CPack: Introduce CPACK_INSTALL_SCRIPTS variable

The singular name `CPACK_INSTALL_SCRIPT` has existed but was not linked
from the CPack documentation.  Also, it supported multiple values and
should have had a plural name.  Add a plural-named alternative now.
If both `CPACK_INSTALL_SCRIPTS` and `CPACK_INSTALL_SCRIPT` are set then
ignore the latter with a warning.

Signed-off-by: Alex Turbov <i.zaufi@gmail.com>

5 files changed, 28 insertions, 12 deletions

diff --git a/Tests/RunCMake/CPack/RunCMakeTest.cmake b/Tests/RunCMake/CPack/RunCMakeTest.cmake
index 37df57c..d93f280 100644
--- a/Tests/RunCMake/CPack/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CPack/RunCMakeTest.cmake
@@ -33,6 +33,6 @@ run_cpack_test(TIMESTAMPS "DEB.TIMESTAMPS;TGZ" false "COMPONENT")
 unset(ENVIRONMENT)
 run_cpack_test(USER_FILELIST "RPM.USER_FILELIST" false "MONOLITHIC")
 run_cpack_test(MD5SUMS "DEB.MD5SUMS" false "MONOLITHIC;COMPONENT")
-run_cpack_test(CPACK_INSTALL_SCRIPT "ZIP" false "MONOLITHIC")
+run_cpack_test_subtests(CPACK_INSTALL_SCRIPTS "singular;plural;both" "ZIP" false "MONOLITHIC")
 run_cpack_test(DEB_PACKAGE_VERSION_BACK_COMPATIBILITY "DEB.DEB_PACKAGE_VERSION_BACK_COMPATIBILITY" false "MONOLITHIC;COMPONENT")
 run_cpack_test_subtests(EXTERNAL "none;good;good_multi;bad_major;bad_minor;invalid_good;invalid_bad;stage_and_package" "External" false "MONOLITHIC;COMPONENT")
diff --git a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPT/test.cmake b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPT/test.cmake
deleted file mode 100644
index e3fe0ca..0000000
--- a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPT/test.cmake
+++ /dev/null
@@ -1,11 +0,0 @@
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/abc.txt" "test content")
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/user-script.cmake"
-  "file(INSTALL DESTINATION \"\${CMAKE_INSTALL_PREFIX}/foo\"
-    TYPE FILE FILES \"${CMAKE_CURRENT_BINARY_DIR}/abc.txt\")")
-set(CPACK_INSTALL_SCRIPT "${CMAKE_CURRENT_BINARY_DIR}/user-script.cmake")
-
-function(run_after_include_cpack)
-  file(READ "${CPACK_OUTPUT_CONFIG_FILE}" conf_file_)
-  string(REGEX REPLACE "SET\\(CPACK_INSTALL_CMAKE_PROJECTS [^)]*\\)" "" conf_file_ "${conf_file_}")
-  file(WRITE "${CPACK_OUTPUT_CONFIG_FILE}" "${conf_file_}")
-endfunction()
diff --git a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPT/ExpectedFiles.cmake b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/ExpectedFiles.cmake
index 02a7821..02a7821 100644
--- a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPT/ExpectedFiles.cmake
+++ b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/ExpectedFiles.cmake
diff --git a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/both-stderr.txt b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/both-stderr.txt
new file mode 100644
index 0000000..666030e
--- /dev/null
+++ b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/both-stderr.txt
@@ -0,0 +1 @@
+CPack Warning: Both CPACK_INSTALL_SCRIPTS and CPACK_INSTALL_SCRIPT are set, the latter will be ignored.
diff --git a/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/test.cmake b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/test.cmake
new file mode 100644
index 0000000..249d2e6
--- /dev/null
+++ b/Tests/RunCMake/CPack/tests/CPACK_INSTALL_SCRIPTS/test.cmake
@@ -0,0 +1,26 @@
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/abc.txt" "test content")
+set(user_script_ "${CMAKE_CURRENT_BINARY_DIR}/user-script.cmake")
+file(WRITE "${user_script_}"
+  "file(INSTALL DESTINATION \"\${CMAKE_INSTALL_PREFIX}/foo\"
+    TYPE FILE FILES \"${CMAKE_CURRENT_BINARY_DIR}/abc.txt\")")
+
+if(RunCMake_SUBTEST_SUFFIX STREQUAL "both")
+    set(CPACK_INSTALL_SCRIPT "${user_script_}")
+    set(CPACK_INSTALL_SCRIPTS "${CPACK_INSTALL_SCRIPT}")
+
+elseif(RunCMake_SUBTEST_SUFFIX STREQUAL "singular")
+    set(CPACK_INSTALL_SCRIPT "${user_script_}")
+
+elseif(RunCMake_SUBTEST_SUFFIX STREQUAL "plural")
+    set(CPACK_INSTALL_SCRIPTS "${user_script_}")
+
+else()
+    message(FATAL_ERROR "Unexpected subtest name: ${RunCMake_SUBTEST_SUFFIX}")
+
+endif()
+
+function(run_after_include_cpack)
+  file(READ "${CPACK_OUTPUT_CONFIG_FILE}" conf_file_)
+  string(REGEX REPLACE "SET\\(CPACK_INSTALL_CMAKE_PROJECTS [^)]*\\)" "" conf_file_ "${conf_file_}")
+  file(WRITE "${CPACK_OUTPUT_CONFIG_FILE}" "${conf_file_}")
+endfunction()