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| $ clang --version | |
| clang version 5.0.1 (tags/RELEASE_501/final) | |
| Target: x86_64-unknown-windows-cygnus | |
| Thread model: posix | |
| InstalledDir: /usr/bin | |
| $ clang --help-hidden | |
| OVERVIEW: clang LLVM compiler | |
| USAGE: clang-5.0 [options] <inputs> | |
| DEBUG/DEVELOPMENT OPTIONS: | |
| -ccc-install-dir <value> | |
| Simulate installation in the given directory | |
| -ccc-print-bindings Show bindings of tools to actions | |
| -ccc-print-phases Dump list of actions to perform | |
| -gen-reproducer Auto-generates preprocessed source files and a reproduction script | |
| -via-file-asm Write assembly to file for input to assemble jobs | |
| DRIVER OPTIONS: | |
| -ccc-arcmt-check Check for ARC migration issues that need manual handling | |
| -ccc-arcmt-migrate <value> | |
| Apply modifications and produces temporary files that conform to ARC | |
| -ccc-arcmt-modify Apply modifications to files to conform to ARC | |
| -ccc-gcc-name <gcc-path> | |
| Name for native GCC compiler | |
| -ccc-objcmt-migrate <value> | |
| Apply modifications and produces temporary files to migrate to modern ObjC syntax | |
| -ccc-pch-is-pch Use lazy PCH for precompiled headers | |
| -ccc-pch-is-pth Use pretokenized headers for precompiled headers | |
| --driver-mode=<value> Set the driver mode to either 'gcc', 'g++', 'cpp', or 'cl' | |
| --rsp-quoting=<value> Set the rsp quoting to either 'posix', or 'windows' | |
| OPTIONS: | |
| -### Print (but do not run) the commands to run for this compilation | |
| --analyzer-output <value> | |
| Static analyzer report output format (html|plist|plist-multi-file|plist-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 <dir> Add <dir> to search path for binaries and object files used implicitly | |
| -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-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-unsafe-math-optimizations | |
| OpenCL only. Allow unsafe floating-point optimizations. Also implies -cl-no-signed-zeros and -cl-mad-enable. | |
| --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-gpu-arch=<value> CUDA GPU architecture (e.g. sm_35). May be specified more than once. | |
| --cuda-host-only Compile CUDA code for host only. Has no effect on non-CUDA compilations. | |
| --cuda-noopt-device-debug | |
| Enable device-side debug info generation. Disables ptxas optimizations. | |
| --cuda-path=<value> CUDA installation path | |
| -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 | |
| -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted) | |
| -emit-ast Emit Clang AST files for source inputs | |
| -emit-llvm Use the LLVM representation for assembler and object files | |
| -E Only run the preprocessor | |
| -faligned-allocation Enable C++17 aligned allocation functions | |
| -fallow-editor-placeholders | |
| Treat editor placeholders as valid source code | |
| -fansi-escape-codes Use ANSI escape codes for diagnostics | |
| -fapple-kext Use Apple's kernel extensions ABI | |
| -fapple-pragma-pack Enable Apple gcc-compatible #pragma pack handling | |
| -fapplication-extension Restrict code to those available for App Extensions | |
| -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. | |
| -fclang-abi-compat=<version> | |
| Attempt to match the ABI of Clang <version> | |
| -fcolor-diagnostics Use colors in diagnostics | |
| -fcomment-block-commands=<arg> | |
| Treat each comma separated argument in <arg> as a documentation comment block command | |
| -fcoroutines-ts Enable support for the C++ Coroutines TS | |
| -fcoverage-mapping Generate coverage mapping to enable code coverage analysis | |
| -fcuda-approx-transcendentals | |
| Use approximate transcendental functions | |
| -fcuda-flush-denormals-to-zero | |
| Flush denormal floating point values to zero in CUDA device mode. | |
| -fcxx-exceptions Enable C++ exceptions | |
| -fdata-sections Place each data in its own section (ELF Only) | |
| -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-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 | |
| -fdiagnostics-absolute-paths | |
| Print absolute paths in diagnostics | |
| -fdiagnostics-hotness-threshold=<number> | |
| Prevent optimization remarks from being output if they do not have at least this profile count | |
| -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 | |
| -fdollars-in-identifiers | |
| Allow '$' in identifiers | |
| -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 | |
| -femit-all-decls Emit all declarations, even if unused | |
