diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/configure.in b/configure.in index b9d2b469f59..9303dd71f03 100644 --- a/configure.in +++ b/configure.in @@ -1261,6 +1261,19 @@ then CC="$CC $NON_GCC_TEST_OPTIONS" fi +### Use -Wno-pointer-sign if the compiler supports it +AC_MSG_CHECKING([whether gcc understands -Wno-pointer-sign]) +SAVE_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Wno-pointer-sign" +AC_TRY_COMPILE([], [], has_option=yes, has_option=no,) +if test $has_option = yes; then + C_WARNINGS_SWITCH="-Wno-pointer-sign $C_WARNINGS_SWITCH" +fi +AC_MSG_RESULT($has_option) +CFLAGS="$SAVE_CFLAGS" +unset has_option +unset SAVE_CFLAGS + #### Some other nice autoconf tests. dnl checks for programs @@ -1394,6 +1407,10 @@ configure___ use_mmap_for_buffers=no #endif #endif +#ifndef C_WARNINGS_SWITCH +#define C_WARNINGS_SWITCH ${C_WARNINGS_SWITCH} +#endif + #ifndef LD_SWITCH_MACHINE #define LD_SWITCH_MACHINE #endif @@ -1422,7 +1439,7 @@ configure___ CFLAGS=C_DEBUG_SWITCH '${SPECIFIED_CFLAGS}' /* Get the CFLAGS for real compilation. */ #ifdef __GNUC__ -configure___ REAL_CFLAGS=C_DEBUG_SWITCH C_OPTIMIZE_SWITCH '${SPECIFIED_CFLAGS}' +configure___ REAL_CFLAGS=C_DEBUG_SWITCH C_OPTIMIZE_SWITCH C_WARNINGS_SWITCH '${SPECIFIED_CFLAGS}' #else configure___ REAL_CFLAGS=C_DEBUG_SWITCH '${SPECIFIED_CFLAGS}' #endif |