I’m using object libraries to put together a project composed of numerous
modules. When putting together the static library (deliverable) at the end I
have used libtool to assemble final product. I’ve been trying to adopt the use
of OBJECT type libraries to avoid the libtool call and it mostly works with the
exception that OpenSSL and Boost static libraries are not included in the
result. This means I’ll still need libtool to add them to the archive.
1) Does this look like I’m using this correctly?
2) Can the .a files be handled by CMake in a better way than using libtool? It
is a collection of objects after all.
When this is built, other libraries will add this library in the
target_link_libraries( another_interface INTERFACE common )
### Library - objects
add_library( common_objects OBJECT
${HEADER_FILES}
${SOURCE_FILES} )
set_target_properties( common_objects PROPERTIES POSITION_INDEPENDENT_CODE on )
target_include_directories( common_objects
PUBLIC
include
iOS/include
${BOOST_INCLUDE_DIR} )
### Library - dependencies
add_library( common_interface INTERFACE )
target_link_libraries( common_interface INTERFACE prefs ${BOOST_STATIC_LIBS} )
target_include_directories( common_interface
INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/iOS/include>
$<BUILD_INTERFACE:${BOOST_INCLUDE_DIR}>
$<INSTALL_INTERFACE:include> )
### Library - interface
add_library( common INTERFACE )
target_sources( common INTERFACE $<TARGET_OBJECTS:common_objects> )
target_link_libraries( common INTERFACE common_interface )
### Library is assembled into static and shared as well
if( BUILD_STATIC_LIB )
add_library( common_static STATIC "" )
set_target_properties( common_static
PROPERTIES
OUTPUT_NAME common )
target_link_libraries( common_static PRIVATE common )
endif()
if( BUILD_SHARED_LIB )
add_library( common_shared SHARED "" )
set_target_properties( common_shared
PROPERTIES
OUTPUT_NAME common )
target_link_libraries( common_shared PRIVATE common )
endif()
--
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