          Use the experimental C++ class ABI for classes with virtual tables
  -fexperimental-strict-floating-point
                          Enables experimental strict floating point in LLVM.
  -fextend-arguments=<value>
                          Controls how scalar integer arguments are extended in calls to unprototyped and varargs functions
  -ffast-math             Allow aggressive, lossy floating-point optimizations
  -ffile-compilation-dir=<value>
                          The compilation directory to embed in the debug info and coverage mapping.
  -ffile-prefix-map=<value>
                          remap file source paths in debug info, predefined preprocessor macros and __builtin_FILE()
  -ffine-grained-bitfield-accesses
                          Use separate accesses for consecutive bitfield runs with legal widths and alignments.
  -ffinite-loops          Assume all loops are finite.
  -ffixed-a0              Reserve the a0 register (M68k only)
  -ffixed-a1              Reserve the a1 register (M68k only)
  -ffixed-a2              Reserve the a2 register (M68k only)
  -ffixed-a3              Reserve the a3 register (M68k only)
  -ffixed-a4              Reserve the a4 register (M68k only)
  -ffixed-a5              Reserve the a5 register (M68k only)
  -ffixed-a6              Reserve the a6 register (M68k only)
  -ffixed-d0              Reserve the d0 register (M68k only)
  -ffixed-d1              Reserve the d1 register (M68k only)
  -ffixed-d2              Reserve the d2 register (M68k only)
  -ffixed-d3              Reserve the d3 register (M68k only)
  -ffixed-d4              Reserve the d4 register (M68k only)
  -ffixed-d5              Reserve the d5 register (M68k only)
  -ffixed-d6              Reserve the d6 register (M68k only)
  -ffixed-d7              Reserve the d7 register (M68k only)
  -ffixed-point           Enable fixed point types
  -ffixed-r19             Reserve register r19 (Hexagon only)
  -ffixed-r9              Reserve the r9 register (ARM only)
  -ffixed-x10             Reserve the x10 register (AArch64/RISC-V only)
  -ffixed-x11             Reserve the x11 register (AArch64/RISC-V only)
  -ffixed-x12             Reserve the x12 register (AArch64/RISC-V only)
  -ffixed-x13             Reserve the x13 register (AArch64/RISC-V only)
  -ffixed-x14             Reserve the x14 register (AArch64/RISC-V only)
  -ffixed-x15             Reserve the x15 register (AArch64/RISC-V only)
  -ffixed-x16             Reserve the x16 register (AArch64/RISC-V only)
  -ffixed-x17             Reserve the x17 register (AArch64/RISC-V only)
  -ffixed-x18             Reserve the x18 register (AArch64/RISC-V only)
  -ffixed-x19             Reserve the x19 register (AArch64/RISC-V only)
  -ffixed-x1              Reserve the x1 register (AArch64/RISC-V only)
  -ffixed-x20             Reserve the x20 register (AArch64/RISC-V only)
  -ffixed-x21             Reserve the x21 register (AArch64/RISC-V only)
  -ffixed-x22             Reserve the x22 register (AArch64/RISC-V only)
  -ffixed-x23             Reserve the x23 register (AArch64/RISC-V only)
  -ffixed-x24             Reserve the x24 register (AArch64/RISC-V only)
  -ffixed-x25             Reserve the x25 register (AArch64/RISC-V only)
  -ffixed-x26             Reserve the x26 register (AArch64/RISC-V only)
  -ffixed-x27             Reserve the x27 register (AArch64/RISC-V only)
  -ffixed-x28             Reserve the x28 register (AArch64/RISC-V only)
  -ffixed-x29             Reserve the x29 register (AArch64/RISC-V only)
  -ffixed-x2              Reserve the x2 register (AArch64/RISC-V only)
  -ffixed-x30             Reserve the x30 register (AArch64/RISC-V only)
  -ffixed-x31             Reserve the x31 register (AArch64/RISC-V only)
  -ffixed-x3              Reserve the x3 register (AArch64/RISC-V only)
  -ffixed-x4              Reserve the x4 register (AArch64/RISC-V only)
  -ffixed-x5              Reserve the x5 register (AArch64/RISC-V only)
  -ffixed-x6              Reserve the x6 register (AArch64/RISC-V only)
  -ffixed-x7              Reserve the x7 register (AArch64/RISC-V only)
  -ffixed-x8              Reserve the x8 register (AArch64/RISC-V only)
  -ffixed-x9              Reserve the x9 register (AArch64/RISC-V only)
  -fforce-dwarf-frame     Always emit a debug frame section
  -fforce-emit-vtables    Emits more virtual tables to improve devirtualization
  -fforce-enable-int128   Enable support for int128_t type
  -ffp-contract=<value>   Form fused FP ops (e.g. FMAs): fast (fuses across statements disregarding pragmas) | on (only fuses in the same statement unless dictated by pragmas) | off (never fuses) | fast-honor-pragmas (fuses across statements unless diectated by pragmas). Default is 'fast' for CUDA, 'fast-honor-pragmas' for HIP, and 'on' otherwise.
