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| author | YAMAMOTO Takashi <yamamoto@valinux.co.jp> | 2015-04-17 17:14:38 +0900 |
|---|---|---|
| committer | YAMAMOTO Takashi <yamamoto@valinux.co.jp> | 2015-04-20 11:20:58 +0900 |
| commit | c2deac545b68d2de5d9a3b966bafbb1c1993b8d3 (patch) | |
| tree | 9939d7ae20c64e506850a92703f78004eee4bb53 | |
| parent | c84e499a2de8b029c651548092a46e3a1062990d (diff) | |
| download | openvswitch-c2deac545b68d2de5d9a3b966bafbb1c1993b8d3.tar.gz | |
configure: Fix -Werror build for NetBSD + clang
On NetBSD, clang (clang-3.5.0 from pkgsrc) complains
when "clang -g" is used for linking. Specify -Qunused-arguments
to suppress the warning.
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Ben Pfaff <blp@nicira.com>
| -rw-r--r-- | acinclude.m4 | 10 | ||||
| -rw-r--r-- | configure.ac | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index b09f2f258..718aa9321 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -534,8 +534,16 @@ AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl dnl clang's GCC-compatible compiler driver does not return a failure dnl exit status even though it complains about options it does not dnl understand. + dnl + dnl Also, check stderr as gcc exits with status 0 for options + dnl rejected at getopt level. + dnl % touch /tmp/a.c + dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $? + dnl gcc: unrecognized option '-Qunused-arguments' + dnl 0 + dnl % CFLAGS="$CFLAGS $WERROR $1" - AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no]) CFLAGS="$ovs_save_CFLAGS"]) if test $ovs_cv_name = yes; then m4_if([$2], [], [:], [$2]) diff --git a/configure.ac b/configure.ac index 62d26b04b..9615cb76e 100644 --- a/configure.ac +++ b/configure.ac @@ -155,6 +155,7 @@ OVS_ENABLE_OPTION([-Wmissing-prototypes]) OVS_ENABLE_OPTION([-Wmissing-field-initializers]) OVS_ENABLE_OPTION([-Wthread-safety]) OVS_ENABLE_OPTION([-fno-strict-aliasing]) +OVS_ENABLE_OPTION([-Qunused-arguments]) OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED]) OVS_CONDITIONAL_CC_OPTION([-Wno-unused-parameter], [HAVE_WNO_UNUSED_PARAMETER]) OVS_ENABLE_WERROR |