| -femulated-tls Use emutls functions to access thread_local variables | |
| -fexceptions Enable support for exception handling | |
| -fexperimental-new-pass-manager | |
| Enables an experimental new pass manager in LLVM. | |
| -ffast-math Allow aggressive, lossy floating-point optimizations | |
| -ffixed-r9 Reserve the r9 register (ARM only) | |
| -ffixed-x18 Reserve the x18 register (AArch64 only) | |
| -ffp-contract=<value> Form fused FP ops (e.g. FMAs): fast (everywhere) | on (according to FP_CONTRACT pragma, default) | off (never fuse) | |
| -ffreestanding Assert that the compilation takes place in a freestanding environment | |
| -ffunction-sections Place each function in its own section (ELF Only) | |
| -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 | |
| -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 | |
| -finstrument-functions Generate calls to instrument function entry and exit | |
| -fintegrated-as Enable the integrated assembler | |
| -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=<value> Set LTO mode to either 'full' or 'thin' | |
| -flto Enable LTO in 'full' mode | |
| -fmath-errno Require math functions to indicate errors by setting errno | |
| -fmax-type-align=<value> | |
| Specify the maximum alignment to enforce on pointers lacking an explicit alignment | |
| -fmodule-file=<file> Load this precompiled module file | |
| -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-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 | |
| -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)' | |
| -fno-access-control Disable C++ access control | |
| -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-common Compile common globals like normal definitions | |
| -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-debug-info-for-profiling | |
| Do not emit extra debug info for sample profiler. | |
| -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-diagnostics-fixit-info | |
| Do not include fixit information in diagnostics | |
| -fno-dollars-in-identifiers | |
| Disallow '$' in identifiers | |
| -fno-elide-constructors Disable C++ copy constructor elision | |
| -fno-elide-type Do not elide types when printing diagnostics | |
| -fno-experimental-new-pass-manager | |
| Disables an experimental new pass manager in LLVM. | |
| -fno-gnu-inline-asm Disable GNU style inline asm | |
| -fno-integrated-as Disable the integrated assembler | |
| -fno-jump-tables Do not use jump tables for lowering switches | |
| -fno-lax-vector-conversions | |
| Disallow implicit conversions between vectors with a different number of elements or different element types | |
| -fno-lto Disable LTO mode (default) | |
| -fno-merge-all-constants | |
| Disallow merging of constants | |
| -fno-objc-infer-related-result-type | |
| do not infer Objective-C related result type based on method family | |
| -fno-operator-names Do not treat C++ operator name keywords as synonyms for operators | |
| -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-reroll-loops Turn off loop reroller | |
| -fno-rtlib-add-rpath Do not add -rpath with architecture-specific resource directory to the linker flags | |
| -fno-rtti Disable generation of rtti information | |
| -fno-sanitize-address-use-after-scope | |
| Disable use-after-scope detection in AddressSanitizer | |
| -fno-sanitize-blacklist Don't use blacklist file for sanitizers | |
| -fno-sanitize-cfi-cross-dso | |
| Disable control flow integrity (CFI) checks for cross-DSO calls. | |
| -fno-sanitize-coverage=<value> | |
| Disable specified features of coverage instrumentation for Sanitizers | |
| -fno-sanitize-memory-track-origins | |
| Disable origins tracking 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-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-stack-protector Disable the use of stack protectors | |
| -fno-standalone-debug Limit debug information produced to reduce size of debug binary | |
| -fno-threadsafe-statics Do not emit code to make initialization of local statics thread safe | |
| -fno-trigraphs Do not process trigraph sequences | |
| -fno-unroll-loops Turn off loop unroller | |
| -fno-use-cxa-atexit Don't use __cxa_atexit for calling destructors | |
| -fno-use-init-array Don't use .init_array instead of .ctors | |
| -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-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 | |
| -fopenmp-targets=<value> | |
| Specify comma-separated list of triples OpenMP offloading targets to be supported | |
| -foptimization-record-file=<value> | |