  -ffp-exception-behavior=<value>
                          Specifies the exception behavior of floating-point operations.
  -ffp-model=<value>      Controls the semantics of floating-point calculations.
  -ffreestanding          Assert that the compilation takes place in a freestanding environment
  -ffuchsia-api-level=<value>
                          Set Fuchsia API level
  -ffunction-sections     Place each function in its own section
  -fglobal-isel           Enables the global instruction selector
  -fgnu-keywords          Allow GNU-extension keywords regardless of language standard
  -fgnu-runtime           Generate output compatible with the standard GNU Objective-C runtime
  -fgnu89-inline          Use the gnu89 inline semantics
  -fgnuc-version=<value>  Sets various macros to claim compatibility with the given GCC version (default is 4.2.1)
  -fgpu-allow-device-init Allow device side init function in HIP (experimental)
  -fgpu-defer-diag        Defer host/device related diagnostic messages for CUDA/HIP
  -fgpu-flush-denormals-to-zero
                          Flush denormal floating point values to zero in CUDA/HIP device mode.
  -fgpu-rdc               Generate relocatable device code, also known as separate compilation mode
  -fgpu-sanitize          Enable sanitizer for AMDGPU target
  -fhip-fp32-correctly-rounded-divide-sqrt
                          Specify that single precision floating-point divide and sqrt used in the program source are correctly rounded (HIP device compilation only)
  -fhip-new-launch-api    Use new kernel launching API for HIP
  -fignore-exceptions     Enable support for ignoring exception handling constructs
  -fimplicit-module-maps  Implicitly search the file system for module map files.
  -finline-functions      Inline suitable functions
  -finline-hint-functions Inline functions which are (explicitly or implicitly) marked inline
  -finput-charset=<value> Specify the default character set for source files
  -finstrument-function-entry-bare
                          Instrument function entry only, after inlining, without arguments to the instrumentation call
  -finstrument-functions-after-inlining
                          Like -finstrument-functions, but insert the calls after inlining
  -finstrument-functions  Generate calls to instrument function entry and exit
  -fintegrated-as         Enable the integrated assembler
  -fintegrated-cc1        Run cc1 in-process
  -fjump-tables           Use jump tables for lowering switches
  -fkeep-static-consts    Keep static const variables if unused
  -flax-vector-conversions=<value>
                          Enable implicit vector bit-casts
  -flegacy-pass-manager   Use the legacy pass manager in LLVM (deprecated, to be removed in a future release)
  -flto-jobs=<value>      Controls the backend parallelism of -flto=thin (default of 0 means the number of threads will be derived from the number of CPUs detected)
  -flto=auto              Enable LTO in 'full' mode
  -flto=jobserver         Enable LTO in 'full' mode
  -flto=<value>           Set LTO mode to either 'full' or 'thin'
  -flto                   Enable LTO in 'full' mode
  -fmacro-prefix-map=<value>
                          remap file source paths in predefined preprocessor macros and __builtin_FILE()
  -fmath-errno            Require math functions to indicate errors by setting errno
  -fmax-tokens=<value>    Max total number of preprocessed tokens for -Wmax-tokens.
  -fmax-type-align=<value>
                          Specify the maximum alignment to enforce on pointers lacking an explicit alignment
  -fmemory-profile=<directory>
                          Enable heap memory profiling and dump results into <directory>
  -fmemory-profile        Enable heap memory profiling
  -fmerge-all-constants   Allow merging of constants
  -fmessage-length=<value>
                          Format message diagnostics so that they fit within N columns
  -fminimize-whitespace   Minimize whitespace when emitting preprocessor output
  -fmodule-file=[<name>=]<file>
                          Specify the mapping of module name to precompiled module file, or load a module file if name is omitted.
  -fmodule-map-file=<file>
                          Load this module map file
  -fmodule-name=<name>    Specify the name of the module to build
  -fmodules-cache-path=<directory>
                          Specify the module cache path
  -fmodules-decluse       Require declaration of modules used within a module
  -fmodules-disable-diagnostic-validation
                          Disable validation of the diagnostic options when loading the module
  -fmodules-ignore-macro=<value>
                          Ignore the definition of the given macro when building and loading modules
  -fmodules-prune-after=<seconds>
                          Specify the interval (in seconds) after which a module file will be considered unused
  -fmodules-prune-interval=<seconds>
                          Specify the interval (in seconds) between attempts to prune the module cache
  -fmodules-search-all    Search even non-imported modules to resolve references
  -fmodules-strict-decluse
                          Like -fmodules-decluse but requires all headers to be in modules
  -fmodules-ts            Enable support for the C++ Modules TS
  -fmodules-user-build-path <directory>
                          Specify the module user build path
  -fmodules-validate-input-files-content
                          Validate PCM input files based on content if mtime differs
  -fmodules-validate-once-per-build-session
                          Don't verify input files for the modules if the module has been successfully validated or loaded during this build session
  -fmodules-validate-system-headers
                          Validate the system headers that a module depends on when loading the module
  -fmodules               Enable the 'modules' language feature
  -fms-compatibility-version=<value>
                          Dot-separated value representing the Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default))
  -fms-compatibility      Enable full Microsoft Visual C++ compatibility
  -fms-extensions         Accept some non-standard constructs supported by the Microsoft compiler
  -fms-hotpatch           Ensure that all functions can be hotpatched at runtime
  -fmsc-version=<value>   Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default))
  -fnew-alignment=<align> Specifies the largest alignment guaranteed by '::operator new(size_t)'
  -fnew-infallible        Enable treating throwing global C++ operator new as always returning valid memory (annotates with __attribute__((returns_nonnull)) and throw()). This is detectable in source.
