CPackRPM: add scriplets tags only if scripts exist

Scriplet tags should not be added to generated
spec files if scripts weren't provided as those
tags are otherwise present in generated rpm file
even if the script wasn't provided thereby
generating unneeded dependency on shell.

Fixes: #21345

Modules/Internal/CPack/CPackRPM.cmake

@@ -6,6 +6,56 @@
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
 
+function(set_spec_script_if_enabled TYPE PACKAGE_NAME VAR)
+  if(NOT "${VAR}" STREQUAL "" AND NOT "${VAR}" STREQUAL "\n")
+    if(PACKAGE_NAME)
+      set(PACKAGE_NAME " -n ${PACKAGE_NAME}")
+    endif()
+    set(${TYPE}_
+      "%${TYPE}${PACKAGE_NAME}\n"
+      "${VAR}\n" PARENT_SCOPE)
+  else()
+    set(${TYPE} "" PARENT_SCOPE)
+  endif()
+endfunction()
+
+macro(set_spec_scripts PACKAGE_NAME)
+  # we should only set scripts that were provided
+  # as script announcement without content inside
+  # spec file will generate unneeded dependency
+  # on shell
+
+  set_spec_script_if_enabled(
+    "post"
+    "${PACKAGE_NAME}"
+    "${RPM_SYMLINK_POSTINSTALL}\n${CPACK_RPM_SPEC_POSTINSTALL}")
+
+  set_spec_script_if_enabled(
+    "posttrans"
+    "${PACKAGE_NAME}"
+    "${CPACK_RPM_SPEC_POSTTRANS}")
+
+  set_spec_script_if_enabled(
+    "postun"
+    "${PACKAGE_NAME}"
+    "${CPACK_RPM_SPEC_POSTUNINSTALL}")
+
+  set_spec_script_if_enabled(
+    "pre"
+    "${PACKAGE_NAME}"
+    "${CPACK_RPM_SPEC_PREINSTALL}")
+
+  set_spec_script_if_enabled(
+    "pretrans"
+    "${PACKAGE_NAME}"
+    "${CPACK_RPM_SPEC_PRETRANS}")
+
+  set_spec_script_if_enabled(
+    "preun"
+    "${PACKAGE_NAME}"
+    "${CPACK_RPM_SPEC_PREUNINSTALL}")
+endmacro()
+
 function(get_file_permissions FILE RETURN_VAR)
   execute_process(COMMAND ls -l ${FILE}
           OUTPUT_VARIABLE permissions_
@@ -1613,6 +1663,9 @@ Vendor:         \@CPACK_RPM_PACKAGE_VENDOR\@
     )
 
   elseif(GENERATE_SPEC_PARTS) # binary rpm with single debuginfo package
+
+    set_spec_scripts("${CPACK_RPM_PACKAGE_NAME}")
+
     file(WRITE ${CPACK_RPM_BINARY_SPECFILE}.in
         "# -*- rpm-spec -*-
 %package -n \@CPACK_RPM_PACKAGE_NAME\@
@@ -1643,24 +1696,12 @@ Vendor:         \@CPACK_RPM_PACKAGE_VENDOR\@
 %description -n \@CPACK_RPM_PACKAGE_NAME\@
 \@CPACK_RPM_PACKAGE_DESCRIPTION\@
 
-%post -n \@CPACK_RPM_PACKAGE_NAME\@
+\@post_\@
-\@RPM_SYMLINK_POSTINSTALL\@
+\@posttrans_\@
-\@CPACK_RPM_SPEC_POSTINSTALL\@
+\@postun_\@
-
+\@pre_\@
-%posttrans -n \@CPACK_RPM_PACKAGE_NAME\@
+\@pretrans_\@
-\@CPACK_RPM_SPEC_POSTTRANS\@
+\@preun_\@
-
-%postun -n \@CPACK_RPM_PACKAGE_NAME\@
-\@CPACK_RPM_SPEC_POSTUNINSTALL\@
-
-%pre -n \@CPACK_RPM_PACKAGE_NAME\@
-\@CPACK_RPM_SPEC_PREINSTALL\@
-
-%pretrans -n \@CPACK_RPM_PACKAGE_NAME\@
-\@CPACK_RPM_SPEC_PRETRANS\@
-
-%preun -n \@CPACK_RPM_PACKAGE_NAME\@
-\@CPACK_RPM_SPEC_PREUNINSTALL\@
 
