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- Dictionaryclang/klaŋ/
noun
- 1. a loud, resonant metallic sound or series of sounds: "the steel door slammed shut with a clang"
verb
- 1. make or cause to make a clang: "the bell of a fire engine clanged"
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84. The __llvm__ and __clang__ macros are the official way to check for an LLVM compiler (llvm-gcc or clang) or clang, respectively. __has_feature and __has_builtin are the recommended way of checking for optional compiler features when using clang, they are documented here. Note that you can find a list of the builtin compiler macros for gcc ...
Mar 13, 2013 · The default clang invocation is a gcc-like compiler driver, supporting the same options as gcc, including -D: return FOOBAR; return 1; So if you want to replace gcc, just invoke clang. clang -cc1 invokes the front-end component of clang, not the generic compiler driver. I am doing that already.
Jan 15, 2017 · 37. Although this is not a 100% answer to the question, but may be useful: When using clang, you can discern between 32 bit arm and 64 bit arm using: __arm__ which is defined for 32bit arm, and 32bit arm only. __aarch64__ which is defined for 64bit arm, and 64bit arm only. answered Jan 15, 2017 at 21:01.
Jul 21, 2016 · Even the GCC folks have told Clang to stop defining it because it means the GCC compiler. "The normal way to detect specifically GCC is by excluding other "compatible" compilers" - No, that's not the normal way. The normal way to detect GCC is the presence of __GNUC__. ICC has a switch to disable the behavior.
The op's pull request finally went through and as of clang version 9.0.0 is live. The functionality is enabled by the AlignConsecutiveMacros: true option. [ORIGINAL] Weirdly enough this feature is yet to be implemented in clang; the formatting option for consecutive macros is currently missing.
Aug 12, 2011 · 21. If the default compiler chosen by cmake is gcc and you have installed clang, you can use the easy way to compile your project with clang: $ mkdir build && cd build. $ CXX=clang++ CC=clang cmake .. $ make -j2. or specify the compiler for cmake: $ cmake -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang ..
Dec 31, 2020 · 4. If you want to get a complete list of warning flags, including hierarchies (IE which sub-flags are enabled by groups like -Wall), you can use the LLVM tool diagtool. $ diagtool tree Will print the complete list of warnings clang supports. $ diagtool tree -Wnon-gcc will print the warnings enabled by -Wnon-gcc. The warnings are color-coded:
Apparently, the clang bundled with Xcode doesn't respect the upstream __clang_major__ and __clang_minor__ values, and instead reports an Xcode user-facing version of some sort. Here are, for reference, the values for the various MacPorts installs of clang. They seem to respect the upstream release identifiers. I get similar values when testing ...
Nov 8, 2022 · To get a list of all the predefined macros that the compiler uses, use this: clang -dM -E -x c /dev/null. You can do the same for gcc. edited Jul 19, 2017 at 17:00. Martijn Courteaux. 68.6k 47 201 295. answered Apr 29, 2011 at 4:00.
Jan 27, 2015 · Jan 27, 2015 at 9:18. 3. All compilers that support the GNU C set of language extensions define those macros, right down to __GNUC_PATCHLEVEL__. So to detect support for a specific GNU C feature on any compiler, you check those macros. On gcc itself, they also map to the actual version of the compiler you're using, but they're best used to tell ...
