From 31dc69f9b907a6a6927fbed8bb5f2e197e0b821b Mon Sep 17 00:00:00 2001 From: derselbst Date: Mon, 21 Oct 2019 13:01:50 +0200 Subject: [PATCH] Turn implicit function declarations into errors --- CMakeLists.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index 08fa77de..6fbc1bf3 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -178,7 +178,7 @@ if ( CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang" OR CMAKE_C_ endif ( NOT APPLE AND NOT OS2 ) # define some warning flags - set ( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -W -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wno-unused-parameter -Wdeclaration-after-statement" ) + set ( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -W -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wno-unused-parameter -Wdeclaration-after-statement -Werror=implicit-function-declaration" ) if ( CMAKE_C_COMPILER_ID STREQUAL "Intel" ) # icc needs the restrict flag to recognize C99 restrict pointers