Improve compiler flags.

Author: Neopallium

CMakeLists.txt

@@ -13,6 +13,15 @@ if(!${LUA51_FOUND})
 endif()
 
 
+set(WARN_CFLAGS "-Wall -Wextra -Wshadow -W -pedantic -Wno-overlength-strings")
+if(CMAKE_COMPILER_IS_GNUCC)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pipe ${WARN_CFLAGS} -std=gnu99 -fgnu89-inline")
+    set(CMAKE_C_FLAGS_RELEASE        "${CMAKE_C_FLAGS_RELEASE}     -O3 -march=native -g")
+    set(CMAKE_C_FLAGS_DEBUG          "${CMAKE_C_FLAGS_DEBUG}       -O0 -g")
+    set(CMAKE_C_FLAGS_PROFILE        "${CMAKE_C_FLAGS_PROFILE}     -O2 -g -DNDEBUG")
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_WITHDEBINFO} -O2 -g")
+endif(CMAKE_COMPILER_IS_GNUCC)
+
 ## setup git submodules
 
 if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/http-parser/http_parser.c")