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build: beware of Clang++ not supporting POSIXLY_CORRECT

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* m4/c-working.m4 (BISON_LANG_COMPILER_POSIXLY_CORRECT): New.
(BISON_C_COMPILER_POSIXLY_CORRECT): Use it.
For consistency with C++, also define BISON_C_WORKS.
* m4/cxx.m4 (BISON_CXX_COMPILER_POSIXLY_CORRECT): New.
* configure.ac: Use it.
* tests/atlocal.in: Get its result.
Propagate properly CXX values when used to compile C.
When POSIXLY_CORRECT, adjust BISON_C_WORKS and BISON_CXX_WORKS.
* tests/local.at (AT_COMPILE): Use BISON_C_WORKS.
This commit is contained in:
Akim Demaille
2012-12-08 19:33:50 +01:00
parent 09a1cd5e58
commit d4728d92c7
5 changed files with 61 additions and 33 deletions
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3
configure.ac
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@@ -135,8 +135,9 @@ if test "$enable_gcc_warnings" = yes; then
fi
BISON_TEST_FOR_WORKING_C_COMPILER
BISON_TEST_FOR_WORKING_CXX_COMPILER
BISON_C_COMPILER_POSIXLY_CORRECT
BISON_TEST_FOR_WORKING_CXX_COMPILER
BISON_CXX_COMPILER_POSIXLY_CORRECT
AC_ARG_ENABLE([yacc],
[AC_HELP_STRING([--disable-yacc],