From: Florian Westphal <fw@strlen.de>
Date: Sat, 29 May 2010 11:06:19 +0000 (+0200)
Subject: configure: make implicit declarations fatal
X-Git-Tag: rel-17-rc1~100
X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b849e63fbfcddae7c770944816544c4799856042;p=ngircd.git

configure: make implicit declarations fatal

from bugzilla #105:
"ngircd-16 works great under openbsd4.7/i386, but it segfaults on
openbsd4.7/amd64."

Caused by missing function prototypes and the resulting truncation of
pointer to int.

Lets try to catch these bugs during compilation instead of SIGSEGV.
---

diff --git a/configure.in b/configure.in
index 6d9312d4..8526af60 100644
--- a/configure.in
+++ b/configure.in
@@ -542,6 +542,7 @@ AC_DEFINE_UNQUOTED(TARGET_OS, "$target_os" )
 
 # Add additional CFLAGS, eventually specified on the command line, but after
 # running this configure script. Useful for "-Werror" for example.
+test "$GCC" = "yes" && CFLAGS="$CFLAGS -Werror=implicit-function-declaration"
 test -n "$CFLAGS_END" && CFLAGS="$CFLAGS $CFLAGS_END"
 
 # -- Generate files --