From 9ed546ff499b452a0266ab6c1c53e3131a67fd9b Mon Sep 17 00:00:00 2001
From: Evgeny Kalishenko <ydginster@gmail.com>
Date: Thu, 9 Oct 2014 21:29:18 +0400
Subject: [PATCH] CPackRPM: Support PREUN and POSTUN requirements

---
 Modules/CPackRPM.cmake | 37 +++++++++++++++++++++++++++++++++----
 1 file changed, 33 insertions(+), 4 deletions(-)

diff --git a/Modules/CPackRPM.cmake b/Modules/CPackRPM.cmake
index 6deb4c082..56d9b66d7 100644
--- a/Modules/CPackRPM.cmake
+++ b/Modules/CPackRPM.cmake
@@ -163,6 +163,31 @@
 #   set(CPACK_RPM_PACKAGE_REQUIRES_POST "shadow-utils, initscripts")
 #
 #
+# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_POSTUN
+#
+#  RPM spec requires(postun) field.
+#
+#  * Mandatory : NO
+#  * Default   : -
+#
+#  May be used to set RPM postuninstall dependencies (requires(postun)).  Note that you must enclose
+#  the complete requires string between quotes, for example::
+#
+#   set(CPACK_RPM_PACKAGE_REQUIRES_POSTUN "shadow-utils, initscripts")
+#
+#
+# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_PREUN
+#
+#  RPM spec requires(preun) field.
+#
+#  * Mandatory : NO
+#  * Default   : -
+#
+#  May be used to set RPM preuninstall dependencies (requires(preun)).  Note that you must enclose
+#  the complete requires string between quotes, for example::
+#
+#   set(CPACK_RPM_PACKAGE_REQUIRES_PREUN "shadow-utils, initscripts")
+#
 # .. variable:: CPACK_RPM_PACKAGE_SUGGESTS
 #
 #  RPM spec suggest field.
@@ -412,7 +437,7 @@ if(CPACK_RPM_PACKAGE_DEBUG)
                     OUTPUT_VARIABLE _TMP_LSB_RELEASE_OUTPUT
                     ERROR_QUIET
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
-    string(REPLACE "\n" ", "
+    string(REGEX REPLACE "\n" ", "
            LSB_RELEASE_OUTPUT
            ${_TMP_LSB_RELEASE_OUTPUT})
   else ()
@@ -425,7 +450,7 @@ endif()
 # to shut down warning about space in buildtree
 # some recent RPM version should support space in different places.
 # not checked [yet].
-if(CPACK_TOPLEVEL_DIRECTORY MATCHES " ")
+if(CPACK_TOPLEVEL_DIRECTORY MATCHES ".* .*")
   message(FATAL_ERROR "${RPMBUILD_EXECUTABLE} can't handle paths with spaces, use a build directory without spaces for building RPMs.")
 endif()
 
@@ -625,7 +650,7 @@ endif()
 # There may be some COMPONENT specific variables as well
 # If component specific var is not provided we use the global one
 # for each component
-foreach(_RPM_SPEC_HEADER URL REQUIRES SUGGESTS PROVIDES OBSOLETES PREFIX CONFLICTS AUTOPROV AUTOREQ AUTOREQPROV REQUIRES_PRE REQUIRES_POST)
+foreach(_RPM_SPEC_HEADER URL REQUIRES SUGGESTS PROVIDES OBSOLETES PREFIX CONFLICTS AUTOPROV AUTOREQ AUTOREQPROV REQUIRES_PRE REQUIRES_POST REQUIRES_PREUN REQUIRES_POSTUN)
     if(CPACK_RPM_PACKAGE_DEBUG)
       message("CPackRPM:Debug: processing ${_RPM_SPEC_HEADER}")
     endif()
@@ -665,7 +690,9 @@ foreach(_RPM_SPEC_HEADER URL REQUIRES SUGGESTS PROVIDES OBSOLETES PREFIX CONFLIC
     string(SUBSTRING ${_RPM_SPEC_HEADER} 0 1 _PACKAGE_HEADER_NAME)
     set(_PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME}${_PACKAGE_HEADER_TAIL}")
     # The following keywords require parentheses around the "pre" or "post" suffix in the final RPM spec file.
-    if("${_RPM_SPEC_HEADER}" MATCHES "REQUIRES_PRE"  OR  "${_RPM_SPEC_HEADER}" MATCHES "REQUIRES_POST")
+    set(SCRIPTS_REQUIREMENTS_LIST REQUIRES_PRE REQUIRES_POST REQUIRES_PREUN REQUIRES_POSTUN)
+    list(FIND SCRIPTS_REQUIREMENTS_LIST ${_RPM_SPEC_HEADER} IS_SCRIPTS_REQUIREMENT_FOUND)
+    if(NOT ${IS_SCRIPTS_REQUIREMENT_FOUND} EQUAL -1)
       string(REPLACE "_" "(" _PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME}")
       set(_PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME})")
     endif()
@@ -1067,6 +1094,8 @@ Vendor:         \@CPACK_RPM_PACKAGE_VENDOR\@
 \@TMP_RPM_REQUIRES\@
 \@TMP_RPM_REQUIRES_PRE\@
 \@TMP_RPM_REQUIRES_POST\@
+\@TMP_RPM_REQUIRES_PREUN\@
+\@TMP_RPM_REQUIRES_POSTUN\@
 \@TMP_RPM_PROVIDES\@
 \@TMP_RPM_OBSOLETES\@
 \@TMP_RPM_CONFLICTS\@