From: Julian Ospald <hasufell@gentoo.org>
Date: Tue Jul  3 18:00:33 UTC 2012
Subject: build system

respect flags

--- CMakeLists.txt
+++ CMakeLists.txt
@@ -57,40 +57,13 @@
 
 add_cxxflag("-std=c++11")
 
-add_cxxflag("-Wall")
-add_cxxflag("-Wextra")
-add_cxxflag("-Wformat=2")
-add_cxxflag("-Wundef")
-add_cxxflag("-Wpointer-arith")
-add_cxxflag("-Wcast-qual")
-add_cxxflag("-Woverloaded-virtual")
-add_cxxflag("-Wlogical-op")
-add_cxxflag("-Wliteral-conversion")
-add_cxxflag("-Wshift-overflow")
-add_cxxflag("-Woverflow")
-add_cxxflag("-Wbool-conversions")
-add_cxxflag("-Wconversion")
-add_cxxflag("-Wsign-conversion")
-add_cxxflag("-Wmissing-declarations")
-add_cxxflag("-Wredundant-decls")
-
 if(DEBUG_EXTRA)
 	add_cxxflag("-ftrapv") # to add checks for (undefined) signed integer overflow
 	add_cxxflag("-fbounds-checking")
 	add_cxxflag("-fcatch-undefined-behavior")
 	add_cxxflag("-Wstrict-aliasing=1")
-else()
-	# -Wuninitialized causes too many false positives - thanks very much, gcc
-	add_cxxflag("-Wno-uninitialized")
-	# (clang only) Conflicts with using const variables for configuration.
-	add_cxxflag("-Wno-constant-logical-operand")
-	add_cxxflag("-Wno-unneeded-internal-declaration")
-	add_cxxflag("-Wno-unused-function")
 endif()
 
-# Because i'm lazy
-add_ldflag("-Wl,--as-needed")
-
 check_symbol_exists(isatty "unistd.h" HAVE_ISATTY)
 check_symbol_exists(ioctl "sys/ioctl.h" HAVE_IOCTL)