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Only make target if there is any source files

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If there is no source files, we set a blank target to signal to the
other components of the build system that they shouldn't be looking
for a library.
This commit is contained in:
Roland Kaufmann 2013-06-05 15:02:41 +02:00
parent 60eb89eb57
commit 8cb420bb7f
1 changed files with 19 additions and 12 deletions
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31
cmake/Modules/OpmCompile.cmake
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@ -14,22 +14,27 @@ macro (opm_compile opm)
set (${opm}_INCLUDE_DIR "${PROJECT_SOURCE_DIR}") set (${opm}_INCLUDE_DIR "${PROJECT_SOURCE_DIR}")
set (${opm}_INCLUDE_DIRS ${${opm}_INCLUDE_DIR} ${${opm}_INCLUDE_DIRS}) set (${opm}_INCLUDE_DIRS ${${opm}_INCLUDE_DIR} ${${opm}_INCLUDE_DIRS})
# create this library # create this library, if there are any compilation units
include_directories (${${opm}_INCLUDE_DIRS}) include_directories (${${opm}_INCLUDE_DIRS})
link_directories (${${opm}_LIBRARY_DIRS}) link_directories (${${opm}_LIBRARY_DIRS})
add_definitions (${${opm}_DEFINITIONS}) add_definitions (${${opm}_DEFINITIONS})
add_library (${${opm}_TARGET} ${${opm}_LIBRARY_TYPE} ${${opm}_SOURCES})
set (${opm}_VERSION "${${opm}_VERSION_MAJOR}.${${opm}_VERSION_MINOR}") set (${opm}_VERSION "${${opm}_VERSION_MAJOR}.${${opm}_VERSION_MINOR}")
set_target_properties (${${opm}_TARGET} PROPERTIES if (${opm}_SOURCES)
SOVERSION ${${opm}_VERSION_MAJOR} add_library (${${opm}_TARGET} ${${opm}_LIBRARY_TYPE} ${${opm}_SOURCES})
VERSION ${${opm}_VERSION} set_target_properties (${${opm}_TARGET} PROPERTIES
LINK_FLAGS "${${opm}_LINKER_FLAGS_STR}" SOVERSION ${${opm}_VERSION_MAJOR}
) VERSION ${${opm}_VERSION}
target_link_libraries (${${opm}_TARGET} ${${opm}_LIBRARIES}) LINK_FLAGS "${${opm}_LINKER_FLAGS_STR}"
)
# queue this executable to be stripped target_link_libraries (${${opm}_TARGET} ${${opm}_LIBRARIES})
strip_debug_symbols (${${opm}_TARGET} ${opm}_DEBUG)
# queue this executable to be stripped
strip_debug_symbols (${${opm}_TARGET} ${opm}_DEBUG)
else (${opm}_SOURCES)
# unset this variable to signal that no library is generated
set (${opm}_TARGET)
endif (${opm}_SOURCES)
# pre-compile common headers; this is setup *after* the library to pick # pre-compile common headers; this is setup *after* the library to pick
# up extra options set there # up extra options set there
if (PRECOMPILE_HEADERS) if (PRECOMPILE_HEADERS)
@ -49,6 +54,8 @@ macro (opm_compile opm)
endif (PRECOMPILE_HEADERS) endif (PRECOMPILE_HEADERS)
# we need to know the name of the library which is generated # we need to know the name of the library which is generated
get_target_property (${opm}_LIBRARY ${${opm}_TARGET} LOCATION) if (${opm}_TARGET)
get_target_property (${opm}_LIBRARY ${${opm}_TARGET} LOCATION)
endif (${opm}_TARGET)
endmacro (opm_compile opm) endmacro (opm_compile opm)