CPack: CMAKE_PROJECT_HOMEPAGE_URL -> CPACK_PACKAGE_HOMEPAGE_URL

At CPack running time the `CMAKE_PROJECT_HOMEPAGE_URL` variable
is not set.

Internal CPack modules (e.g. CPackDEB, CPackRPM, CPackFreeBSD)
should use `CPACK_PACKAGE_HOMEPAGE_URL` instead, which is available
after inclusion of `CPack.cmake` into `CMakeLists.txt`.

Closes: #19607

5 files changed, 53 insertions, 0 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 0a090a8..1e485c4 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -553,6 +553,7 @@ set(cpack_tests
   DEB.MD5SUMS
   DEB.DEB_PACKAGE_VERSION_BACK_COMPATIBILITY
   DEB.DEB_DESCRIPTION
+  DEB.PROJECT_META
 
   RPM.CUSTOM_BINARY_SPEC_FILE
   RPM.CUSTOM_NAMES
@@ -573,6 +574,7 @@ set(cpack_tests
   RPM.SUGGESTS
   RPM.SYMLINKS
   RPM.USER_FILELIST
+  RPM.PROJECT_META
 
   7Z
   TBZ2
diff --git a/Tests/RunCMake/CPack/RunCMakeTest.cmake b/Tests/RunCMake/CPack/RunCMakeTest.cmake
index b0b7a99..5fce32a 100644
--- a/Tests/RunCMake/CPack/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CPack/RunCMakeTest.cmake
@@ -46,3 +46,4 @@ run_cpack_test_subtests(
   false
   "MONOLITHIC;COMPONENT"
 )
+run_cpack_test(PROJECT_META "RPM.PROJECT_META;DEB.PROJECT_META" false "MONOLITHIC;COMPONENT")
diff --git a/Tests/RunCMake/CPack/tests/PROJECT_META/ExpectedFiles.cmake b/Tests/RunCMake/CPack/tests/PROJECT_META/ExpectedFiles.cmake
new file mode 100644
index 0000000..448ed2b
--- /dev/null
+++ b/Tests/RunCMake/CPack/tests/PROJECT_META/ExpectedFiles.cmake
@@ -0,0 +1,9 @@
+if(GENERATOR_TYPE STREQUAL DEB)
+  set(EXPECTED_FILE_1 "project_meta-1.2.3*.deb")
+elseif(GENERATOR_TYPE STREQUAL RPM)
+  set(EXPECTED_FILE_1 "project_meta-1.2.3*.rpm")
+else()
+  message(FATAL_ERROR "Unexpected CPack generator")
+endif()
+set(EXPECTED_FILES_COUNT "1")
+set(EXPECTED_FILE_CONTENT_1_LIST "/foo;/foo/CMakeLists.txt")
diff --git a/Tests/RunCMake/CPack/tests/PROJECT_META/VerifyResult.cmake b/Tests/RunCMake/CPack/tests/PROJECT_META/VerifyResult.cmake
new file mode 100644
index 0000000..b3accb5
--- /dev/null
+++ b/Tests/RunCMake/CPack/tests/PROJECT_META/VerifyResult.cmake
@@ -0,0 +1,30 @@
+function(checkPackageURL FILE TAG EXPECTED_URL)
+  getPackageInfo("${FILE}" "_file_info")
+  string(REPLACE "\n" ";" _file_info "${_file_info}")
+
+  set(_seen_url FALSE)
+  foreach(_line IN LISTS _file_info)
+    if(_line MATCHES "${TAG}: (.*)")
+      set(_seen_url TRUE)
+      if(NOT CMAKE_MATCH_1 STREQUAL EXPECTED_URL)
+        message(FATAL_ERROR "Unexpected `Homepage` URL: `${CMAKE_MATCH_1}` != `${EXPECTED_URL}`")
+      endif()
+      break()
+    endif()
+  endforeach()
+  if(NOT _seen_url)
+    message(FATAL_ERROR "The packge `${FILE}` do not have URL as expected")
+  endif()
+endfunction()
+
+if(GENERATOR_TYPE STREQUAL DEB)
+  set(_tag " Homepage") # NOTE The leading space
+elseif(GENERATOR_TYPE STREQUAL RPM)
+  set(_tag "URL.*")
+else()
+  message(FATAL_ERROR "Unexpected CPack generator")
+endif()
+
+checkPackageURL("${FOUND_FILE_1}" "${_tag}" "https://meta.test.info")
+
+# kate: indent-width 2;
diff --git a/Tests/RunCMake/CPack/tests/PROJECT_META/test.cmake b/Tests/RunCMake/CPack/tests/PROJECT_META/test.cmake
new file mode 100644
index 0000000..9c5266a
--- /dev/null
+++ b/Tests/RunCMake/CPack/tests/PROJECT_META/test.cmake
@@ -0,0 +1,11 @@
+project(
+  MetaInfoTest
+  VERSION 1.2.3
+  DESCRIPTION "This is going to be a summary"
+  HOMEPAGE_URL "https://meta.test.info"
+)
+install(FILES CMakeLists.txt DESTINATION foo COMPONENT test)
+
+if(PACKAGING_TYPE STREQUAL "COMPONENT")
+  set(CPACK_COMPONENTS_ALL test)
+endif()