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build: don't accept a broken standard lib for C++

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On the CI, we had failures such as:

    ./c++.at:401:  $PREPARSER ./list
    stderr:
    ./list: error while loading shared libraries: libc++.so.1:
            cannot open shared object file: No such file or directory

because we accepted `-std=c++ -stdlib=libc++` although libc++ is not
installed on the machine.

* m4/ax_check_compile_flag.m4 (AX_CHECK_COMPILE_FLAG): Rewrite as...
* m4/bison-check-compile-flag.m4 (BISON_CHECK_COMPILE_FLAG): this, so
that we use AC_LINK_IFELSE to check the compiler (and its std lib)
instead of AC_COMPILE_IFELSE.
This commit is contained in:
Akim Demaille
2018-09-18 07:05:01 +02:00
parent f475105c2f
commit 49dc1b5bf1
4 changed files with 70 additions and 87 deletions
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32
m4/bison-cxx-std.m4
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@@ -116,10 +116,10 @@ AC_DEFUN([BISON_CXX_COMPILE_STDCXX_11],
AC_LANG_PUSH([C++])
for f in '-std=c++11' '-std=c++11 -stdlib=libc++'
do
AX_CHECK_COMPILE_FLAG([$f],
[AC_SUBST([CXX11_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_11_testbody])
AX_CHECK_LINK_FLAG([$f],
[AC_SUBST([CXX11_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_11_testbody])
done
AC_LANG_POP([C++])
])
@@ -130,10 +130,10 @@ AC_DEFUN([BISON_CXX_COMPILE_STDCXX_14],
AC_LANG_PUSH([C++])
for f in '-std=c++14' '-std=c++14 -stdlib=libc++'
do
AX_CHECK_COMPILE_FLAG([$f],
[AC_SUBST([CXX14_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_14_testbody])
AX_CHECK_LINK_FLAG([$f],
[AC_SUBST([CXX14_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_14_testbody])
done
AC_LANG_POP([C++])
])
@@ -144,10 +144,10 @@ AC_DEFUN([BISON_CXX_COMPILE_STDCXX_17],
AC_LANG_PUSH([C++])
for f in '-std=c++17' '-std=c++17 -stdlib=libc++'
do
AX_CHECK_COMPILE_FLAG([$f],
[AC_SUBST([CXX17_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_17_testbody])
AX_CHECK_LINK_FLAG([$f],
[AC_SUBST([CXX17_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_17_testbody])
done
AC_LANG_POP([C++])
])
@@ -158,10 +158,10 @@ AC_DEFUN([BISON_CXX_COMPILE_STDCXX_2A],
AC_LANG_PUSH([C++])
for f in '-std=c++2a' '-std=c++2a -stdlib=libc++'
do
AX_CHECK_COMPILE_FLAG([$f],
[AC_SUBST([CXX2A_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_2A_testbody])
AX_CHECK_LINK_FLAG([$f],
[AC_SUBST([CXX2A_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_2A_testbody])
done
AC_LANG_POP([C++])
])