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build: rename and simplify the -std checks for C++

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Too much code duplication.

* m4/bison-cxx-std.m4: s/BISON_CXX_COMPILE_STDCXX/BISON_CXXSTD/.
(BISON_CXXSTD): New.
* configure.ac: Use it.
This commit is contained in:
Akim Demaille
2018-09-23 09:42:50 +02:00
parent 41ded58286
commit 5d0764d23b
2 changed files with 52 additions and 113 deletions
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12
configure.ac
View File

@@ -73,12 +73,12 @@ AC_CACHE_CHECK([whether pragma GCC diagnostic push works],
AC_LANG_PUSH([C++])
gl_WARN_ADD([-fno-exceptions], [NO_EXCEPTIONS_CXXFLAGS])
BISON_CXX_COMPILE_STDCXX_98
BISON_CXX_COMPILE_STDCXX_03
BISON_CXX_COMPILE_STDCXX_11
BISON_CXX_COMPILE_STDCXX_14
BISON_CXX_COMPILE_STDCXX_17
BISON_CXX_COMPILE_STDCXX_2A
BISON_CXXSTD([98])
BISON_CXXSTD([03])
BISON_CXXSTD([11])
BISON_CXXSTD([14])
BISON_CXXSTD([17])
BISON_CXXSTD([2a])
AM_CONDITIONAL([ENABLE_CXX11], [test x"$CXX11_CXXFLAGS" != x])
AC_LANG_POP([C++])

