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Play nice with CMake add_subdirectory (#25)

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Enable use of `tl::expected<T, E>` purely as a library with CMake's
`add_subdirectory`. The default configuration works are before.

* `EXPECTED_ENABLE_TESTS` make building tests optional, enabled by default
* `EXPECTED_ENABLE_DOCS` make building documentation optional, enabled by default
This commit is contained in:
Kenneth Benzie
2018-06-08 11:46:44 +01:00
committed by Simon Brand
parent 72e23a137e
commit 964438dfb7
1 changed files with 34 additions and 28 deletions
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62
CMakeLists.txt
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@@ -2,40 +2,46 @@ cmake_minimum_required(VERSION 3.0)
project(expected) project(expected)
option(EXPECTED_ENABLE_TESTS "Enable tests." ON)
option(EXPECTED_ENABLE_DOCS "Enable documentation." ON)
add_library(expected INTERFACE)
target_sources(expected INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/tl/expected.hpp)
target_include_directories(expected INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/tl)
# Prepare "Catch" library for other executables # Prepare "Catch" library for other executables
set(CATCH_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/test) set(CATCH_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/test)
add_library(Catch INTERFACE) add_library(Catch INTERFACE)
target_include_directories(Catch INTERFACE ${CATCH_INCLUDE_DIR}) target_include_directories(Catch INTERFACE ${CATCH_INCLUDE_DIR})
# Make test executable if(EXPECTED_ENABLE_TESTS)
set(TEST_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/tests/main.cpp # Make test executable
${CMAKE_CURRENT_SOURCE_DIR}/tests/extensions.cpp set(TEST_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/tests/main.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/assignment.cpp ${CMAKE_CURRENT_SOURCE_DIR}/tests/extensions.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/emplace.cpp ${CMAKE_CURRENT_SOURCE_DIR}/tests/assignment.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/issues.cpp ${CMAKE_CURRENT_SOURCE_DIR}/tests/emplace.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/bases.cpp ${CMAKE_CURRENT_SOURCE_DIR}/tests/issues.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/observers.cpp ${CMAKE_CURRENT_SOURCE_DIR}/tests/bases.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/constructors.cpp) ${CMAKE_CURRENT_SOURCE_DIR}/tests/observers.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/constructors.cpp)
add_executable(tests ${TEST_SOURCES}) add_executable(tests ${TEST_SOURCES})
add_library(expected INTERFACE) target_link_libraries(tests Catch expected)
target_sources(expected INTERFACE ${CMAKE_SOURCE_DIR}/tl/expected.hpp)
target_include_directories(expected INTERFACE ${CMAKE_SOURCE_DIR}/tl)
target_link_libraries(tests Catch expected) set(CXXSTD 14 CACHE STRING "C++ standard to use, default C++14")
set_property(TARGET tests PROPERTY CXX_STANDARD ${CXXSTD})
set_property(TARGET tests PROPERTY CXX_FLAGS "-Wall -Wextra")
endif()
set(CXXSTD 14 CACHE STRING "C++ standard to use, default C++14") if(EXPECTED_ENABLE_DOCS)
set_property(TARGET tests PROPERTY CXX_STANDARD ${CXXSTD}) find_package(standardese) # find standardese after installation
set_property(TARGET tests PROPERTY CXX_FLAGS "-Wall -Wextra")
# generates a custom target that will run standardese to generate the documentation
find_package(standardese) # find standardese after installation if(standardese_FOUND)
standardese_generate(expected
# generates a custom target that will run standardese to generate the documentation INCLUDE_DIRECTORY tl
if (standardese_FOUND) CONFIG ${CMAKE_CURRENT_SOURCE_DIR}/standardese.config
standardese_generate(expected INPUT tl/expected.hpp)
INCLUDE_DIRECTORY tl endif()
CONFIG ${CMAKE_SOURCE_DIR}/standardese.config endif()
INPUT tl/expected.hpp)
endif ()