From 8a3fedbcb8fc58dae8b43db3cae39688ec0332ef Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Wed, 25 Jan 2017 20:51:35 +0100 Subject: o i2c test o Misc other stuff. --- cmake/stm32.toolchain.cmake | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'cmake') diff --git a/cmake/stm32.toolchain.cmake b/cmake/stm32.toolchain.cmake index 8e380fe..05a9090 100644 --- a/cmake/stm32.toolchain.cmake +++ b/cmake/stm32.toolchain.cmake @@ -22,12 +22,17 @@ set(CMAKE_SYSTEM_PROCESSOR arm) set(CMAKE_CROSSCOMPILING 1) set(TARGET_FLAGS "-mcpu=cortex-m3 -mthumb") -set(BASE_FLAGS "-O3 -ffreestanding -Wall -Wextra -g -ffunction-sections -fdata-sections ${TARGET_FLAGS}") + +set(o_level "$") +add_compile_options("$<$:-O${o_level}>$<$>:-O3>") +unset(o_level) + +set(BASE_FLAGS "-ffreestanding -Wall -Wextra -g -ffunction-sections -fdata-sections ${TARGET_FLAGS}") set(CMAKE_C_FLAGS "${BASE_FLAGS}" CACHE STRING "c flags") set(CMAKE_CXX_FLAGS "${BASE_FLAGS} -fno-exceptions -fno-rtti -felide-constructors -std=c++14" CACHE STRING "c++ flags") -set(LINKER_FLAGS "-O3 -nostdlib -Wl,--gc-sections ${TARGET_FLAGS}") +set(LINKER_FLAGS "-nostdlib -Wl,--gc-sections ${TARGET_FLAGS}") #set(LINKER_LIBS "-larm_cortexM4l_math -lm") set(CMAKE_EXE_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" FORCE) -- cgit v1.2.3