From: Maria Matejka <mq@ucw.cz>
Date: Wed, 5 Feb 2025 17:42:29 +0000 (+0100)
Subject: Make implicit function declaration an actual error
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f55e341be89189e762e499cb7be17774f5990a68;p=thirdparty%2Fbird.git

Make implicit function declaration an actual error
---

diff --git a/configure.ac b/configure.ac
index ae7b9467d..f34275ac5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,6 +147,7 @@ if test "$bird_cflags_default" = yes ; then
   BIRD_CHECK_GCC_OPTION([bird_cv_c_option_wno_pointer_sign], [-Wno-pointer-sign], [-Wall])
   BIRD_CHECK_GCC_OPTION([bird_cv_c_option_wno_missing_init], [-Wno-missing-field-initializers], [-Wall -Wextra])
   BIRD_CHECK_GCC_OPTION([bird_cv_c_option_watomic_implicit_seq_cst], [-Watomic-implicit-seq-cst], [-Wall -Wextra])
+  BIRD_CHECK_GCC_OPTION([bird_cv_c_option_werror_implicit_function_declaration], [-Werror=implicit-function-declaration], [-Wall -Wextra])
 
   if test "$enable_debug" = no; then
     BIRD_CHECK_LTO
@@ -163,6 +164,7 @@ if test "$bird_cflags_default" = yes ; then
   BIRD_ADD_GCC_OPTION([bird_cv_c_option_wno_pointer_sign], [-Wno-pointer-sign])
   BIRD_ADD_GCC_OPTION([bird_cv_c_option_wno_missing_init], [-Wno-missing-field-initializers])
   BIRD_ADD_GCC_OPTION([bird_cv_c_option_watomic_implicit_seq_cst], [-Watomic-implicit-seq-cst])
+  BIRD_ADD_GCC_OPTION([bird_cv_c_option_werror_implicit_function_declaration], [-Werror=implicit-function-declaration])
 fi