| Specify the file name of any generated YAML optimization record | |
| -fpack-struct=<value> Specify the default maximum struct packing alignment | |
| -fpascal-strings Recognize and construct Pascal-style string literals | |
| -fpcc-struct-return Override the default ABI to return all structs on the stack | |
| -fplugin=<dsopath> Load the named plugin (dynamic shared object) | |
| -fprebuilt-module-path=<directory> | |
| Specify the prebuilt module path | |
| -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-sample-use=<value> | |
| Enable sample-based profile guided optimizations | |
| -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>. | |
| -freciprocal-math Allow division operations to be reassociated | |
| -freg-struct-return Override the default ABI to return small structs in registers | |
| -frelaxed-template-template-args | |
| Enable C++17 relaxed template template argument matching | |
| -freroll-loops Turn on loop reroller | |
| -frtlib-add-rpath Add -rpath with architecture-specific resource directory to the linker flags | |
| -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-use-after-scope | |
| Enable use-after-scope detection in AddressSanitizer | |
| -fsanitize-blacklist=<value> | |
| Path to blacklist file for sanitizers | |
| -fsanitize-cfi-cross-dso | |
| Enable control flow integrity (CFI) checks for cross-DSO calls. | |
| -fsanitize-coverage=<value> | |
| Specify the type of coverage instrumentation for Sanitizers | |
| -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-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-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 | |
| Generate a YAML optimization record file | |
| -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 | |
| -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 Place debug types in their own section (ELF Only) | |
| -fstack-protector-all Force the usage of stack protectors for all functions | |
| -fstack-protector-strong | |
| Use a strong heuristic to apply stack protectors to functions | |
| -fstack-protector Enable stack protectors for functions potentially vulnerable to stack smashing | |
| -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-return Always treat control flow paths that fall off the end of a non-void function as unreachable | |
| -fstrict-vtable-pointers | |
| Enable optimizations based on the strict rules for overwriting polymorphic C++ objects | |
| -fthinlto-index=<value> Perform ThinLTO importing using provided function summary index | |
| -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 | |
| -funique-section-names Use unique names for text and data sections (ELF Only) | |
| -funroll-loops Turn on loop unroller | |
| -fuse-init-array Use .init_array instead of .ctors | |
| -fveclib=<value> Use the given vector functions library | |
| -fvectorize Enable the loop vectorization passes | |
| -fvisibility-inlines-hidden | |
| Give inline C++ member functions default visibility by default | |
| -fvisibility-ms-compat Give global types 'default' visibility and global functions and variables 'hidden' visibility by default | |
| -fvisibility=<value> Set the default symbol visibility for all global declarations | |
| -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 | |
| -fxray-always-instrument= <value> | |
| Filename defining the whitelist for imbuing the 'always instrument' XRay attribute. | |
| -fxray-instruction-threshold= <value> | |
| Sets the minimum function size to instrument with XRay | |
| -fxray-instrument Generate XRay instrumentation sleds on function entry and exit | |
| -fxray-never-instrument= <value> | |
| Filename defining the whitelist for imbuing the 'never instrument' XRay attribute. | |
| -fzvector Enable System z vector language extension | |
| -F <value> Add directory to framework include search path | |
| --gcc-toolchain=<value> Use the gcc toolchain at the given directory | |
| -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 | |
| -gline-tables-only Emit debug line number tables only | |
| -gmodules Generate debug info with external references to clang modules or precompiled headers | |
| -gz=<value> DWARF debug sections compression type | |
| -gz 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 Display available options | |
| -H Show header includes and nesting depth | |
| -I- Restrict all prior -I flags to double-quoted inclusion and remove current directory from include path | |
| -idirafter <value> Add directory to AFTER include search path | |
| -iframeworkwithsysroot <directory> | |
