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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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2
configure.ac
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@@ -21,7 +21,7 @@
# better to avoid a typo in the 'configure --help' entry for the YACC
# environment variable.
AC_PREREQ([2.68])
m4_pattern_forbid([^_?(gl_[A-Z]|BISON_)])
m4_pattern_forbid([^_?(gl_[A-Z]|AX_|BISON_)])
m4_pattern_allow([^BISON_USE_NLS$])
AC_INIT([GNU Bison],