1 files changed, 93 insertions, 0 deletions
diff --git a/cmake/Internal/CPack/CPackRPM.cmake b/cmake/Internal/CPack/CPackRPM.cmake
new file mode 100644
index 00000000..174d28b9
--- /dev/null
+++ b/cmake/Internal/CPack/CPackRPM.cmake
@@ -0,0 +1,93 @@
+#
+# Wrapper for CPackRPM.cmake
+#
+
+IF(NOT DEFINED RPM_RECOMMENDS)
+  EXECUTE_PROCESS(COMMAND rpm --recommends ERROR_QUIET RESULT_VARIABLE RPM_RECOMMENDS)
+  MESSAGE("CPackRPM:Debug: Testing rpm --recommends: ${RPM_RECOMMENDS}")
+ENDIF()
+
+#
+# Support for per-component LICENSE and VENDOR
+#
+# per component values, if present, are copied into global CPACK_RPM_PACKAGE_xxx
+#
+macro(set_from_component WHAT)
+  set(orig_CPACK_RPM_PACKAGE_${WHAT} ${CPACK_RPM_PACKAGE_${WHAT}})
+  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${WHAT})
+    set(CPACK_RPM_PACKAGE_${WHAT} ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${WHAT}})
+  endif()
+endmacro()
+macro(restore WHAT)
+  set(CPACK_RPM_PACKAGE_${WHAT} ${orig_CPACK_RPM_PACKAGE_${WHAT}})
+endmacro()
+
+set_from_component(LICENSE)
+set_from_component(VENDOR)
+set_from_component(VERSION)
+
+#
+# Support for the %posttrans scriptlet
+#
+# the scriptlet, if present, is appended (together with the %posttrans tag)
+# to the pre-uninstall scriptlet
+#
+if(CMAKE_VERSION VERSION_LESS 3.18)
+  set(base_time "PRE")
+  set(base_type "UNINSTALL")
+  set(base_var CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_${base_time}_${base_type}_SCRIPT_FILE)
+  set(acc)
+
+  macro(read_one_file time_ type_ tag_)
+    set(var CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_${time_}_${type_}_SCRIPT_FILE)
+    if (${var})
+      file(READ ${${var}} content)
+      set(acc "${tag_}\n${content}\n\n${acc}")
+    endif()
+  endmacro()
+
+  read_one_file("POST" "TRANS" "%posttrans")
+  if (acc)
+    set(orig_${base_var} ${${base_var}})
+    read_one_file(${base_time} ${base_type} "")
+    set(${base_var} ${CPACK_TOPLEVEL_DIRECTORY}/SPECS/${CPACK_RPM_PACKAGE_COMPONENT}_${base_time}_${base_type}.scriptlet)
+    file(WRITE ${${base_var}} "${acc}")
+  endif()
+endif(CMAKE_VERSION VERSION_LESS 3.18)
+
+#
+# Support for the Recommends: tag.
+# We don't use Suggests: so here he hijack Suggests: variable
+# to implement Recommends:
+#
+IF (CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_RECOMMENDS)
+  IF (RPM_RECOMMENDS EQUAL 0) # exit code 0 means ok
+    SET(TMP_RPM_SUGGESTS "Recommends: ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_RECOMMENDS}")
+  ELSE() # rpm is too old to recommend
+    SET(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_REQUIRES
+     "${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_REQUIRES} ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_RECOMMENDS}")
+  ENDIF()
+ENDIF()
+
+# load the original CPackRPM.cmake
+set(orig_CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
+unset(CMAKE_MODULE_PATH)
+if (CMAKE_VERSION VERSION_GREATER "3.12.99")
+  include(Internal/CPack/CPackRPM)
+else()
+  include(CPackRPM)
+endif()
+set(CMAKE_MODULE_PATH ${orig_CMAKE_MODULE_PATH})
+
+restore(LICENSE)
+restore(VENDOR)
+restore(VERSION)
+if(${orig_${base_var}})
+  set(${base_var} ${orig_${base_var}})
+endif()
+
+# per-component cleanup
+foreach(_RPM_SPEC_HEADER URL REQUIRES SUGGESTS PROVIDES OBSOLETES PREFIX CONFLICTS AUTOPROV AUTOREQ AUTOREQPROV)
+  unset(TMP_RPM_${_RPM_SPEC_HEADER})
+  unset(CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP)
+endforeach()