| Add directory to SYSTEM framework search path, absolute paths are relative to -isysroot | |
| -iframework <value> Add directory to SYSTEM framework search path | |
| -imacros <file> Include macros from file before parsing | |
| -include-pch <file> Include precompiled header file | |
| -include <file> Include file before parsing | |
| -index-header-map Make the next included directory (-I or -F) an indexer header map | |
| -iprefix <dir> Set the -iwithprefix/-iwithprefixbefore prefix | |
| -iquote <directory> Add directory to QUOTE include search path | |
| -isysroot <dir> Set the system root directory (usually /) | |
| -isystem-after <directory> | |
| Add directory to end of the SYSTEM include search path | |
| -isystem <directory> Add directory to SYSTEM include search path | |
| -ivfsoverlay <value> Overlay the virtual filesystem described by file over the real file system | |
| -iwithprefixbefore <dir> | |
| Set directory to include search path with prefix | |
| -iwithprefix <dir> Set directory to SYSTEM include search path with prefix | |
| -iwithsysroot <directory> | |
| Add directory to SYSTEM include search path, absolute paths are relative to -isysroot | |
| -I <dir> Add directory to include search path | |
| -L <dir> Add directory to library search path | |
| -mabicalls Enable SVR4-style position-independent code (Mips only) | |
| -malign-double Align doubles to two words in structs (x86 only) | |
| -mamdgpu-debugger-abi=<version> | |
| Generate additional code for specified <version> of debugger ABI (AMDGPU only) | |
| -mbackchain Link stack frames through backchain on System Z | |
| -mcrc Allow use of CRC instructions (ARM only) | |
| -MD Write a depfile containing user and system headers | |
| -meabi <value> Set EABI type, e.g. 4, 5 or gnu (default depends on triple) | |
| -mexecute-only Disallow generation of data access to code sections (ARM only) | |
| -mfentry Insert calls to fentry at function entry (x86 only) | |
| -mfix-cortex-a53-835769 Workaround Cortex-A53 erratum 835769 (AArch64 only) | |
| -mfp32 Use 32-bit floating point registers (MIPS only) | |
| -mfp64 Use 64-bit floating point registers (MIPS only) | |
| -mfpxx Avoid FPU mode dependent operations when used with the O32 ABI | |
| -MF <file> Write depfile output from -MMD, -MD, -MM, or -M to <file> | |
| -mgeneral-regs-only Generate code which only uses the general purpose registers (AArch64 only) | |
| -mglobal-merge Enable merging of globals | |
| -MG Add missing headers to depfile | |
| -mhvx-double Enable Hexagon Double Vector eXtensions | |
| -mhvx Enable Hexagon Vector eXtensions | |
| -miamcu Use Intel MCU ABI | |
| --migrate Run the migrator | |
| -mincremental-linker-compatible | |
| (integrated-as) Emit an object file which can be used with an incremental linker | |
| -mios-version-min=<value> | |
| Set iOS deployment target | |
| -mips1 Equivalent to -march=mips1 | |
| -mips2 Equivalent to -march=mips2 | |
| -mips32r2 Equivalent to -march=mips32r2 | |
| -mips32r3 Equivalent to -march=mips32r3 | |
| -mips32r5 Equivalent to -march=mips32r5 | |
| -mips32r6 Equivalent to -march=mips32r6 | |
| -mips32 Equivalent to -march=mips32 | |
| -mips3 Equivalent to -march=mips3 | |
| -mips4 Equivalent to -march=mips4 | |
| -mips5 Equivalent to -march=mips5 | |
| -mips64r2 Equivalent to -march=mips64r2 | |
| -mips64r3 Equivalent to -march=mips64r3 | |
| -mips64r5 Equivalent to -march=mips64r5 | |
| -mips64r6 Equivalent to -march=mips64r6 | |
| -mips64 Equivalent to -march=mips64 | |
| -MJ <value> Write a compilation database entry per input | |
| -mllvm <value> Additional arguments to forward to LLVM's option processing | |
| -mlong-calls Generate branches with extended addressability, usually via indirect jumps. | |
| -mmacosx-version-min=<value> | |
| Set Mac OS X deployment target | |
| -mmadd4 Enable the generation of 4-operand madd.s, madd.d and related instructions. | |
| -MMD Write a depfile containing user headers | |
| -mms-bitfields Set the default structure layout to be compatible with the Microsoft compiler standard | |
| -mmsa Enable MSA ASE (MIPS only) | |
| -mmt Enable MT ASE (MIPS only) | |
| -MM Like -MMD, but also implies -E and writes to stdout by default | |
| -mno-abicalls Disable SVR4-style position-independent code (Mips only) | |
| -mno-execute-only Allow generation of data access to code sections (ARM only) | |
| -mno-fix-cortex-a53-835769 | |
| Don't workaround Cortex-A53 erratum 835769 (AArch64 only) | |
| -mno-global-merge Disable merging of globals | |
| -mno-hvx-double Disable Hexagon Double Vector eXtensions | |
