mewin/cppdap
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CMakeLists.txt: Make it easier to specify third_party vars.

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Only set the third_party directory variables if they're not already set
(by the dependee project).
This commit is contained in:
Ben Clayton 2019-11-18 12:22:21 +00:00 committed by Ben Clayton
parent 44d158805c
commit 010e3e3c86
2 changed files with 26 additions and 10 deletions
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26
CMakeLists.txt
View File

@ -34,17 +34,23 @@ option(CPPDAP_INSTALL "Create dap install target" OFF)
########################################################### ###########################################################
# Directories # Directories
########################################################### ###########################################################
function (set_if_not_defined name value)
if(NOT DEFINED ${name})
set(${name} ${value} PARENT_SCOPE)
endif()
endfunction()
set(CPPDAP_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src) set(CPPDAP_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
set(CPPDAP_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include) set(CPPDAP_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
set(CPPDAP_THIRD_PARTY_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party) set_if_not_defined(CPPDAP_THIRD_PARTY_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party)
set(JSON_DIR ${CPPDAP_THIRD_PARTY_DIR}/json) set_if_not_defined(CPPDAP_JSON_DIR ${CPPDAP_THIRD_PARTY_DIR}/json)
set(GOOGLETEST_DIR ${CPPDAP_THIRD_PARTY_DIR}/googletest) set_if_not_defined(CPPDAP_GOOGLETEST_DIR ${CPPDAP_THIRD_PARTY_DIR}/googletest)
########################################################### ###########################################################
# Submodules # Submodules
########################################################### ###########################################################
if(CPPDAP_BUILD_TESTS) if(CPPDAP_BUILD_TESTS)
if(NOT EXISTS ${CPPDAP_THIRD_PARTY_DIR}/googletest/.git) if(NOT EXISTS ${CPPDAP_GOOGLETEST_DIR}/.git)
message(WARNING "third_party/googletest submodule missing.") message(WARNING "third_party/googletest submodule missing.")
message(WARNING "Run: `git submodule update --init` to build tests.") message(WARNING "Run: `git submodule update --init` to build tests.")
set(CPPDAP_BUILD_TESTS OFF) set(CPPDAP_BUILD_TESTS OFF)
@ -133,7 +139,7 @@ set_target_properties(cppdap PROPERTIES
POSITION_INDEPENDENT_CODE 1 POSITION_INDEPENDENT_CODE 1
) )
target_include_directories(cppdap PRIVATE "${JSON_DIR}/include/") target_include_directories(cppdap PRIVATE "${CPPDAP_JSON_DIR}/include/")
cppdap_set_target_options(cppdap) cppdap_set_target_options(cppdap)
@ -175,14 +181,14 @@ if(CPPDAP_BUILD_TESTS)
${CPPDAP_SRC_DIR}/optional_test.cpp ${CPPDAP_SRC_DIR}/optional_test.cpp
${CPPDAP_SRC_DIR}/session_test.cpp ${CPPDAP_SRC_DIR}/session_test.cpp
${CPPDAP_SRC_DIR}/variant_test.cpp ${CPPDAP_SRC_DIR}/variant_test.cpp
${GOOGLETEST_DIR}/googletest/src/gtest-all.cc ${CPPDAP_GOOGLETEST_DIR}/googletest/src/gtest-all.cc
) )
set(DAP_TEST_INCLUDE_DIR set(DAP_TEST_INCLUDE_DIR
${GOOGLETEST_DIR}/googlemock/include/ ${CPPDAP_GOOGLETEST_DIR}/googlemock/include/
${GOOGLETEST_DIR}/googletest/ ${CPPDAP_GOOGLETEST_DIR}/googletest/
${GOOGLETEST_DIR}/googletest/include/ ${CPPDAP_GOOGLETEST_DIR}/googletest/include/
${JSON_DIR}/include/ ${CPPDAP_JSON_DIR}/include/
) )
add_executable(cppdap-unittests ${DAP_TEST_LIST}) add_executable(cppdap-unittests ${DAP_TEST_LIST})

10
README.md
View File

@ -68,6 +68,16 @@ You will also want to add the `cppdap` public headers to your project's include
target_include_directories($<target> PRIVATE "${CPPDAP_DIR}/include") # replace <target> with the name of your project's target target_include_directories($<target> PRIVATE "${CPPDAP_DIR}/include") # replace <target> with the name of your project's target
``` ```
You may also wish to specify your own paths to the third party libraries used by `cppdap`.
You can do this by setting any of the following variables before the call to `add_subdirectory()`:
```cmake
set(CPPDAP_THIRD_PARTY_DIR <third-party-root-directory>) # defaults to ${CPPDAP_DIR}/third_party
set(CPPDAP_JSON_DIR <path-to-nlohmann-json>) # defaults to ${CPPDAP_THIRD_PARTY_DIR}/json
set(CPPDAP_GOOGLETEST_DIR <path-to-googletest>) # defaults to ${CPPDAP_THIRD_PARTY_DIR}/googletest
add_subdirectory(${CPPDAP_DIR})
```
--- ---
Note: This is not an officially supported Google product Note: This is not an officially supported Google product