  -fno-aapcs-bitfield-width
                          Do not follow the AAPCS standard requirement stating that volatile bit-field width is dictated by the field container type. (ARM only).
  -fno-access-control     Disable C++ access control
  -fno-addrsig            Don't emit an address-significance table
  -fno-assume-sane-operator-new
                          Don't assume that C++'s global operator new can't alias any pointer
  -fno-autolink           Disable generation of linker directives for automatic library linking
  -fno-builtin-<value>    Disable implicit builtin knowledge of a specific function
  -fno-builtin            Disable implicit builtin knowledge of functions
  -fno-c++-static-destructors
                          Disable C++ static destructor registration
  -fno-char8_t            Disable C++ builtin type char8_t
  -fno-color-diagnostics  Disable colors in diagnostics
  -fno-common             Compile common globals like normal definitions
  -fno-complete-member-pointers
                          Do not require member pointer base types to be complete if they would be significant under the Microsoft ABI
  -fno-constant-cfstrings Disable creation of CodeFoundation-type constant strings
  -fno-coverage-mapping   Disable code coverage analysis
  -fno-crash-diagnostics  Disable auto-generation of preprocessed source files and a script for reproduction during a clang crash
  -fno-cuda-approx-transcendentals
                          Don't use approximate transcendental functions
  -fno-cxx-modules        Disable modules for C++
  -fno-debug-macro        Do not emit macro debug information
  -fno-declspec           Disallow __declspec as a keyword
  -fno-delayed-template-parsing
                          Disable delayed template parsing
  -fno-delete-null-pointer-checks
                          Do not treat usage of null pointers as undefined behavior
  -fno-diagnostics-fixit-info
                          Do not include fixit information in diagnostics
  -fno-digraphs           Disallow alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:'
  -fno-direct-access-external-data
                          Use GOT indirection to reference external data symbols
  -fno-discard-value-names
                          Do not discard value names in LLVM IR
  -fno-dollars-in-identifiers
                          Disallow '$' in identifiers
  -fno-double-square-bracket-attributes
                          Disable '[[]]' attributes in all C and C++ language modes
  -fno-elide-constructors Disable C++ copy constructor elision
  -fno-elide-type         Do not elide types when printing diagnostics
  -fno-eliminate-unused-debug-types
                          Emit  debug info for defined but unused types
  -fno-exceptions         Disable support for exception handling
  -fno-experimental-relative-c++-abi-vtables
                          Do not use the experimental C++ class ABI for classes with virtual tables
  -fno-fine-grained-bitfield-accesses
                          Use large-integer access for consecutive bitfield runs.
  -fno-finite-loops       Do not assume that any loop is finite.
  -fno-fixed-point        Disable fixed point types
  -fno-force-enable-int128
                          Disable support for int128_t type
  -fno-global-isel        Disables the global instruction selector
  -fno-gnu-inline-asm     Disable GNU style inline asm
  -fno-gpu-allow-device-init
                          Don't allow device side init function in HIP (experimental)
  -fno-gpu-defer-diag     Don't defer host/device related diagnostic messages for CUDA/HIP
  -fno-hip-fp32-correctly-rounded-divide-sqrt
                          Don't specify that single precision floating-point divide and sqrt used in the program source are correctly rounded (HIP device compilation only)
  -fno-hip-new-launch-api Don't use new kernel launching API for HIP
  -fno-integrated-as      Disable the integrated assembler
  -fno-integrated-cc1     Spawn a separate process for each cc1
  -fno-jump-tables        Do not use jump tables for lowering switches
  -fno-keep-static-consts Don't keep static const variables if unused
  -fno-legacy-pass-manager
                          Use the new pass manager in LLVM
  -fno-lto                Disable LTO mode (default)
  -fno-memory-profile     Disable heap memory profiling
  -fno-merge-all-constants
                          Disallow merging of constants
  -fno-new-infallible     Disable treating throwing global C++ operator new as always returning valid memory (annotates with __attribute__((returns_nonnull)) and throw()). This is detectable in source.