| -mno-hvx Disable Hexagon Vector eXtensions | |
| -mno-implicit-float Don't generate implicit floating point instructions | |
| -mno-incremental-linker-compatible | |
| (integrated-as) Emit an object file which cannot be used with an incremental linker | |
| -mno-long-calls Restore the default behaviour of not generating long calls | |
| -mno-madd4 Disable the generation of 4-operand madd.s, madd.d and related instructions. | |
| -mno-movt Disallow use of movt/movw pairs (ARM only) | |
| -mno-ms-bitfields Do not set the default structure layout to be compatible with the Microsoft compiler standard | |
| -mno-msa Disable MSA ASE (MIPS only) | |
| -mno-mt Disable MT ASE (MIPS only) | |
| -mno-neg-immediates Disallow converting instructions with negative immediates to their negation or inversion. | |
| -mno-odd-spreg Disable odd single-precision floating point registers | |
| -mno-restrict-it Allow generation of deprecated IT blocks for ARMv8. It is off by default for ARMv8 Thumb mode | |
| -mno-unaligned-access Force all memory accesses to be aligned (AArch32/AArch64 only) | |
| -mnocrc Disallow use of CRC instructions (ARM only) | |
| -modd-spreg Enable odd single-precision floating point registers | |
| -module-dependency-dir <value> | |
| Directory to dump module dependencies to | |
| -module-file-info Provide information about a particular module file | |
| -momit-leaf-frame-pointer | |
| Omit frame pointer setup for leaf functions | |
| -mpie-copy-relocations Use copy relocations support for PIE builds | |
| -MP Create phony target for each dependency (other than main file) | |
| -mqdsp6-compat Enable hexagon-qdsp6 backward compatibility | |
| -MQ <value> Specify name of main file output to quote in depfile | |
| -mrelax-all (integrated-as) Relax all machine instructions | |
| -mrestrict-it Disallow generation of deprecated IT blocks for ARMv8. It is on by default for ARMv8 Thumb mode. | |
| -mrtd Make StdCall calling convention the default | |
| -msoft-float Use software floating point | |
| -mstack-alignment=<value> | |
| Set the stack alignment | |
| -mstack-probe-size=<value> | |
| Set the stack probe size | |
| -mstackrealign Force realign the stack at entry to every function | |
| -mstrict-align Force all memory accesses to be aligned (same as mno-unaligned-access) | |
| -mthread-model <value> The thread model to use, e.g. posix, single (posix by default) | |
| -MT <value> Specify name of main file output in depfile | |
| -munaligned-access Allow memory accesses to be unaligned (AArch32/AArch64 only) | |
| -MV Use NMake/Jom format for the depfile | |
| -M Like -MD, but also implies -E and writes to stdout by default | |
| -no-canonical-prefixes Use relative instead of canonical paths | |
| --no-cuda-gpu-arch=<value> | |
| Remove GPU architecture (e.g. sm_35) from the list of GPUs to compile for. 'all' resets the list to its default value. | |
| --no-cuda-version-check Don't error out if the detected version of the CUDA install is too low for the requested CUDA gpu architecture. | |
| --no-system-header-prefix=<prefix> | |
| Treat all #include paths starting with <prefix> as not including a system header. | |
| -nobuiltininc Disable builtin #include directories | |
| -nostdinc++ Disable standard #include directories for the C++ standard library | |
| -ObjC++ Treat source input files as Objective-C++ inputs | |
| -objcmt-atomic-property Make migration to 'atomic' properties | |
| -objcmt-migrate-all Enable migration to modern ObjC | |
| -objcmt-migrate-annotation | |
| Enable migration to property and method annotations | |
| -objcmt-migrate-designated-init | |
| Enable migration to infer NS_DESIGNATED_INITIALIZER for initializer methods | |
| -objcmt-migrate-instancetype | |
| Enable migration to infer instancetype for method result type | |
| -objcmt-migrate-literals | |
| Enable migration to modern ObjC literals | |
| -objcmt-migrate-ns-macros | |
| Enable migration to NS_ENUM/NS_OPTIONS macros | |
| -objcmt-migrate-property-dot-syntax | |
| Enable migration of setter/getter messages to property-dot syntax | |
| -objcmt-migrate-property | |
| Enable migration to modern ObjC property | |
| -objcmt-migrate-protocol-conformance | |
| Enable migration to add protocol conformance on classes | |
| -objcmt-migrate-readonly-property | |
| Enable migration to modern ObjC readonly property | |
| -objcmt-migrate-readwrite-property | |
| Enable migration to modern ObjC readwrite property | |
| -objcmt-migrate-subscripting | |
| Enable migration to modern ObjC subscripting | |
