提交 7a0e772f 编写于 作者: H helinwang 提交者: GitHub

Merge pull request #2954 from helinwang/cmake_rebuild

cmake: fix problem that go_library is never rebuilt.
......@@ -290,8 +290,22 @@ function(go_library TARGET_NAME)
set(${TARGET_NAME}_LIB_NAME "${CMAKE_STATIC_LIBRARY_PREFIX}${TARGET_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}" CACHE STRING "output library name for target ${TARGET_NAME}")
endif()
# Add dummy code to support `make target_name` under Terminal Command
set(dummyfile ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME}_dummy.c)
# This custom command will always run since it depends on a not
# existing file.
add_custom_command(
OUTPUT dummy_rebulid_${TARGET_NAME}
COMMAND cmake -E touch ${dummyfile}
)
# Create a custom target that depends on the custom command output
# file, so the custom command can be referenced as a dependency by
# `add_dependencies`.
add_custom_target(rebuild_${TARGET_NAME}
DEPENDS dummy_rebulid_${TARGET_NAME}
)
# Add dummy code to support `make target_name` under Terminal Command
file(WRITE ${dummyfile} "const char * dummy = \"${dummyfile}\";")
if (go_library_SHARED OR go_library_shared)
add_library(${TARGET_NAME} SHARED ${dummyfile})
......@@ -302,6 +316,12 @@ function(go_library TARGET_NAME)
add_dependencies(${TARGET_NAME} ${go_library_DEPS})
endif(go_library_DEPS)
# The "source file" of the library is `${dummyfile}` which never
# change, so the target will never rebuild. Make the target depends
# on the custom command that touches the library "source file", so
# rebuild will always happen.
add_dependencies(${TARGET_NAME} rebuild_${TARGET_NAME})
set(${TARGET_NAME}_LIB_PATH "${CMAKE_CURRENT_BINARY_DIR}/${${TARGET_NAME}_LIB_NAME}" CACHE STRING "output library path for target ${TARGET_NAME}")
file(GLOB GO_SOURCE RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "*.go")
......
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