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cmake(bugfix):unify cmake application elf link rule

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separate three elf link modes:
kernel elf: kernel build link all user libs and startup obj
loadable elf: `m` build dont link user libs minimize size but link
startup obj
dynlib elf:do not link user libs and startup obj

Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
This commit is contained in:
xuxin19
2025-08-29 16:10:58 +08:00
committed by GUIDINGLI
parent 00e79122af
commit b34a221121
1 changed files with 23 additions and 6 deletions
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cmake/nuttx_add_application.cmake
+23 -6
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@@ -123,6 +123,15 @@ function(nuttx_add_application)
# create as standalone executable (loadable application or "module")
set(TARGET "${NAME}")
# determine the compiled elf mode
if(CONFIG_BUILD_KERNEL)
set(KERNEL_ELF_MODE True) # kernel elf will link all user libs
elseif("${MODULE}" STREQUAL "m")
set(LOADABLE_ELF_MODE True) # loadable elf only link extra libs
elseif("${DYNLIB}" STREQUAL "y")
set(DYNLIB_ELF_MODE True) # dynlib elf dont need start obj and other lib
endif()
# Use ELF capable toolchain, by building manually and overwriting the
# non-elf output
if(NOT CMAKE_C_ELF_COMPILER)
@@ -137,12 +146,20 @@ function(nuttx_add_application)
TARGET ${TARGET}
POST_BUILD
COMMAND
${CMAKE_LD}
$<IF:$<STREQUAL:"${DYNLIB}","y">,$<TARGET_PROPERTY:nuttx_global,NUTTX_MOD_APP_LINK_OPTIONS>,$<TARGET_PROPERTY:nuttx_global,NUTTX_ELF_APP_LINK_OPTIONS>>
${LINK_FLAGS} -T ${CMAKE_BINARY_DIR}/gnu-elf.ld
$<$<AND:$<TARGET_EXISTS:STARTUP_OBJS>,$<STREQUAL:"${DYNLIB}","y">>:$<TARGET_OBJECTS:STARTUP_OBJS>>
# add default link option
${CMAKE_LD} -T ${CMAKE_BINARY_DIR}/gnu-elf.ld
# add global MOD link option if dynlib link
$<$<BOOL:${DYNLIB_ELF_MODE}>:$<TARGET_PROPERTY:nuttx_global,NUTTX_MOD_APP_LINK_OPTIONS>>
# add global ELF link option if m&kernel link
$<$<OR:$<BOOL:${KERNEL_ELF_MODE}>,$<BOOL:${LOADABLE_ELF_MODE}>>:$<TARGET_PROPERTY:nuttx_global,NUTTX_ELF_APP_LINK_OPTIONS>>
# add local link option last
${LINK_FLAGS}
# link startup obj if m&kernel link
$<$<AND:$<TARGET_EXISTS:STARTUP_OBJS>,$<NOT:$<BOOL:${DYNLIB_ELF_MODE}>>>:$<TARGET_OBJECTS:STARTUP_OBJS>>
$<$<NOT:$<BOOL:${USE_LINKER}>>:-Wl,>--start-group
$<GENEX_EVAL:$<TARGET_PROPERTY:nuttx_global,NUTTX_ELF_LINK_LIBRARIES>>
# link user lib if kernel link
$<$<BOOL:${KERNEL_ELF_MODE}>:$<GENEX_EVAL:$<TARGET_PROPERTY:nuttx_global,NUTTX_ELF_LINK_LIBRARIES>>>
# always link extra libs
$<GENEX_EVAL:$<TARGET_PROPERTY:nuttx_global,NUTTX_ELF_LINK_EXTRA_LIBRARIES>>
$<$<NOT:$<BOOL:${USE_LINKER}>>:-Wl,>--whole-archive
$<TARGET_FILE:${TARGET}>
@@ -181,7 +198,7 @@ function(nuttx_add_application)
)
endif()
if("${DYNLIB}" STREQUAL "y")
if(DYNLIB_ELF_MODE)
target_compile_options(
${TARGET}
PRIVATE