| -objcmt-ns-nonatomic-iosonly | |
| Enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's 'atomic' attribute | |
| -objcmt-returns-innerpointer-property | |
| Enable migration to annotate property with NS_RETURNS_INNER_POINTER | |
| -objcmt-whitelist-dir-path=<value> | |
| Only modify files with a filename contained in the provided directory path | |
| -ObjC Treat source input files as Objective-C inputs | |
| -o <file> Write output to <file> | |
| -pg Enable mcount instrumentation | |
| -pipe Use pipes between commands, when possible | |
| --precompile Only precompile the input | |
| -print-file-name=<file> Print the full library path of <file> | |
| -print-ivar-layout Enable Objective-C Ivar layout bitmap print trace | |
| -print-libgcc-file-name Print the library path for the currently used compiler runtime library ("libgcc.a" or "libclang_rt.builtins.*.a") | |
| -print-prog-name=<name> Print the full program path of <name> | |
| -print-resource-dir Print the resource directory pathname | |
| -print-search-dirs Print the paths used for finding libraries and programs | |
| -pthread Support POSIX threads in generated code | |
| --ptxas-path=<value> Path to ptxas (used for compiling CUDA code) | |
| -P Disable linemarker output in -E mode | |
| -Qunused-arguments Don't emit warning for unused driver arguments | |
| -relocatable-pch Whether to build a relocatable precompiled header | |
| -resource-dir <value> The directory which holds the compiler resource files | |
| -rewrite-legacy-objc Rewrite Legacy Objective-C source to C++ | |
| -rewrite-objc Rewrite Objective-C source to C++ | |
| -Rpass-analysis=<value> Report transformation analysis from optimization passes whose name matches the given POSIX regular expression | |
| -Rpass-missed=<value> Report missed transformations by optimization passes whose name matches the given POSIX regular expression | |
| -Rpass=<value> Report transformations performed by optimization passes whose name matches the given POSIX regular expression | |
| -rtlib=<value> Compiler runtime library to use | |
| -R<remark> Enable the specified remark | |
| -save-stats=<value> Save llvm statistics. | |
| -save-stats Save llvm statistics. | |
| -save-temps=<value> Save intermediate compilation results. | |
| -save-temps Save intermediate compilation results | |
| -serialize-diagnostics <value> | |
| Serialize compiler diagnostics to a file | |
| -std=<value> Language standard to compile for | |
| -stdlib=<value> C++ standard library to use | |
| --system-header-prefix=<prefix> | |
| Treat all #include paths starting with <prefix> as including a system header. | |
| -S Only run preprocess and compilation steps | |
| --target=<value> Generate code for the given target | |
| -Tbss <addr> Set starting address of BSS to <addr> | |
| -Tdata <addr> Set starting address of BSS to <addr> | |
| -time Time individual commands | |
| -traditional-cpp Enable some traditional CPP emulation | |
| -trigraphs Process trigraph sequences | |
| -Ttext <addr> Set starting address of BSS to <addr> | |
| -T <script> Specify <script> as linker script | |
| -undef undef all system defines | |
| -U <macro> Undefine macro <macro> | |
| --verify-debug-info Verify the binary representation of debug output | |
| -verify-pch Load and verify that a pre-compiled header file is not stale | |
| -v Show commands to run and use verbose output | |
| -Wa,<arg> Pass the comma separated arguments in <arg> to the assembler | |
| -Wdeprecated Enable warnings for deprecated constructs and define __DEPRECATED | |
| -Wl,<arg> Pass the comma separated arguments in <arg> to the linker | |
| -Wlarge-by-value-copy Warn if a function definition returns or accepts an object larger in bytes than a given value | |
| -working-directory <value> | |
| Resolve file paths relative to the specified directory | |
| -Wp,<arg> Pass the comma separated arguments in <arg> to the preprocessor | |
| -W<warning> Enable the specified warning | |
| -w Suppress all warnings | |
| -Xanalyzer <arg> Pass <arg> to the static analyzer | |
| -Xassembler <arg> Pass <arg> to the assembler | |
| -Xclang <arg> Pass <arg> to the clang compiler | |
| -Xcuda-fatbinary <arg> Pass <arg> to fatbinary invocation | |
| -Xcuda-ptxas <arg> Pass <arg> to the ptxas assembler | |
| -Xlinker <arg> Pass <arg> to the linker | |
| -Xpreprocessor <arg> Pass <arg> to the preprocessor | |
| -x <language> Treat subsequent input files as having type <language> | |
| -z <arg> Pass -z <arg> to the linker |
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