  -fno-objc-infer-related-result-type
                          do not infer Objective-C related result type based on method family
  -fno-offload-lto        Disable LTO mode (default) for offload compilation
  -fno-openmp-extensions  Disable all Clang extensions for OpenMP directives and clauses
  -fno-operator-names     Do not treat C++ operator name keywords as synonyms for operators
  -fno-pch-codegen        Do not generate code for uses of this PCH that assumes an explicit object file will be built for the PCH
  -fno-pch-debuginfo      Do not generate debug info for types in an object file built from this PCH and do not generate them elsewhere
  -fno-plt                Use GOT indirection instead of PLT to make external function calls (x86 only)
  -fno-preserve-as-comments
                          Do not preserve comments in inline assembly
  -fno-profile-generate   Disable generation of profile instrumentation.
  -fno-profile-instr-generate
                          Disable generation of profile instrumentation.
  -fno-profile-instr-use  Disable using instrumentation data for profile-guided optimization
  -fno-pseudo-probe-for-profiling
                          Do not emit pseudo probes for sample profiling
  -fno-register-global-dtors-with-atexit
                          Don't use atexit or __cxa_atexit to register global destructors
  -fno-rtlib-add-rpath    Do not add -rpath with architecture-specific resource directory to the linker flags
  -fno-rtti-data          Disable generation of RTTI data
  -fno-rtti               Disable generation of rtti information
  -fno-sanitize-address-outline-instrumentation
                          Use default code inlining logic for the address sanitizer
  -fno-sanitize-address-poison-custom-array-cookie
                          Disable poisoning array cookies when using custom operator new[] in AddressSanitizer
  -fno-sanitize-address-use-after-scope
                          Disable use-after-scope detection in AddressSanitizer
  -fno-sanitize-address-use-odr-indicator
                          Disable ODR indicator globals
  -fno-sanitize-cfi-canonical-jump-tables
                          Do not make the jump table addresses canonical in the symbol table
  -fno-sanitize-cfi-cross-dso
                          Disable control flow integrity (CFI) checks for cross-DSO calls.
  -fno-sanitize-coverage=<value>
                          Disable features of coverage instrumentation for Sanitizers
  -fno-sanitize-hwaddress-experimental-aliasing
                          Disable aliasing mode in HWAddressSanitizer
  -fno-sanitize-ignorelist
                          Don't use ignorelist file for sanitizers
  -fno-sanitize-memory-param-retval
                          Disable detection of uninitialized parameters and return values
  -fno-sanitize-memory-track-origins
                          Disable origins tracking in MemorySanitizer
  -fno-sanitize-memory-use-after-dtor
                          Disable use-after-destroy detection in MemorySanitizer
  -fno-sanitize-recover=<value>
                          Disable recovery for specified sanitizers
  -fno-sanitize-stats     Disable sanitizer statistics gathering.
  -fno-sanitize-thread-atomics
                          Disable atomic operations instrumentation in ThreadSanitizer
  -fno-sanitize-thread-func-entry-exit
                          Disable function entry/exit instrumentation in ThreadSanitizer
  -fno-sanitize-thread-memory-access
                          Disable memory access instrumentation in ThreadSanitizer
  -fno-sanitize-trap=<value>
                          Disable trapping for specified sanitizers
  -fno-sanitize-trap      Disable trapping for all sanitizers
  -fno-short-wchar        Force wchar_t to be an unsigned int
  -fno-show-column        Do not include column number on diagnostics
  -fno-show-source-location
                          Do not include source location information with diagnostics
  -fno-signed-char        char is unsigned
  -fno-signed-zeros       Allow optimizations that ignore the sign of floating point zeros
  -fno-spell-checking     Disable spell-checking
  -fno-split-machine-functions
                          Disable late function splitting using profile information (x86 ELF)
  -fno-split-stack        Wouldn't use segmented stack
  -fno-stack-clash-protection
                          Disable stack clash protection
  -fno-stack-protector    Disable the use of stack protectors
  -fno-standalone-debug   Limit debug information produced to reduce size of debug binary
  -fno-strict-float-cast-overflow
                          Relax language rules and try to match the behavior of the target's native float-to-int conversion instructions
  -fno-strict-return      Don't treat control flow paths that fall off the end of a non-void function as unreachable
  -fno-sycl               Disables SYCL kernels compilation for device
  -fno-temp-file          Directly create compilation output files. This may lead to incorrect incremental builds if the compiler crashes
  -fno-threadsafe-statics Do not emit code to make initialization of local statics thread safe
  -fno-trigraphs          Do not process trigraph sequences
  -fno-unique-section-names
                          Don't use unique names for text and data sections
  -fno-unroll-loops       Turn off loop unroller
  -fno-use-cxa-atexit     Don't use __cxa_atexit for calling destructors
  -fno-use-init-array     Use .ctors/.dtors instead of .init_array/.fini_array
  -fno-visibility-inlines-hidden-static-local-var
                          Disables -fvisibility-inlines-hidden-static-local-var (this is the default on non-darwin targets)
  -fno-xray-function-index
                          Omit function index section at the expense of single-function patching performance
  -fno-zero-initialized-in-bss
                          Don't place zero initialized data in BSS
  -fobjc-arc-exceptions   Use EH-safe code when synthesizing retains and releases in -fobjc-arc
  -fobjc-arc              Synthesize retain and release calls for Objective-C pointers
  -fobjc-disable-direct-methods-for-testing
                          Ignore attribute objc_direct so that direct methods can be tested
  -fobjc-encode-cxx-class-template-spec
                          Fully encode c++ class template specialization
  -fobjc-exceptions       Enable Objective-C exceptions
  -fobjc-runtime=<value>  Specify the target Objective-C runtime kind and version
  -fobjc-weak             Enable ARC-style weak references in Objective-C
  -foffload-lto=<value>   Set LTO mode to either 'full' or 'thin' for offload compilation
  -foffload-lto           Enable LTO in 'full' mode for offload compilation
  -fopenmp-extensions     Enable all Clang extensions for OpenMP directives and clauses
  -fopenmp-implicit-rpath Set rpath on OpenMP executables
  -fopenmp-new-driver     Use the new driver for OpenMP offloading.
