diff options
Diffstat (limited to 'ares/m4')
| -rw-r--r-- | ares/m4/cares-compilers.m4 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/ares/m4/cares-compilers.m4 b/ares/m4/cares-compilers.m4 index 09fdac879..d25c66491 100644 --- a/ares/m4/cares-compilers.m4 +++ b/ares/m4/cares-compilers.m4 @@ -750,9 +750,14 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [ fi dnl Set of options we believe *ALL* gcc versions support: tmp_CFLAGS="$tmp_CFLAGS -Wall -W -Winline -Wnested-externs" - tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes -Wpointer-arith" - tmp_CFLAGS="$tmp_CFLAGS -Wwrite-strings" + tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings" dnl -Wcast-align is a bit too annoying on all gcc versions ;-) + dnl Do not enable some warnings, when cross-compiling with a gcc + dnl older than 3.0, triggered on third party system headers. + if test "x$cross_compiling" != "xyes" || + test "$compiler_num" -ge "300"; then + tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes" + fi if test "$compiler_num" -ge "207"; then dnl gcc 2.7 or later tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations" @@ -790,6 +795,13 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [ if test "$compiler_num" -ge "300"; then dnl gcc 3.0 and later tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers" + else + dnl Disable some warnings, when cross-compiling with a gcc + dnl older than 3.0, triggered on third party system headers. + if test "x$cross_compiling" = "xyes"; then + tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes" + tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow" + fi fi ;; # |