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cmake: extend C89-specific warning suppressions to all llvm/clang

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From Apple clang-only prior to this patch.

Silencing (seen after macos-15 runner accidentally switched to
llvm/clang by default):
```
/Users/runner/work/curl/curl/lib/curlx/warnless.h:64:1: error: '_Bool' is a C99 extension [-Werror,-Wc99-extensions]
   64 | bool curlx_sztouz(ssize_t sznum, size_t *puznum);
      | ^
/opt/homebrew/Cellar/llvm@18/18.1.8/lib/clang/18/include/stdbool.h:20:14: note: expanded from macro 'bool'
   20 | #define bool _Bool
      |              ^
[...]
```
Ref: https://github.com/curl/curl/actions/runs/23304345180/job/67774031335?pr=21014#step:11:39

Follow-up to 09c9afdd71 #20363
Ref: https://github.com/actions/runner-images/issues/13827

Closes #21015
This commit is contained in:
Viktor Szakats 2026-03-19 17:28:12 +01:00
parent a9e341a469
commit 43397b0283
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1 changed files with 5 additions and 3 deletions
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8
CMake/PickyWarnings.cmake
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@ -430,11 +430,13 @@ if(CMAKE_C_COMPILER_ID STREQUAL "Clang" AND MSVC)
endforeach()
endif()
if(CMAKE_C_STANDARD STREQUAL 90 AND CMAKE_C_COMPILER_ID STREQUAL "AppleClang")
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 4.2)
if(CMAKE_C_STANDARD STREQUAL 90 AND CMAKE_C_COMPILER_ID MATCHES "Clang")
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.0) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 4.2))
list(APPEND _picky "-Wno-c99-extensions") # Avoid: warning: '_Bool' is a C99 extension
endif()
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 8.1)
if((CMAKE_C_COMPILER_ID STREQUAL "Clang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.9) OR
(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 8.1))
list(APPEND _picky "-Wno-comma") # Just silly
endif()
endif()