Add ECMGenerateExportHeader, for improved handling of deprecated API

Summary:
Generates additional macros in the export header which can be used for
fine-grained disabling of warnings & visibility as well as excluding from
the build.

Reviewers: #frameworks, #build_system

Subscribers: chehrlic, dfaure, cgiboudeaux, kde-frameworks-devel, kde-buildsystem

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D23789

1 files changed, 40 insertions, 0 deletions

diff --git a/tests/ECMGenerateExportHeaderTest/library/CMakeLists.txt b/tests/ECMGenerateExportHeaderTest/library/CMakeLists.txt
new file mode 100644
index 00000000..eb925c9b
--- /dev/null
+++ b/tests/ECMGenerateExportHeaderTest/library/CMakeLists.txt
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.0.0)
+
+# keep version in sync with the one used in consumer/CMakeLists.txt for the library
+# ideally would be send over by an exported target property,
+# but exporting custom properties via EXPORT_PROPERTIES only was added in CMake 3.12
+project(library VERSION 2.40.0)
+
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../../modules)
+include(ECMGenerateExportHeader)
+
+set(_public_includedir "include/library")
+
+add_library(library library.cpp)
+target_include_directories(library
+    PUBLIC
+        "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>"
+        "$<INSTALL_INTERFACE:${_public_includedir}>"
+)
+
+if(SET_GROUP)
+    set(_group_args GROUP_BASE_NAME LIBGROUP)
+endif()
+
+ecm_generate_export_header(library
+    ${_group_args}
+    VERSION ${library_VERSION}
+    DEPRECATION_VERSIONS 2.0 2.12
+    EXCLUDE_DEPRECATED_BEFORE_AND_AT ${EXCLUDE_DEPRECATED_BEFORE_AND_AT}
+)
+
+install(TARGETS library DESTINATION lib EXPORT library_targets)
+
+install(EXPORT library_targets FILE LibraryTargets.cmake DESTINATION lib/library)
+install(FILES
+    library.hpp
+    "${CMAKE_CURRENT_BINARY_DIR}/library_export.h"
+    DESTINATION ${_public_includedir}
+)
+
+add_executable(dummy main.cpp)