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cmake_minimum_required(VERSION 2.8)
project(target_link_libraries)
file(WRITE
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
"int main() { return 0; }
"
)
add_executable(
target_link_libraries
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
)
macro(ASSERT_PROPERTY _target _property _value)
get_target_property(_out ${_target} ${_property})
if (NOT _out)
set(_out "")
endif()
if (NOT "${_out}" STREQUAL "${_value}")
message(SEND_ERROR "Target ${_target} does not have property ${_property} with value ${_value}. Actual value: ${_out}")
endif()
endmacro()
include(GenerateExportHeader)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
add_library(depA SHARED depA.cpp)
generate_export_header(depA)
add_library(depB SHARED depB.cpp)
generate_export_header(depB)
target_link_libraries(depB LINK_PRIVATE depA)
add_library(libgenex SHARED libgenex.cpp)
generate_export_header(libgenex)
set_property(TARGET depB APPEND PROPERTY
LINK_LIBRARIES $<1:libgenex>
)
add_library(depC SHARED depC.cpp)
generate_export_header(depC)
target_link_libraries(depC LINK_PUBLIC depA)
assert_property(depA LINK_INTERFACE_LIBRARIES "")
assert_property(depB LINK_INTERFACE_LIBRARIES "")
assert_property(depC LINK_INTERFACE_LIBRARIES "depA")
add_executable(targetA targetA.cpp)
target_link_libraries(targetA LINK_INTERFACE_LIBRARIES depA depB)
assert_property(targetA LINK_INTERFACE_LIBRARIES "depA;depB")
set_target_properties(targetA PROPERTIES LINK_INTERFACE_LIBRARIES "")
assert_property(targetA LINK_INTERFACE_LIBRARIES "")
add_subdirectory(subdir)
target_link_libraries(targetA subdirlib)
target_link_libraries(targetA depB depC)
assert_property(targetA LINK_INTERFACE_LIBRARIES "")
# Exclude depIfaceOnly from ALL so that it will only be built if something
# depends on it. As it is in the link interface of depB, targetA
# will depend on it. That dependency is what is being tested here.
add_library(depIfaceOnly SHARED EXCLUDE_FROM_ALL depIfaceOnly.cpp)
generate_export_header(depIfaceOnly)
set_property(TARGET depB APPEND PROPERTY LINK_INTERFACE_LIBRARIES depIfaceOnly)
add_library(depD SHARED depD.cpp)
generate_export_header(depD)
set_property(TARGET depD APPEND PROPERTY
LINK_INTERFACE_LIBRARIES
$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:depA>
)
add_executable(targetB targetB.cpp)
target_link_libraries(targetB depD)
macro(create_header _name)
file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${_name}")
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${_name}/${_name}.h" "//${_name}.h\n")
endmacro()
create_header(foo)
create_header(bar)
add_library(depG SHARED depG.cpp)
generate_export_header(depG)
target_include_directories(depG INTERFACE
"${CMAKE_CURRENT_BINARY_DIR}/foo"
"${CMAKE_CURRENT_BINARY_DIR}/bar"
)
target_compile_definitions(depG INTERFACE
TEST_DEF
)
add_executable(targetC targetC.cpp)
if(NOT BORLAND AND NOT WATCOM)
# Linking to a target containing a + should be non-fatal, though it does
# not work at all on Borland or watcom
add_library(wrapc++ empty.cpp)
target_link_libraries(targetC wrapc++)
endif()
# The TARGET_PROPERTY expression is duplicated below to test that there is no
# shortcutting of the evaluation by returning an empty string.
set(_exe_test $<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>)
target_link_libraries(targetC $<$<AND:${_exe_test},${_exe_test}>:depG>)
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