Stop overwriting user compiler flags.

[Neumann-A]

libilbc/CMakeLists.txt

Lines 53 to 64 in 6adb26d

	if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR
	(CMAKE_C_COMPILER_ID MATCHES "Clang" AND CMAKE_C_COMPILER_FRONTEND_VARIANT STREQUAL "GNU"))
	set(CMAKE_C_FLAGS "-Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes -Wno-unused-parameter -fno-strict-aliasing")
	set(CMAKE_C_FLAGS_DEBUG "-g")
	set(CMAKE_C_FLAGS_RELEASE "-O2")
	endif()
	if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU") OR
	(CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "GNU"))
	set(CMAKE_CXX_FLAGS "-Wall -Wextra -Wno-unused-parameter -fno-strict-aliasing")
	set(CMAKE_CXX_FLAGS_DEBUG "-g")
	set(CMAKE_CXX_FLAGS_RELEASE "-O2")
	endif()

override toolchain settings. Please stop this!
Compiler flags like these don't belong into the CMakeLists.txt you either have a toolchain, preset or simply pass those via the cmd line.