OVMS3-idf/components/newlib/CMakeLists.txt
Angus Gratton 22514c1dd9 cmake: For gcc8 use linker to find paths to libc, libm, libstdc++, etc
Removes the need to know/guess the paths to these libraries. Once we are gcc 8 only, we
can remove -nostdlib and no additional arguments are needed for system libraries.

The catch is: any time IDF overrides a symbol in the toolchain sysroot, we need
an undefined linker marker to make sure this symbol is seen by linker.
2019-05-28 12:54:37 +08:00

63 lines
2.2 KiB
CMake

set(COMPONENT_SRCS "heap.c"
"locks.c"
"poll.c"
"pthread.c"
"random.c"
"reent_init.c"
"select.c"
"syscall_table.c"
"syscalls.c"
"termios.c"
"time.c"
"utime.c")
set(COMPONENT_ADD_INCLUDEDIRS platform_include)
if(GCC_NOT_5_2_0)
if(CONFIG_SPIRAM_CACHE_WORKAROUND)
set(COMPONENT_ADD_LDFRAGMENTS esp32-spiram-rom-functions-c.lf)
endif()
# Forces the linker to include locks, heap, and syscalls from this component,
# instead of the implementations provided by newlib.
set(EXTRA_LINK_FLAGS "-u newlib_include_locks_impl")
list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_heap_impl")
list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_syscalls_impl")
list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_pthread_impl")
else()
# Remove this section when GCC 5.2.0 is no longer supported
# 'include' and 'lib' directories should also be removed.
# An if statement about LIB_PATH below should also be removed.
list(APPEND COMPONENT_ADD_INCLUDEDIRS include)
set(LIB_PATH ${CMAKE_CURRENT_SOURCE_DIR}/lib)
if(CONFIG_SPIRAM_CACHE_WORKAROUND)
set(COMPONENT_ADD_LDFRAGMENTS esp32-spiram-rom-functions-psram-workaround.lf)
endif()
endif()
set(COMPONENT_REQUIRES vfs) # for sys/ioctl.h
set(COMPONENT_PRIV_REQUIRES soc)
list(APPEND COMPONENT_ADD_LDFRAGMENTS newlib.lf)
register_component()
if (LIB_PATH)
target_link_libraries(${COMPONENT_LIB} "-L ${LIB_PATH}")
endif()
if(GCC_NOT_5_2_0)
# Toolchain libraries require code defined in this component
add_library(extra INTERFACE)
idf_component_get_property(newlib newlib COMPONENT_LIB)
target_link_libraries(extra INTERFACE ${LIBC} ${LIBM} gcc "$<TARGET_FILE:${newlib}>")
target_link_libraries(${COMPONENT_LIB} extra)
else()
target_link_libraries(${COMPONENT_LIB} ${LIBC} ${LIBM} gcc)
endif()
set_source_files_properties(heap.c PROPERTIES COMPILE_FLAGS -fno-builtin)
if(EXTRA_LINK_FLAGS)
target_link_libraries(${COMPONENT_LIB} "${EXTRA_LINK_FLAGS}")
endif()