  -fopenmp-simd           Emit OpenMP code only for SIMD-based constructs.
  -fopenmp-target-debug   Enable debugging in the OpenMP offloading device RTL
  -fopenmp-target-new-runtime
                          Use the new bitcode library for OpenMP offloading
  -fopenmp-targets=<value>
                          Specify comma-separated list of triples OpenMP offloading targets to be supported
  -fopenmp-version=<value>
                          Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50.
  -fopenmp                Parse OpenMP pragmas and generate parallel code.
  -foptimization-record-file=<file>
                          Specify the output name of the file containing the optimization remarks. Implies -fsave-optimization-record. On Darwin platforms, this cannot be used with multiple -arch <arch> options.
  -foptimization-record-passes=<regex>
                          Only include passes which match a specified regular expression in the generated optimization record (by default, include all passes)
  -forder-file-instrumentation
                          Generate instrumented code to collect order file into default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env var)
  -fpack-struct=<value>   Specify the default maximum struct packing alignment
  -fpascal-strings        Recognize and construct Pascal-style string literals
  -fpass-plugin=<dsopath> Load pass plugin from a dynamic shared object file (only with new pass manager).
  -fpatchable-function-entry=<N,M>
                          Generate M NOPs before function entry and N-M NOPs after function entry
  -fpcc-struct-return     Override the default ABI to return all structs on the stack
  -fpch-codegen           Generate code for uses of this PCH that assumes an explicit object file will be built for the PCH
  -fpch-debuginfo         Generate debug info for types in an object file built from this PCH and do not generate them elsewhere
  -fpch-instantiate-templates
                          Instantiate templates already while building a PCH
  -fpch-validate-input-files-content
                          Validate PCH input files based on content if mtime differs
  -fplugin-arg-<name>-<arg>
                          Pass <arg> to plugin <name>
  -fplugin=<dsopath>      Load the named plugin (dynamic shared object)
  -fprebuilt-implicit-modules
                          Look up implicit modules in the prebuilt module path
  -fprebuilt-module-path=<directory>
                          Specify the prebuilt module path
  -fproc-stat-report=<value>
                          Save subprocess statistics to the given file
  -fproc-stat-report<value>
                          Print subprocess statistics
  -fprofile-exclude-files=<value>
                          Instrument only functions from files where names don't match all the regexes separated by a semi-colon
  -fprofile-filter-files=<value>
                          Instrument only functions from files where names match any regex separated by a semi-colon
  -fprofile-generate=<directory>
                          Generate instrumented code to collect execution counts into <directory>/default.profraw (overridden by LLVM_PROFILE_FILE env var)
  -fprofile-generate      Generate instrumented code to collect execution counts into default.profraw (overridden by LLVM_PROFILE_FILE env var)
  -fprofile-instr-generate=<file>
                          Generate instrumented code to collect execution counts into <file> (overridden by LLVM_PROFILE_FILE env var)
  -fprofile-instr-generate
                          Generate instrumented code to collect execution counts into default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env var)
  -fprofile-instr-use=<value>
                          Use instrumentation data for profile-guided optimization
  -fprofile-list=<value>  Filename defining the list of functions/files to instrument
  -fprofile-remapping-file=<file>
                          Use the remappings described in <file> to match the profile data against names in the program
  -fprofile-sample-accurate
                          Specifies that the sample profile is accurate
  -fprofile-sample-use=<value>
                          Enable sample-based profile guided optimizations
  -fprofile-update=<method>
                          Set update method of profile counters (atomic,prefer-atomic,single)
  -fprofile-use=<pathname>
                          Use instrumentation data for profile-guided optimization. If pathname is a directory, it reads from <pathname>/default.profdata. Otherwise, it reads from file <pathname>.