 %files -n \@CPACK_RPM_PACKAGE_NAME\@
 %defattr(\@TMP_DEFAULT_FILE_PERMISSIONS\@,\@TMP_DEFAULT_USER\@,\@TMP_DEFAULT_GROUP\@,\@TMP_DEFAULT_DIR_PERMISSIONS\@)
@@ -1687,6 +1728,8 @@ Vendor:         \@CPACK_RPM_PACKAGE_VENDOR\@
     set(RPMBUILD_FLAGS "-bb")
     if(CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE OR NOT CPACK_RPM_USER_BINARY_SPECFILE)
 
+      set_spec_scripts("")
+
       file(WRITE ${CPACK_RPM_BINARY_SPECFILE}.in
         "# Restore old style debuginfo creation for rpm >= 4.14.
 %undefine _debugsource_packages
@@ -1750,24 +1793,12 @@ mv %_topdir/tmpBBroot $RPM_BUILD_ROOT
 
 %clean
 
-%post
+\@post_\@
-\@RPM_SYMLINK_POSTINSTALL\@
+\@posttrans_\@
-\@CPACK_RPM_SPEC_POSTINSTALL\@
+\@postun_\@
-
+\@pre_\@
-%posttrans
+\@pretrans_\@
-\@CPACK_RPM_SPEC_POSTTRANS\@
+\@preun_\@
-
-%postun
-\@CPACK_RPM_SPEC_POSTUNINSTALL\@
-
-%pre
-\@CPACK_RPM_SPEC_PREINSTALL\@
-
-%pretrans
-\@CPACK_RPM_SPEC_PRETRANS\@
-
-%preun
-\@CPACK_RPM_SPEC_PREUNINSTALL\@
 
 %files
 %defattr(\@TMP_DEFAULT_FILE_PERMISSIONS\@,\@TMP_DEFAULT_USER\@,\@TMP_DEFAULT_GROUP\@,\@TMP_DEFAULT_DIR_PERMISSIONS\@)

Tests/RunCMake/CPack/RunCMakeTest.cmake

@@ -16,7 +16,7 @@ run_cpack_test(VERSION "RPM.VERSION;DEB.VERSION" false "MONOLITHIC;COMPONENT")
 run_cpack_test(EXTRA "DEB.EXTRA" false "COMPONENT")
 run_cpack_test_subtests(GENERATE_SHLIBS "soversion_not_zero;soversion_zero" "DEB.GENERATE_SHLIBS" true "COMPONENT")
 run_cpack_test(GENERATE_SHLIBS_LDCONFIG "DEB.GENERATE_SHLIBS_LDCONFIG" true "COMPONENT")
-run_cpack_test_subtests(INSTALL_SCRIPTS "default;single_debug_info" "RPM.INSTALL_SCRIPTS" false "COMPONENT")
+run_cpack_test_subtests(INSTALL_SCRIPTS "default;single_debug_info;no_scripts;no_scripts_single_debug_info" "RPM.INSTALL_SCRIPTS" false "COMPONENT")
 run_cpack_test(LONG_FILENAMES "DEB.LONG_FILENAMES" false "MONOLITHIC")
 run_cpack_test_subtests(MAIN_COMPONENT "invalid;found" "RPM.MAIN_COMPONENT" false "COMPONENT")
 run_cpack_test(MINIMAL "RPM.MINIMAL;DEB.MINIMAL;7Z;TBZ2;TGZ;TXZ;TZ;ZIP;STGZ;External" false "MONOLITHIC;COMPONENT")

Tests/RunCMake/CPack/tests/INSTALL_SCRIPTS/ExpectedFiles.cmake

@@ -1,4 +1,4 @@
-if(RunCMake_SUBTEST_SUFFIX STREQUAL "single_debug_info")
+if(RunCMake_SUBTEST_SUFFIX MATCHES ".*single_debug_info")
   set(EXPECTED_FILE_1 "install_scripts-0.1.1-1.*.rpm")
 else()
   set(EXPECTED_FILE_1_COMPONENT "foo")

Tests/RunCMake/CPack/tests/INSTALL_SCRIPTS/RPM-COMPONENT-no_scripts_single_debug_info-stderr.txt

