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cmake: add cflags utility macros

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This commit is contained in:
anna 2021-12-22 22:19:09 +01:00
parent 205326bccd
commit baf03e97a4
Signed by: fef
GPG key ID: EC22E476DC2D3D84
2 changed files with 27 additions and 6 deletions

20
CMakeLists.txt
View file

@ -19,6 +19,7 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
endif() endif()
include(cmake/git.cmake) include(cmake/git.cmake)
include(cmake/util.cmake)
include(cmake/config.cmake) include(cmake/config.cmake)
configure_file( configure_file(
@ -28,10 +29,17 @@ configure_file(
include("arch/${ARCH}/config/toolchain.cmake") include("arch/${ARCH}/config/toolchain.cmake")
# Used by the KASSERT macro for printing the filename relative to the source root gay_append_cmake_c_flags(
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__FILENAME__='\"$(subst ${CMAKE_SOURCE_DIR}/,,$(abspath $<))\"'") -ggdb
-pipe
-nostdinc
-ffreestanding
-fno-stack-protector
-Wused-but-marked-unused
# Used by the KASSERT macro for printing the filename relative to the source root
"-D__FILENAME__='\"$(subst ${CMAKE_SOURCE_DIR}/,,$(abspath $<))\"'"
)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pipe -nostdinc -ffreestanding -fno-stack-protector")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -pipe -D_ASM_SOURCE") set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -pipe -D_ASM_SOURCE")
if(DEBUG) if(DEBUG)
# -Og on gcc optimizes for the best debugging experience, but apparently this # -Og on gcc optimizes for the best debugging experience, but apparently this
@ -39,12 +47,12 @@ if(DEBUG)
# you're supposed to use -O0 in order to get the most submissive and debuggable # you're supposed to use -O0 in order to get the most submissive and debuggable
# code instead: # code instead:
# <https://clang.llvm.org/docs/CommandGuide/clang.html#code-generation-options> # <https://clang.llvm.org/docs/CommandGuide/clang.html#code-generation-options>
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0 -ggdb") gay_append_cmake_c_flags(-O0)
# i don't think -O0 does anything for assembly code, but it can't hurt to # i don't think -O0 does anything for assembly code, but it can't hurt to
# have it in there just in case (somebody check on this at some point plz) # have it in there just in case (somebody check on this at some point plz)
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -O0 -ggdb") gay_append_cmake_asm_flags(-O0)
else() else()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -ggdb") gay_append_cmake_c_flags(-O2)
endif() endif()
# --whole-archive ensures no (seemingly) unused symbols # --whole-archive ensures no (seemingly) unused symbols

13
cmake/util.cmake Normal file
View file

@ -0,0 +1,13 @@
# Copyright (C) 2021 fef <owo@fef.moe>. All rights reserved.
macro(gay_append_cmake_c_flags)
foreach(flag IN ITEMS ${ARGN})
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}")
endforeach()
endmacro()
macro(gay_append_cmake_asm_flags)
foreach(flag IN ITEMS ${ARGN})
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${flag}")
endforeach()
endmacro()