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annotate src/libsndfile-1.0.27/M4/add_cflags.m4 @ 40:1df64224f5ac
Current libsndfile source
| author | Chris Cannam |
|---|---|
| date | Tue, 18 Oct 2016 13:22:47 +0100 |
| parents | |
| children |
| rev | line source |
|---|---|
| Chris@40 | 1 dnl @synopsis MN_ADD_CFLAGS |
| Chris@40 | 2 dnl |
| Chris@40 | 3 dnl Add the given option to CFLAGS, if it doesn't break the compiler |
| Chris@40 | 4 |
| Chris@40 | 5 AC_DEFUN([MN_ADD_CFLAGS], |
| Chris@40 | 6 [AC_MSG_CHECKING([if $CC accepts $1]) |
| Chris@40 | 7 ac_add_cflags__old_cflags="$CFLAGS" |
| Chris@40 | 8 CFLAGS="$1" |
| Chris@40 | 9 AC_TRY_LINK([ |
| Chris@40 | 10 #include <stdio.h> |
| Chris@40 | 11 ], |
| Chris@40 | 12 [puts("Hello, World!"); return 0;], |
| Chris@40 | 13 AC_MSG_RESULT([yes]) |
| Chris@40 | 14 CFLAGS="$ac_add_cflags__old_cflags $1", |
| Chris@40 | 15 AC_MSG_RESULT([no]) |
| Chris@40 | 16 CFLAGS="$ac_add_cflags__old_cflags" |
| Chris@40 | 17 ) |
| Chris@40 | 18 ])# MN_ADD_CFLAGS |