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| author | Ben Pfaff <blp@nicira.com> | 2011-04-12 11:43:11 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2011-04-12 13:41:36 -0700 |
| commit | a64e37a1d3990b9c2524d166119cb5564dc5d96c (patch) | |
| tree | 4eb9f491439e0ea0466e88ea2ed373c36cf4abe0 /acinclude.m4 | |
| parent | 024405698d676c4c4906ab12e9c2fbe02b5ad902 (diff) | |
configure: Add option --enable-Werror to add -Werror to CFLAGS.
-Werror is useful for development, but it screws up configure because it's
impossible to guess what new warnings compilers will add in the future.
This commit adds a new configure option to add CFLAGS after the configure
checks are done.
The use of AC_CONFIG_COMMANDS_PRE is based on Eric Blake's suggestion on
the autoconf mailing list: "AC_CONFIG_COMMANDS_PRE probably fits the bill
as the ideal macro to use for guaranteeing that you inject your shell code
at the last possible moment."
Requested-by: Andrew Evans <aevans@nicira.com>
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index fa6f534d..69e61e0e 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -14,6 +14,17 @@ # See the License for the specific language governing permissions and # limitations under the License. +dnl OVS_ENABLE_WERROR +AC_DEFUN([OVS_ENABLE_WERROR], + [AC_ARG_ENABLE( + [Werror], + [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])], + [], [enable_Werror=no]) + AC_CONFIG_COMMANDS_PRE( + [if test "X$enable_Werror" = Xyes; then + CFLAGS="$CFLAGS -Werror" + fi])]) + dnl OVS_CHECK_LINUX26 dnl dnl Configure linux kernel source tree |