From: Andre Noll <maan@tuebingen.mpg.de>
Date: Sun, 25 Apr 2021 22:57:12 +0000 (+0200)
Subject: build: Error out on implicit function declarations.
X-Git-Tag: v1.0.4~5^2
X-Git-Url: http://git.tuebingen.mpg.de/?p=lopsub.git;a=commitdiff_plain;h=45901057b4103eeb745e080521678c0e43e0eca1

build: Error out on implicit function declarations.

Replacing lopsub.h by an empty file builds a buggy lopsubgen-stage1
executable which segfaults due to a format string mismatch caused
by the implicit declaration of lls_version(). In this package all
functions are supposed to be declared, so let's fail the build if
any undeclared functions are found.

Tested-by: Alex Gietz <oss@mcdinner.de>
---

diff --git a/Makefile b/Makefile
index f7e19fb..548c96f 100644
--- a/Makefile
+++ b/Makefile
@@ -97,6 +97,7 @@ lopsubex_objs := lopsubex.o lopsubex.lsg.o $(liblopsub_objs)
 
 LLS_CFLAGS := -g -fPIC
 STRICT_CFLAGS := -Wall
+STRICT_CFLAGS += -Werror-implicit-function-declaration
 
 $(lsg_objs) $(liblopsub_objs) $(lopsubex_objs): %.o: %.c
 lopsubgen.o config_file.o: