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[CMake] Teach CMake to build the maxsat example as an external

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project. The project can be built by building the new `c_maxsat_example`
target.
This commit is contained in:
Dan Liew 2017-06-26 11:56:28 +01:00
parent bfd1bbc136
commit 4d6cbd3788
2 changed files with 58 additions and 0 deletions
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16
examples/CMakeLists.txt
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@ -23,6 +23,22 @@ ExternalProject_Add(c_example
)
set_target_properties(c_example PROPERTIES EXCLUDE_FROM_ALL TRUE)
################################################################################
# Build maxsat example project using libz3's C API as an external project
################################################################################
ExternalProject_Add(c_maxsat_example
DEPENDS libz3
# Configure step
SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/maxsat"
CMAKE_ARGS "-DZ3_DIR=${CMAKE_BINARY_DIR}"
# Build step
${EXTERNAL_PROJECT_BUILD_ALWAYS_ARG}
BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/c_maxsat_example_build_dir"
# Install Step
INSTALL_COMMAND "${CMAKE_COMMAND}" -E echo "" # Dummy command
)
set_target_properties(c_maxsat_example PROPERTIES EXCLUDE_FROM_ALL TRUE)
################################################################################
# Build example project using libz3's C++ API as an external project

42
examples/maxsat/CMakeLists.txt Normal file
View file

@ -0,0 +1,42 @@
################################################################################
# Example maxsat project
################################################################################
# NOTE: Even though this is a C project, libz3 uses C++. When using libz3
# as a static library if we don't configure this project to also support
# C++ we will use the C linker rather than the C++ linker and will not link
# the C++ standard library in resulting in a link failure.
project(Z3_C_MAXSAT_EXAMPLE C CXX)
cmake_minimum_required(VERSION 2.8.12)
find_package(Z3
REQUIRED
CONFIG
# `NO_DEFAULT_PATH` is set so that -DZ3_DIR has to be passed to find Z3.
# This should prevent us from accidently picking up an installed
# copy of Z3. This is here to benefit Z3's build sytem when building
# this project. When making your own project you probably shouldn't
# use this option.
NO_DEFAULT_PATH
)
message(STATUS "Z3_FOUND: ${Z3_FOUND}")
message(STATUS "Found Z3 ${Z3_VERSION_STRING}")
message(STATUS "Z3_DIR: ${Z3_DIR}")
add_executable(c_maxsat_example maxsat.c)
target_include_directories(c_maxsat_example PRIVATE ${Z3_C_INCLUDE_DIRS})
target_link_libraries(c_maxsat_example PRIVATE ${Z3_LIBRARIES})
if ("${CMAKE_SYSTEM_NAME}" MATCHES "[Ww]indows")
# On Windows we need to copy the Z3 libraries
# into the same directory as the executable
# so that they can be found.
foreach (z3_lib ${Z3_LIBRARIES})
message(STATUS "Adding copy rule for ${z3_lib}")
add_custom_command(TARGET c_maxsat_example
POST_BUILD
COMMAND
${CMAKE_COMMAND} -E copy_if_different
$<TARGET_FILE:${z3_lib}>
$<TARGET_FILE_DIR:c_maxsat_example>
)
endforeach()
endif()