@@ -0,0 +1 @@
+.*

Tests/RunCMake/CPack/tests/INSTALL_SCRIPTS/RPM-Prerequirements.cmake

@@ -1,5 +1,5 @@
 function(get_test_prerequirements found_var config_file)
-  if(SUBTEST_SUFFIX STREQUAL "single_debug_info")
+  if(SUBTEST_SUFFIX MATCHES ".*single_debug_info")
     include(${config_file})
 
     if(OBJDUMP_EXECUTABLE)

Tests/RunCMake/CPack/tests/INSTALL_SCRIPTS/VerifyResult.cmake

@@ -7,23 +7,34 @@ function(checkScripts_ FILE COMPARE_LIST)
           ERROR_QUIET
           OUTPUT_STRIP_TRAILING_WHITESPACE)
 
-  string(REPLACE "\n" ";" FILE_SCRIPTS_LIST_ "${FILE_SCRIPTS_}")
+  if(COMPARE_LIST STREQUAL "")
+    if(NOT FILE_SCRIPTS_ STREQUAL "")
+      message(FATAL_ERROR "No scripts were expected in '${FILE}'; file info: '${FILE_SCRIPTS_}'")
+    endif()
+  else()
+    string(REPLACE "\n" ";" FILE_SCRIPTS_LIST_ "${FILE_SCRIPTS_}")
 
-  foreach(COMPARE_REGEX_ IN LISTS COMPARE_LIST)
+    foreach(COMPARE_REGEX_ IN LISTS COMPARE_LIST)
-    unset(FOUND_)
+      unset(FOUND_)
 
-    foreach(COMPARE_ IN LISTS FILE_SCRIPTS_LIST_)
+      foreach(COMPARE_ IN LISTS FILE_SCRIPTS_LIST_)
-      if(COMPARE_ MATCHES "${COMPARE_REGEX_}")
+        if(COMPARE_ MATCHES "${COMPARE_REGEX_}")
-        set(FOUND_ true)
+          set(FOUND_ true)
-        break()
+          break()
+        endif()
+      endforeach()
+
+      if(NOT FOUND_)
+        message(FATAL_ERROR "Missing scripts in '${FILE}'; file info: '${FILE_SCRIPTS_}'; missing: '${COMPARE_REGEX_}'")
       endif()
     endforeach()
-
+  endif()
-    if(NOT FOUND_)
-      message(FATAL_ERROR "Missing scripts in '${FILE}'; file info: '${FILE_SCRIPTS_}'; missing: '${COMPARE_REGEX_}'")
-    endif()
-  endforeach()
 endfunction()
 
-checkScripts_("${FOUND_FILE_1}" "echo \"pre install foo\";echo \"post install foo\";echo \"pre uninstall foo\";echo \"post uninstall foo\";echo \"pre trans foo\";echo \"post trans foo\"")
+if(RunCMake_SUBTEST_SUFFIX MATCHES "no_scripts.*")
-checkScripts_("${FOUND_FILE_2}" "echo \"pre install\";echo \"post install\";echo \"pre uninstall\";echo \"post uninstall\";echo \"pre trans\";echo \"post trans\"")
+  checkScripts_("${FOUND_FILE_1}" "")
+  checkScripts_("${FOUND_FILE_2}" "")
+else()
+  checkScripts_("${FOUND_FILE_1}" "echo \"pre install foo\";echo \"post install foo\";echo \"pre uninstall foo\";echo \"post uninstall foo\";echo \"pre trans foo\";echo \"post trans foo\"")
+  checkScripts_("${FOUND_FILE_2}" "echo \"pre install\";echo \"post install\";echo \"pre uninstall\";echo \"post uninstall\";echo \"pre trans\";echo \"post trans\"")
+endif()