  -fprotect-parens        Determines whether the optimizer honors parentheses when floating-point expressions are evaluated
  -fpseudo-probe-for-profiling
                          Emit pseudo probes for sample profiling
  -freciprocal-math       Allow division operations to be reassociated
  -freg-struct-return     Override the default ABI to return small structs in registers
  -fregister-global-dtors-with-atexit
                          Use atexit or __cxa_atexit to register global destructors
  -frelaxed-template-template-args
                          Enable C++17 relaxed template template argument matching
  -freroll-loops          Turn on loop reroller
  -fropi                  Generate read-only position independent code (ARM only)
  -frtlib-add-rpath       Add -rpath with architecture-specific resource directory to the linker flags
  -frwpi                  Generate read-write position independent code (ARM only)
  -fsanitize-address-destructor=<value>
                          Set destructor type used in ASan instrumentation
  -fsanitize-address-field-padding=<value>
                          Level of field padding for AddressSanitizer
  -fsanitize-address-globals-dead-stripping
                          Enable linker dead stripping of globals in AddressSanitizer
  -fsanitize-address-outline-instrumentation
                          Always generate function calls for address sanitizer instrumentation
  -fsanitize-address-poison-custom-array-cookie
                          Enable poisoning array cookies when using custom operator new[] in AddressSanitizer
  -fsanitize-address-use-after-return=<mode>
                          Select the mode of detecting stack use-after-return in AddressSanitizer: never | runtime (default) | always
  -fsanitize-address-use-after-scope
                          Enable use-after-scope detection in AddressSanitizer
  -fsanitize-address-use-odr-indicator
                          Enable ODR indicator globals to avoid false ODR violation reports in partially sanitized programs at the cost of an increase in binary size
  -fsanitize-blacklist=<value>
                          Alias for -fsanitize-ignorelist=
  -fsanitize-cfi-canonical-jump-tables
                          Make the jump table addresses canonical in the symbol table
  -fsanitize-cfi-cross-dso
                          Enable control flow integrity (CFI) checks for cross-DSO calls.
  -fsanitize-cfi-icall-generalize-pointers
                          Generalize pointers in CFI indirect call type signature checks
  -fsanitize-coverage-allowlist=<value>
                          Restrict sanitizer coverage instrumentation exclusively to modules and functions that match the provided special case list, except the blocked ones
  -fsanitize-coverage-blacklist=<value>
                          Deprecated, use -fsanitize-coverage-ignorelist= instead
  -fsanitize-coverage-ignorelist=<value>
                          Disable sanitizer coverage instrumentation for modules and functions that match the provided special case list, even the allowed ones
  -fsanitize-coverage-whitelist=<value>
                          Deprecated, use -fsanitize-coverage-allowlist= instead
  -fsanitize-coverage=<value>
                          Specify the type of coverage instrumentation for Sanitizers
  -fsanitize-hwaddress-abi=<value>
                          Select the HWAddressSanitizer ABI to target (interceptor or platform, default interceptor). This option is currently unused.
  -fsanitize-hwaddress-experimental-aliasing
                          Enable aliasing mode in HWAddressSanitizer
  -fsanitize-ignorelist=<value>
                          Path to ignorelist file for sanitizers
  -fsanitize-memory-param-retval
                          Enable detection of uninitialized parameters and return values
  -fsanitize-memory-track-origins=<value>
                          Enable origins tracking in MemorySanitizer
  -fsanitize-memory-track-origins
                          Enable origins tracking in MemorySanitizer
  -fsanitize-memory-use-after-dtor
                          Enable use-after-destroy detection in MemorySanitizer
  -fsanitize-recover=<value>
                          Enable recovery for specified sanitizers
  -fsanitize-stats        Enable sanitizer statistics gathering.
  -fsanitize-system-blacklist=<value>
                          Alias for -fsanitize-system-ignorelist=
  -fsanitize-system-ignorelist=<value>
                          Path to system ignorelist file for sanitizers
  -fsanitize-thread-atomics
                          Enable atomic operations instrumentation in ThreadSanitizer (default)
  -fsanitize-thread-func-entry-exit
                          Enable function entry/exit instrumentation in ThreadSanitizer (default)
  -fsanitize-thread-memory-access
                          Enable memory access instrumentation in ThreadSanitizer (default)
  -fsanitize-trap=<value> Enable trapping for specified sanitizers
  -fsanitize-trap         Enable trapping for all sanitizers
  -fsanitize-undefined-strip-path-components=<number>
                          Strip (or keep only, if negative) a given number of path components when emitting check metadata.
  -fsanitize=<check>      Turn on runtime checks for various forms of undefined or suspicious behavior. See user manual for available checks
  -fsave-optimization-record=<format>
                          Generate an optimization record file in a specific format
  -fsave-optimization-record
                          Generate a YAML optimization record file
  -fseh-exceptions        Use SEH style exceptions
  -fshort-enums           Allocate to an enum type only as many bytes as it needs for the declared range of possible values
  -fshort-wchar           Force wchar_t to be a short unsigned int
  -fshow-overloads=<value>
                          Which overload candidates to show when overload resolution fails: best|all; defaults to all
  -fshow-skipped-includes Show skipped includes in -H output.
