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annotate src/libsndfile-1.0.27/M4/add_cxxflags.m4 @ 168:ceec0dd9ec9c
Replace these with versions built using an older toolset (so as to avoid ABI compatibilities when linking on Ubuntu 14.04 for packaging purposes)
| author | Chris Cannam <cannam@all-day-breakfast.com> |
|---|---|
| date | Fri, 07 Feb 2020 11:51:13 +0000 |
| parents | cd6cdf86811e |
| children |
| rev | line source |
|---|---|
| cannam@125 | 1 dnl @synopsis MN_ADD_CXXFLAGS |
| cannam@125 | 2 dnl |
| cannam@125 | 3 dnl Add the given option to CXXFLAGS, if it doesn't break the compiler |
| cannam@125 | 4 |
| cannam@125 | 5 AC_DEFUN([MN_ADD_CXXFLAGS], |
| cannam@125 | 6 [AC_MSG_CHECKING([if $CXX accepts $1]) |
| cannam@125 | 7 AC_LANG_ASSERT([C++]) |
| cannam@125 | 8 ac_add_cxxflags__old_cxxflags="$CXXFLAGS" |
| cannam@125 | 9 CXXFLAGS="$1" |
| cannam@125 | 10 AC_TRY_LINK([ |
| cannam@125 | 11 #include <cstdio> |
| cannam@125 | 12 ], |
| cannam@125 | 13 [puts("Hello, World!"); return 0;], |
| cannam@125 | 14 AC_MSG_RESULT([yes]) |
| cannam@125 | 15 CXXFLAGS="$ac_add_cxxflags__old_cxxflags $1", |
| cannam@125 | 16 AC_MSG_RESULT([no]) |
| cannam@125 | 17 CXXFLAGS="$ac_add_cxxflags__old_cxxflags" |
| cannam@125 | 18 ) |
| cannam@125 | 19 ])# MN_ADD_CXXFLAGS |