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llvm-project/libc/include/llvm-libc-macros
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bkuhls ea9f8b7746
[libc] Fix detection of cfloat128 (#185486) 
Building compiler-rt with aarch64-buildroot-linux-gnu-gcc 15.2 causes a
build error:
```
compiler-rt-22.1.0/cmake/Modules/../../libc/src/__support/CPP/type_traits/is_complex.h:44:31:
 error: 'cfloat128' was not declared in this scope; did you mean 'float128'? [-Wtemplate-body]
```
According to
https://gcc.gnu.org/onlinedocs/gcc-15.2.0/gcc/Floating-Types.html
__float128 is not available on aarch64.

Analyzing the gcc defines for aarch64 seems to prove it:
```
$ aarch64-buildroot-linux-gnu-gcc -v
Target: aarch64-buildroot-linux-gnu
gcc version 15.2.0 (Buildroot 2026.02-114-gdadec9da56)

$ echo | aarch64-buildroot-linux-gnu-gcc -dM -E - | grep __GCC_IEC_559_COMPLEX
  #define __GCC_IEC_559_COMPLEX 2

$ echo | aarch64-buildroot-linux-gnu-gcc -dM -E - | grep __STDC_IEC_60559_COMPLEX__
  #define __STDC_IEC_60559_COMPLEX__ 201404L

$ echo | aarch64-buildroot-linux-gnu-gcc -dM -E - | grep -i float128
$
```
In contrast gcc for x86_64:
```
$ x86_64-buildroot-linux-gnu-gcc -v
Target: x86_64-buildroot-linux-gnu
gcc version 15.2.0 (Buildroot 2026.02-112-gd12ac02486)

$ echo | x86_64-buildroot-linux-gnu-gcc -dM -E - | grep __GCC_IEC_559_COMPLEX
  #define __GCC_IEC_559_COMPLEX 2

$ echo | x86_64-buildroot-linux-gnu-gcc -dM -E - | grep __STDC_IEC_60559_COMPLEX__
  #define __STDC_IEC_60559_COMPLEX__ 201404L

$ echo | x86_64-buildroot-linux-gnu-gcc -dM -E - | grep -i float128
  #define __SIZEOF_FLOAT128__ 16
```
This patch changes the or-condition to an and-condition for
    \_\_STDC_IEC_60559_COMPLEX\_\_ and \_\_SIZEOF_FLOAT128\_\_.

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
2026-03-11 10:12:23 -04:00
..
baremetal
…
darwin
[libc] Add clock_gettime for Darwin (#167160)
2025-11-28 20:23:41 +05:30
gpu
[libc] add SIG_HOLD for linux/gpu (#165007)
2025-10-25 12:34:03 +08:00
linux
[libc][sys] add header and functions for sys ipc (#182700)
2026-03-03 09:48:18 -05:00
windows
…
annex-k-macros.h
[libc][annex_k] Add Annex K support macros. (#163100)
2025-10-22 21:25:27 +03:00
assert-macros.h
…
cfloat16-macros.h
[libc] Implement CMPLX related macros (#156344)
2025-09-05 10:08:04 +08:00
cfloat128-macros.h
[libc] Fix detection of cfloat128 (#185486)
2026-03-11 10:12:23 -04:00
CMakeLists.txt
[libc][sys] add header and functions for sys ipc (#182700)
2026-03-03 09:48:18 -05:00
complex-macros.h
[libc] Fix CMPLXF128 macro definition for aarch64. (#157157)
2025-09-05 16:14:07 -04:00
containerof-macro.h
…
EFIAPI-macros.h
…
elf-macros.h
[libc] Provide a minimal implementation of elf.h (#172766)
2026-01-12 10:56:49 -08:00
endian-macros.h
…
error-number-macros.h
…
fcntl-macros.h
…
features-macros.h
…
fenv-macros.h
[libc][fenv] Refactor x86 fenv implementations to make it work for various fenv_t. (#165015)
2025-12-05 16:00:10 -05:00
file-seek-macros.h
…
float16-macros.h
[libc][math] Disable float16 on Clang 11 and older (#183574)
2026-02-26 20:47:29 +02:00
float-macros.h
…
generic-error-number-macros.h
…
inttypes-macros.h
…
limits-macros.h
…
link-macros.h
[libc] Add more macro/type declarations to Elf headers. (#185348)
2026-03-09 15:12:54 -07:00
locale-macros.h
…
malloc-macros.h
…
math-function-macros.h
…
math-macros.h
[libc] Add basic support for building SPIR-V libraries (#181049)
2026-02-16 20:27:39 -06:00
netinet-in-macros.h
[libc] Add IN6_IS_ADDR_V4COMPAT (#172646)
2025-12-18 23:13:54 +08:00
nl-types-macros.h
[libc] Add macros definitions for <nl_types.h> (#164474)
2025-10-22 09:41:03 -07:00
null-macro.h
…
offsetof-macro.h
…
poll-macros.h
…
pthread-macros.h
[libc] Clean up pthread.yaml (#178327)
2026-01-28 12:30:54 -08:00
sched-macros.h
…
signal-macros.h
[libc] Add basic support for building SPIR-V libraries (#181049)
2026-02-16 20:27:39 -06:00
stdbit-macros.h
…
stdckdint-macros.h
…
stdfix-macros.h
…
stdint-macros.h
…
stdio-macros.h
…
stdlib-macros.h
…
sys-auxv-macros.h
[libc] Add more macro/type declarations to Elf headers. (#185348)
2026-03-09 15:12:54 -07:00
sys-epoll-macros.h
…
sys-ioctl-macros.h
…
sys-ipc-macros.h
[libc][sys] add header and functions for sys ipc (#182700)
2026-03-03 09:48:18 -05:00
sys-mman-macros.h
…
sys-queue-macros.h
…
sys-random-macros.h
…
sys-resource-macros.h
…
sys-select-macros.h
…
sys-socket-macros.h
…
sys-stat-macros.h
…
sys-time-macros.h
…
sys-wait-macros.h
…
sysexits-macros.h
…
termios-macros.h
…
time-macros.h
[libc] Add basic support for building SPIR-V libraries (#181049)
2026-02-16 20:27:39 -06:00
unistd-macros.h
…
wchar-macros.h
[libc] Fix WEOF and fix 1'000'000 error messages on test failure (#147928)
2025-07-11 09:35:04 +01:00