Add find-package-test using examples

Author: ClausKlein

CMakeLists.txt

@@ -33,14 +33,13 @@ option(
     ${PROJECT_IS_TOP_LEVEL}
 )
 
+# includes
 include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
 
 add_library(beman_inplace_vector INTERFACE)
 # [CMAKE.LIBRARY_ALIAS]
-add_library(beman::inplace_vector ALIAS beman_inplace_vector)
-
-#XXX target_include_directories(beman.inplace_vector ... ?
+add_library(beman::beman_inplace_vector ALIAS beman_inplace_vector)
 
 target_sources(
     beman_inplace_vector
@@ -62,13 +61,14 @@ target_compile_features(
         "$<$<NOT:$<COMPILE_FEATURES:cxx_std_23>>:cxx_std_20>"
 )
 
+# export cmake config package
 block()
     # copied from execution26:
     set(TARGET_NAME beman_inplace_vector)
     set(TARGET_NAMESPACE beman)
     # set(TARGET_PREFIX ${TARGET_NAMESPACE}.${TARGET_NAME}) # FIXME: not used yet? CK
     # set(TARGET_LIBRARY ${PROJECT_NAME})
-    # set(TARGET_ALIAS ${TARGET_LIBRARY}::${TARGET_LIBRARY})
+    # set(TARGET_ALIAS ${TARGET_NAMESPACE}::${TARGET_LIBRARY})
     set(TARGET_PACKAGE_NAME ${PROJECT_NAME}-config)
     set(TARGETS_EXPORT_NAME ${PROJECT_NAME}-targets)
     set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})

cmake/Config.cmake.in

@@ -4,4 +4,4 @@
 @PACKAGE_INIT@
 
 include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
-check_required_components("@TARGET_LIBRARY@")
+check_required_components("@PROJECT_NAME@")

examples/CMakeLists.txt

@@ -1,5 +1,14 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
+cmake_minimum_required(VERSION 3.27...3.31)
+
+project(beman_inplace_vector_example LANGUAGES CXX)
+
+if(PROJECT_IS_TOP_LEVEL)
+    find_package(beman_inplace_vector 1.0.0 EXACT REQUIRED)
+    enable_testing()
+endif()
+
 set(ALL_EXAMPLES fibonacci)
 
 message(STATUS "Examples to be built: ${ALL_EXAMPLES}")
@@ -12,6 +21,12 @@ foreach(example ${ALL_EXAMPLES})
     )
     target_link_libraries(
         beman.inplace_vector.examples.${example}
-        beman::inplace_vector
+        beman::beman_inplace_vector
     )
+    if(PROJECT_IS_TOP_LEVEL)
+        add_test(
+            NAME ${example}
+            COMMAND beman.inplace_vector.examples.${example}
+        )
+    endif()
 endforeach()

tests/beman/inplace_vector/CMakeLists.txt

@@ -12,3 +12,18 @@ target_link_libraries(
 )
 
 add_test(NAME beman.inplace_vector.test COMMAND beman.inplace_vector.test)
+
+# test if the targets are findable from the build directory
+# NOTE: for an INTERFACE library, we may always use the -C Debug! CK
+add_test(
+    NAME find-package-test
+    COMMAND
+        ${CMAKE_CTEST_COMMAND} --verbose --output-on-failure -C $<CONFIG>
+        --build-and-test "${PROJECT_SOURCE_DIR}/examples"
+        "${CMAKE_CURRENT_BINARY_DIR}/find-package-test" --build-generator
+        ${CMAKE_GENERATOR} --build-makeprogram ${CMAKE_MAKE_PROGRAM}
+        --build-options "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
+        "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}"
+        "-DCMAKE_BUILD_TYPE=$<CONFIG>"
+        "-DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}"
+)