diff options
| author |  Walter Gray <wgray@leapmotion.com> | 2016-06-06 10:58:50 -0700 |
|---|---|---|
| committer | Walter Gray <wgray@leapmotion.com> | 2016-06-06 12:06:55 -0700 |
| commit | 09f6a5c1d2da9fe30e2bcb63045165728efe1fa2 (patch) | |
| tree | c98c1defbb3de5c78c2754b8bae61d8f4bc9aaae /cmake/examples.cmake | |
| parent | 71556295ffe315be34ce70e1a6821860fb088f07 (diff) | |
Use ExternalProject_Add to build the examples in a stand-alone fashion.
Diffstat (limited to 'cmake/examples.cmake')
| -rw-r--r-- | cmake/examples.cmake | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/cmake/examples.cmake b/cmake/examples.cmake index f7d4d601..5a2538e4 100644 --- a/cmake/examples.cmake +++ b/cmake/examples.cmake @@ -2,9 +2,56 @@ if(protobuf_VERBOSE) message(STATUS "Protocol Buffers Examples Configuring...")
endif()
-# Add examples subproject
-add_subdirectory(../examples examples)
+get_filename_component(examples_dir "../examples" ABSOLUTE)
if(protobuf_VERBOSE)
message(STATUS "Protocol Buffers Examples Configuring done")
endif()
+include(ExternalProject)
+
+# Internal utility function: Create a custom target representing a build of examples with custom options.
+function(add_examples_build NAME)
+ ExternalProject_Add(${NAME}
+ PREFIX ${NAME}
+ SOURCE_DIR "${examples_dir}"
+ BINARY_DIR ${NAME}
+ STAMP_DIR ${NAME}/logs
+ INSTALL_COMMAND "" #Skip
+ LOG_CONFIGURE 1
+ CMAKE_CACHE_ARGS "-Dprotobuf_MSVC_STATIC_RUNTIME:BOOL=${protobuf_MSVC_STATIC_RUNTIME}"
+ "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}"
+ "-Dprotobuf_VERBOSE:BOOL=${protobuf_VERBOSE}"
+ ${ARGN}
+ )
+ set_property(TARGET ${NAME} PROPERTY FOLDER "Examples")
+ set_property(TARGET ${NAME} PROPERTY EXCLUDE_FROM_ALL TRUE)
+endfunction()
+
+# Add examples as an external project.
+# sub_directory cannot be used because the find_package(protobuf) call would cause failures with redefined targets.
+add_examples_build(examples "-Dprotobuf_DIR:PATH=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_CMAKEDIR}")
+add_dependencies(examples libprotobuf protoc)
+
+option(protobuf_BUILD_EXAMPLES_MULTITEST "Build Examples in multiple configurations. Useful for testing." OFF)
+mark_as_advanced(protobuf_BUILD_EXAMPLES_MULTITEST)
+if(protobuf_BUILD_EXAMPLES_MULTITEST)
+ set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
+ #Build using the legacy compatiblity module.
+ add_examples_build(examples-legacy
+ "-Dprotobuf_DIR:PATH=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_CMAKEDIR}"
+ "-Dprotobuf_MODULE_COMPATIBLE:BOOL=TRUE"
+ )
+ add_dependencies(examples-legacy libprotobuf protoc)
+
+ #Build using the installed library.
+ add_examples_build(examples-installed
+ "-Dprotobuf_DIR:PATH=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_CMAKEDIR}"
+ )
+
+ #Build using the installed library in legacy compatiblity mode.
+ add_examples_build(examples-installed-legacy
+ "-Dprotobuf_DIR:PATH=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_CMAKEDIR}"
+ "-Dprotobuf_MODULE_COMPATIBLE:BOOL=TRUE"
+ )
+endif()
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