153
m4/bison-cxx-std.m4
View File

@@ -6,16 +6,16 @@
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
m4_define([_BISON_CXX_COMPILE_STDCXX_98_snippet],
m4_define([_BISON_CXXSTD_98_snippet],
[#include <vector>
typedef std::vector<int> ints;
])
m4_define([_BISON_CXX_COMPILE_STDCXX_03_snippet],
m4_define([_BISON_CXXSTD_03_snippet],
[])
m4_define([_BISON_CXX_COMPILE_STDCXX_11_snippet],
m4_define([_BISON_CXXSTD_11_snippet],
[#include <algorithm>
#include <memory>
#include <set>
@@ -65,7 +65,7 @@ m4_define([_BISON_CXX_COMPILE_STDCXX_11_snippet],
}
])
m4_define([_BISON_CXX_COMPILE_STDCXX_14_snippet],
m4_define([_BISON_CXXSTD_14_snippet],
[ // C++14
void mismatch()
{
@@ -77,7 +77,7 @@ m4_define([_BISON_CXX_COMPILE_STDCXX_14_snippet],
}
])
m4_define([_BISON_CXX_COMPILE_STDCXX_17_snippet],
m4_define([_BISON_CXXSTD_17_snippet],
[ // C++17
namespace ns1::ns2::ns3 {}
@@ -86,137 +86,76 @@ m4_define([_BISON_CXX_COMPILE_STDCXX_17_snippet],
auto out = std::ostringstream{};
])
m4_define([_BISON_CXX_COMPILE_STDCXX_2A_snippet],
m4_define([_BISON_CXXSTD_2A_snippet],
[ // C++2A
])
m4_define([_BISON_CXX_COMPILE_STDCXX_98_testbody],
m4_define([_BISON_CXXSTD_testbody(98)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXXSTD_98_snippet
])])
m4_define([_BISON_CXX_COMPILE_STDCXX_03_testbody],
m4_define([_BISON_CXXSTD_testbody(03)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXX_COMPILE_STDCXX_03_snippet
_BISON_CXXSTD_98_snippet
_BISON_CXXSTD_03_snippet
])])
m4_define([_BISON_CXX_COMPILE_STDCXX_11_testbody],
m4_define([_BISON_CXXSTD_testbody(11)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXX_COMPILE_STDCXX_03_snippet
_BISON_CXX_COMPILE_STDCXX_11_snippet
_BISON_CXXSTD_98_snippet
_BISON_CXXSTD_03_snippet
_BISON_CXXSTD_11_snippet
])])
m4_define([_BISON_CXX_COMPILE_STDCXX_14_testbody],
m4_define([_BISON_CXXSTD_testbody(14)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXX_COMPILE_STDCXX_03_snippet
_BISON_CXX_COMPILE_STDCXX_11_snippet
_BISON_CXX_COMPILE_STDCXX_14_snippet
_BISON_CXXSTD_98_snippet
_BISON_CXXSTD_03_snippet
_BISON_CXXSTD_11_snippet
_BISON_CXXSTD_14_snippet
])])
m4_define([_BISON_CXX_COMPILE_STDCXX_17_testbody],
m4_define([_BISON_CXXSTD_testbody(17)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXX_COMPILE_STDCXX_03_snippet
_BISON_CXX_COMPILE_STDCXX_11_snippet
_BISON_CXX_COMPILE_STDCXX_14_snippet
_BISON_CXX_COMPILE_STDCXX_17_snippet
_BISON_CXXSTD_98_snippet
_BISON_CXXSTD_03_snippet
_BISON_CXXSTD_11_snippet
_BISON_CXXSTD_14_snippet
_BISON_CXXSTD_17_snippet
])])
m4_define([_BISON_CXX_COMPILE_STDCXX_2A_testbody],
m4_define([_BISON_CXXSTD_testbody(2a)],
[AC_LANG_PROGRAM([
_BISON_CXX_COMPILE_STDCXX_98_snippet
_BISON_CXX_COMPILE_STDCXX_03_snippet
_BISON_CXX_COMPILE_STDCXX_11_snippet
_BISON_CXX_COMPILE_STDCXX_14_snippet
_BISON_CXX_COMPILE_STDCXX_17_snippet
_BISON_CXX_COMPILE_STDCXX_2A_snippet
_BISON_CXXSTD_98_snippet
_BISON_CXXSTD_03_snippet
_BISON_CXXSTD_11_snippet
_BISON_CXXSTD_14_snippet
_BISON_CXXSTD_17_snippet
_BISON_CXXSTD_2A_snippet
])])
m4_define([_BISON_CXXSTD_testbody],
[m4_ifdef([$0($1)],
[m4_indir([$0($1)], m4_shift2($@))],
[m4_fatal([$0: unknown C++ standard: $1])])])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_98],
# BISON_CXXSTD(STD)
# -----------------
# Check whether the C++ compiler support STD (11, 98, 2a, etc.).
# If it does, AC_SUBST 'CXX<STD>_CXXFLAGS' to the corresponding flags.
AC_DEFUN([BISON_CXXSTD],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++98' '-std=c++98 -stdlib=libc++'
for f in '-std=c++$1' '-std=c++$1 -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX98_CXXFLAGS], [$f]) break],
[AC_SUBST(m4_toupper([CXX$1_CXXFLAGS]), [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_98_testbody])
done
AC_LANG_POP([C++])
])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_03],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++03' '-std=c++03 -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX03_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_03_testbody])
done
AC_LANG_POP([C++])
])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_11],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++11' '-std=c++11 -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX11_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_11_testbody])
done
AC_LANG_POP([C++])
])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_14],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++14' '-std=c++14 -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX14_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_14_testbody])
done
AC_LANG_POP([C++])
])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_17],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++17' '-std=c++17 -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX17_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_17_testbody])
done
AC_LANG_POP([C++])
])
AC_DEFUN([BISON_CXX_COMPILE_STDCXX_2A],
[AC_REQUIRE([AC_PROG_CXX])
AC_LANG_PUSH([C++])
for f in '-std=c++2a' '-std=c++2a -stdlib=libc++'
do
BISON_CHECK_COMPILER_FLAG([$f],
[AC_SUBST([CXX2A_CXXFLAGS], [$f]) break],
[], [],
[_BISON_CXX_COMPILE_STDCXX_2A_testbody])
[_BISON_CXXSTD_testbody($1)])
done
AC_LANG_POP([C++])
])