Tests/RunCMake/CPack/tests/INSTALL_SCRIPTS/test.cmake

@@ -1,31 +1,5 @@
 if(GENERATOR_TYPE STREQUAL "RPM")
-  set(CPACK_RPM_PRE_INSTALL_SCRIPT_FILE
+  if(RunCMake_SUBTEST_SUFFIX MATCHES ".*single_debug_info")
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_install.sh")
-  set(CPACK_RPM_POST_INSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_install.sh")
-  set(CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall.sh")
-  set(CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall.sh")
-  set(CPACK_RPM_PRE_TRANS_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_trans.sh")
-  set(CPACK_RPM_POST_TRANS_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_trans.sh")
-
-  set(CPACK_RPM_foo_PRE_INSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_install_foo.sh")
-  set(CPACK_RPM_foo_POST_INSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_install_foo.sh")
-  set(CPACK_RPM_foo_PRE_UNINSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall_foo.sh")
-  set(CPACK_RPM_foo_POST_UNINSTALL_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall_foo.sh")
-  set(CPACK_RPM_foo_PRE_TRANS_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/pre_trans_foo.sh")
-  set(CPACK_RPM_foo_POST_TRANS_SCRIPT_FILE
-    "${CMAKE_CURRENT_BINARY_DIR}/post_trans_foo.sh")
-
-  if(RunCMake_SUBTEST_SUFFIX STREQUAL "single_debug_info")
     set(CPACK_RPM_MAIN_COMPONENT "foo")
     set(CPACK_RPM_DEBUGINFO_SINGLE_PACKAGE ON)
     set(CPACK_RPM_FOO_FILE_NAME "RPM-DEFAULT")
@@ -34,33 +8,63 @@ endif()
 
 set(CMAKE_BUILD_WITH_INSTALL_RPATH 1)
 
-# default
+if(NOT RunCMake_SUBTEST_SUFFIX MATCHES "no_scripts.*")
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_install.sh"
+  if(GENERATOR_TYPE STREQUAL "RPM")
-    "echo \"pre install\"\n")
+    set(CPACK_RPM_PRE_INSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_install.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_install.sh")
-    "echo \"post install\"\n")
+    set(CPACK_RPM_POST_INSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/post_install.sh")
-    "echo \"pre uninstall\"\n")
+    set(CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall.sh")
-    "echo \"post uninstall\"\n")
+    set(CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_trans.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall.sh")
-    "echo \"pre trans\"\n")
+    set(CPACK_RPM_PRE_TRANS_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_trans.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_trans.sh")
-    "echo \"post trans\"\n")
+    set(CPACK_RPM_POST_TRANS_SCRIPT_FILE
+      "${CMAKE_CURRENT_BINARY_DIR}/post_trans.sh")
 
-# specific
+    set(CPACK_RPM_foo_PRE_INSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_install_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_install_foo.sh")
-    "echo \"pre install foo\"\n")
+    set(CPACK_RPM_foo_POST_INSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_install_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/post_install_foo.sh")
-    "echo \"post install foo\"\n")
+    set(CPACK_RPM_foo_PRE_UNINSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall_foo.sh")
-    "echo \"pre uninstall foo\"\n")
+    set(CPACK_RPM_foo_POST_UNINSTALL_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall_foo.sh")
-    "echo \"post uninstall foo\"\n")
+    set(CPACK_RPM_foo_PRE_TRANS_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_trans_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/pre_trans_foo.sh")
-    "echo \"pre trans foo\"\n")
+    set(CPACK_RPM_foo_POST_TRANS_SCRIPT_FILE
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_trans_foo.sh"
+      "${CMAKE_CURRENT_BINARY_DIR}/post_trans_foo.sh")
-    "echo \"post trans foo\"\n")
+  endif()
+
+  # default
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_install.sh"
+      "echo \"pre install\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_install.sh"
+      "echo \"post install\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall.sh"
+      "echo \"pre uninstall\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall.sh"
+      "echo \"post uninstall\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_trans.sh"
+      "echo \"pre trans\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_trans.sh"
+      "echo \"post trans\"\n")
+
+  # specific
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_install_foo.sh"
+      "echo \"pre install foo\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_install_foo.sh"
+      "echo \"post install foo\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_uninstall_foo.sh"
+      "echo \"pre uninstall foo\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_uninstall_foo.sh"
+      "echo \"post uninstall foo\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/pre_trans_foo.sh"
+      "echo \"pre trans foo\"\n")
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/post_trans_foo.sh"
+      "echo \"post trans foo\"\n")
+endif()
 
 install(FILES CMakeLists.txt DESTINATION foo COMPONENT foo)
 install(FILES CMakeLists.txt DESTINATION bar COMPONENT bar)