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gh-96398: Improve accuracy of compiler checks in configure.ac #117815

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Merged
erlend-aasland merged 20 commits into from
Nov 7, 2024
Merged

gh-96398: Improve accuracy of compiler checks in configure.ac #117815

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4a55006
gh-96398: Consistently use $ac_cv_cc_name for compiler checks in conf…
erlend-aasland Apr 12, 2024
3e03fe4
Bring back the mpicc
erlend-aasland Apr 12, 2024
2305a7b
Detect emcc
erlend-aasland Apr 12, 2024
444b92d
Pull in main
erlend-aasland Apr 12, 2024
1077ec3
gh-96398: Detect GCC compatible compilers in configure
erlend-aasland Apr 12, 2024
aeed46f
Use ac_cv_gcc_compat where possible
erlend-aasland Apr 12, 2024
cc3731f
Pull in main
erlend-aasland Apr 12, 2024
a614de5
syntax
erlend-aasland Apr 12, 2024
c55d838
;;
erlend-aasland Apr 12, 2024
b249323
regen ac
erlend-aasland Apr 12, 2024
00cb06c
Merge branch 'main' into autoconf/cc
erlend-aasland Apr 13, 2024
474d5f9
Merge branch 'main' into autoconf/cc
erlend-aasland Apr 13, 2024
f327791
gh-96398: Fix mpicc check in configure.ac
erlend-aasland Apr 13, 2024
c6e50b9
Bring back CC_BASENAME and use it for tool detection
erlend-aasland Apr 13, 2024
f33f1f5
Use CC_BASENAME to simplify mpicc check
erlend-aasland Apr 13, 2024
033e017
Pull in main
erlend-aasland Apr 13, 2024
0df909e
Pull in main
erlend-aasland Oct 14, 2024
d309996
Merge branch 'main' into autoconf/cc
erlend-aasland Oct 27, 2024
c6fa062
Pull in main
erlend-aasland Oct 28, 2024
9900633
Address Malcom's review
erlend-aasland Oct 28, 2024
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gh-96398: Detect GCC compatible compilers in configure 
Introduce a cached variable $ac_cv_gcc_compat and set it to 'yes' if
the C preprocessor defines the __GNUC__ macro.
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erlend-aasland committed Apr 12, 2024
commit 1077ec316c9cf8fc9032f72fc8c317239073c203
29 changes: 28 additions & 1 deletion configure
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12 changes: 12 additions & 0 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -1025,6 +1025,18 @@ rm -f conftest.c conftest.out
# _POSIX_SOURCE, _POSIX_1_SOURCE, and more
AC_USE_SYSTEM_EXTENSIONS

AC_CACHE_CHECK([for GCC compatible compiler],
[ac_cv_gcc_compat],
[AC_PREPROC_IFELSE([AC_LANG_SOURCE([
#if !defined(__GNUC__)
#error "not GCC compatible"
#else
/* GCC compatible! */
#endif
], [])],
[ac_cv_gcc_compat=yes],
[ac_cv_gcc_compat=no])])

AC_SUBST([CXX])

preset_cxx="$CXX"
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