  -fsigned-char           char is signed
  -fsized-deallocation    Enable C++14 sized global deallocation functions
  -fsjlj-exceptions       Use SjLj style exceptions
  -fslp-vectorize         Enable the superword-level parallelism vectorization passes
  -fsplit-dwarf-inlining  Provide minimal debug info in the object/executable to facilitate online symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF
  -fsplit-lto-unit        Enables splitting of the LTO unit
  -fsplit-machine-functions
                          Enable late function splitting using profile information (x86 ELF)
  -fsplit-stack           Use segmented stack
  -fstack-clash-protection
                          Enable stack clash protection
  -fstack-protector-all   Enable stack protectors for all functions
  -fstack-protector-strong
                          Enable stack protectors for some functions vulnerable to stack smashing. Compared to -fstack-protector, this uses a stronger heuristic that includes functions containing arrays of any size (and any type), as well as any calls to alloca or the taking of an address from a local variable
  -fstack-protector       Enable stack protectors for some functions vulnerable to stack smashing. This uses a loose heuristic which considers functions vulnerable if they contain a char (or 8bit integer) array or constant sized calls to alloca , which are of greater size than ssp-buffer-size (default: 8 bytes). All variable sized calls to alloca are considered vulnerable. A function with a stack protector has a guard value added to the stack frame that is checked on function exit. The guard value must be positioned in the stack frame such that a buffer overflow from a vulnerable variable will overwrite the guard value before overwriting the function's return address. The reference stack guard value is stored in a global variable.
  -fstack-size-section    Emit section containing metadata on function stack sizes
  -fstack-usage           Emit .su file containing information on function stack sizes
  -fstandalone-debug      Emit full debug info for all types used by the program
  -fstrict-enums          Enable optimizations based on the strict definition of an enum's value range
  -fstrict-float-cast-overflow
                          Assume that overflowing float-to-int casts are undefined (default)
  -fstrict-vtable-pointers
                          Enable optimizations based on the strict rules for overwriting polymorphic C++ objects
  -fswift-async-fp=<option>
                          Control emission of Swift async extended frame info (option: auto, always, never)
  -fsycl                  Enables SYCL kernels compilation for device
  -fsystem-module         Build this module as a system module. Only used with -emit-module
  -fthin-link-bitcode=<value>
                          Write minimized bitcode to <file> for the ThinLTO thin link only
  -fthinlto-index=<value> Perform ThinLTO importing using provided function summary index
  -ftime-report=<value>   (For new pass manager) "per-pass": one report for each pass; "per-pass-run": one report for each pass invocation
  -ftime-trace-granularity=<value>
                          Minimum time granularity (in microseconds) traced by time profiler
  -ftime-trace            Turn on time profiler. Generates JSON file based on output filename.
  -ftrap-function=<value> Issue call to specified function rather than a trap instruction
  -ftrapv-handler=<function name>
                          Specify the function to be called on overflow
  -ftrapv                 Trap on integer overflow
  -ftrigraphs             Process trigraph sequences
  -ftrivial-auto-var-init-stop-after=<value>
                          Stop initializing trivial automatic stack variables after the specified number of instances
  -ftrivial-auto-var-init=<value>
                          Initialize trivial automatic stack variables: uninitialized (default) | pattern
  -funique-basic-block-section-names
                          Use unique names for basic block sections (ELF Only)
  -funique-internal-linkage-names
                          Uniqueify Internal Linkage Symbol Names by appending the MD5 hash of the module path
  -funroll-loops          Turn on loop unroller
  -fuse-cuid=<value>      Method to generate ID's for compilation units for single source offloading languages CUDA and HIP: 'hash' (ID's generated by hashing file path and command line options) | 'random' (ID's generated as random numbers) | 'none' (disabled). Default is 'hash'. This option will be overridden by option '-cuid=[ID]' if it is specified.
  -fuse-line-directives   Use #line in preprocessed output
  -fvalidate-ast-input-files-content
                          Compute and store the hash of input files used to build an AST. Files with mismatching mtime's are considered valid if both contents is identical
  -fveclib=<value>        Use the given vector functions library
  -fvectorize             Enable the loop vectorization passes
  -fverbose-asm           Generate verbose assembly output
  -fvirtual-function-elimination
                          Enables dead virtual function elimination optimization. Requires -flto=full
  -fvisibility-dllexport=<value>
                          The visibility for dllexport definitions [-fvisibility-from-dllstorageclass]
  -fvisibility-externs-dllimport=<value>
                          The visibility for dllimport external declarations [-fvisibility-from-dllstorageclass]
  -fvisibility-externs-nodllstorageclass=<value>
                          The visibility for external declarations without an explicit DLL dllstorageclass [-fvisibility-from-dllstorageclass]
  -fvisibility-from-dllstorageclass
                          Set the visibility of symbols in the generated code from their DLL storage class
  -fvisibility-global-new-delete-hidden
                          Give global C++ operator new and delete declarations hidden visibility
  -fvisibility-inlines-hidden-static-local-var
                          When -fvisibility-inlines-hidden is enabled, static variables in inline C++ member functions will also be given hidden visibility by default
  -fvisibility-inlines-hidden
                          Give inline C++ member functions hidden visibility by default
  -fvisibility-ms-compat  Give global types 'default' visibility and global functions and variables 'hidden' visibility by default
  -fvisibility-nodllstorageclass=<value>
                          The visibility for defintiions without an explicit DLL export class [-fvisibility-from-dllstorageclass]
  -fvisibility=<value>    Set the default symbol visibility for all global declarations
  -fwasm-exceptions       Use WebAssembly style exceptions
  -fwhole-program-vtables Enables whole-program vtable optimization. Requires -flto
  -fwrapv                 Treat signed integer overflow as two's complement
  -fwritable-strings      Store string literals as writable data
  -fxl-pragma-pack        Enable IBM XL #pragma pack handling
  -fxray-always-emit-customevents
                          Always emit __xray_customevent(...) calls even if the containing function is not always instrumented
  -fxray-always-emit-typedevents
                          Always emit __xray_typedevent(...) calls even if the containing function is not always instrumented
  -fxray-always-instrument= <value>
                          DEPRECATED: Filename defining the whitelist for imbuing the 'always instrument' XRay attribute.
