Fix maintainer mode with GCC/Clang.

Setting -Wstrict-prototypes in combination
with -Werror leads to compiler errors during
configure checks (autoconf generates incomplete
prototypes).

Adding -Wno-error=strict-prototypes lets the
compiler tolerate those.

Possible future enhancement: remember such
"configure time only" flags and remove them
from CFLAGS before generating our build time
files (Makefile, config_vars.mk etc.), so that
the full -Werror is in place during building.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1812263 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/configure.in b/configure.in
index ef7bd02482437dac20063621cd82e17c53dd9b86..2f328cc2a8ca2052277f376105e3ccb2b9011213 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -630,6 +630,10 @@ AC_ARG_ENABLE(maintainer-mode,APACHE_HELP_STRING(--enable-maintainer-mode,Turn o
     APR_ADDTO(CPPFLAGS, -DAP_DEBUG)
     if test "$GCC" = "yes"; then
       APR_ADDTO(CFLAGS,[-Wall -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations -Wpointer-arith])
+      # Next flag needed, because -Wstrict-prototypes in combination with
+      # -Werror leads to compiler errors during configure checks (autoconf
+      # generates incomplete prototypes).
+      APACHE_ADD_GCC_CFLAG([-Wno-error=strict-prototypes])
       APACHE_ADD_GCC_CFLAG([-std=c89])
       APACHE_ADD_GCC_CFLAG([-Werror])
       APACHE_ADD_GCC_CFLAG([-Wdeclaration-after-statement])