Enable optimization flags and warnings for GNU/Clang compilers and tidy up compile options.

CMakeLists.txt

@@ -30,8 +30,14 @@ target_include_directories(ikv_obj
 target_compile_features(ikv_obj PUBLIC c_std_99)
 set_target_properties(ikv_obj PROPERTIES
     POSITION_INDEPENDENT_CODE ON
-)
 
+
+# Enable optimization and extra warnings for GNU/Clang compilers
+if (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
+    add_compile_options(-O2 -Wall -Wextra -Wpedantic)
+endif()
+
+#add_compile_options
 add_library(ikv STATIC)
 add_library(ikv::ikv ALIAS ikv)
 target_sources(ikv PRIVATE $<TARGET_OBJECTS:ikv_obj>)