  -fxray-attr-list= <value>
                          Filename defining the list of functions/types for imbuing XRay attributes.
  -fxray-function-groups=<value>
                          Only instrument 1 of N groups
  -fxray-ignore-loops     Don't instrument functions with loops unless they also meet the minimum function size
  -fxray-instruction-threshold= <value>
                          Sets the minimum function size to instrument with XRay
  -fxray-instrumentation-bundle= <value>
                          Select which XRay instrumentation points to emit. Options: all, none, function-entry, function-exit, function, custom. Default is 'all'.  'function' includes both 'function-entry' and 'function-exit'.
  -fxray-instrument       Generate XRay instrumentation sleds on function entry and exit
  -fxray-link-deps        Tells clang to add the link dependencies for XRay.
  -fxray-modes= <value>   List of modes to link in by default into XRay instrumented binaries.
  -fxray-never-instrument= <value>
                          DEPRECATED: Filename defining the whitelist for imbuing the 'never instrument' XRay attribute.
  -fxray-selected-function-group=<value>
                          When using -fxray-function-groups, select which group of functions to instrument. Valid range is 0 to fxray-function-groups - 1
  -fzvector               Enable System z vector language extension
  -F <value>              Add directory to framework include search path
  --gcc-toolchain=<value> Search for GCC installation in the specified directory on targets which commonly use GCC. The directory usually contains 'lib{,32,64}/gcc{,-cross}/$triple' and 'include'. If specified, sysroot is skipped for GCC detection. Note: executables (e.g. ld) used by the compiler are not overridden by the selected GCC installation
  -gcodeview-ghash        Emit type record hashes in a .debug$H section
  -gcodeview              Generate CodeView debug information
  -gdwarf-2               Generate source-level debug information with dwarf version 2
  -gdwarf-3               Generate source-level debug information with dwarf version 3
  -gdwarf-4               Generate source-level debug information with dwarf version 4
  -gdwarf-5               Generate source-level debug information with dwarf version 5
  -gdwarf32               Enables DWARF32 format for ELF binaries, if debug information emission is enabled.
  -gdwarf64               Enables DWARF64 format for ELF binaries, if debug information emission is enabled.
  -gdwarf                 Generate source-level debug information with the default dwarf version
  -gembed-source          Embed source text in DWARF debug sections
  -gline-directives-only  Emit debug line info directives only
  -gline-tables-only      Emit debug line number tables only
  -gmodules               Generate debug info with external references to clang modules or precompiled headers
  -gno-embed-source       Restore the default behavior of not embedding source text in DWARF debug sections
  -gno-inline-line-tables Don't emit inline line tables.
  --gpu-bundle-output     Bundle output files of HIP device compilation
  --gpu-instrument-lib=<value>
                          Instrument device library for HIP, which is a LLVM bitcode containing __cyg_profile_func_enter and __cyg_profile_func_exit
  --gpu-max-threads-per-block=<value>
                          Default max threads per block for kernel launch bounds for HIP
  -gsplit-dwarf=<value>   Set DWARF fission mode to either 'split' or 'single'
  -gz=<value>             DWARF debug sections compression type
  -G <size>               Put objects of at most <size> bytes into small data section (MIPS / Hexagon)
  -g                      Generate source-level debug information
  --help-hidden           Display help for hidden options
  -help                   Display available options
  --hip-device-lib=<value>
                          HIP device library
  --hip-link              Link clang-offload-bundler bundles for HIP
  --hip-path=<value>      HIP runtime installation path, used for finding HIP version and adding HIP include path.
  --hip-version=<value>   HIP version in the format of major.minor.patch
  --hipspv-pass-plugin=<dsopath>
                          path to a pass plugin for HIP to SPIR-V passes.
  -H                      Show header includes and nesting depth
  -I-                     Restrict all prior -I flags to double-quoted inclusion and remove current directory from include path
  -ibuiltininc            Enable builtin #include directories even when -nostdinc is used before or after -ibuiltininc. Using -nobuiltininc after the option disables it
  -idirafter <value>      Add directory to AFTER include search path