RFE: CMake automatic RPM provides (#1202899)

cmake.attr

@@ -0,0 +1,2 @@
+%__cmake_provides	%{_rpmconfigdir}/cmake.prov
+%__cmake_path		^/usr/lib(64)/cmake/.*/.*(Config\.cmake|-config\.cmake)$

cmake.prov

@@ -0,0 +1,78 @@
+#!/bin/python
+# -*- coding:utf-8 -*-
+#
+# Copyright (C) 2015 Daniel Vrátil <dvratil@redhat.com>
+#
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this program; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+import sys
+import re
+import glob
+
+class CMakeParser:
+    def __init__(self, filelist = None):
+        if filelist == None:
+            filelist = sys.stdin
+
+        paths = map(lambda x: x.rstrip(), filelist.readlines())
+        for path in paths:
+            modulePath, cmakeModule, lowercase = self.parseCmakeModuleConfig(path)
+            if modulePath and cmakeModule:
+                version = self.resolveCMakeModuleVersion(modulePath, cmakeModule, lowercase)
+
+                if version:
+                    print("cmake(%s) = %s" % (cmakeModule, version))
+                else:
+                    print("cmake(%s)" % cmakeModule)
+
+
+    def parseCmakeModuleConfig(self, configFile):
+        paths = configFile.rsplit("/", 3)
+
+        modulePath = "%s/cmake/%s" % (paths[0], paths[2])
+
+        lowercase = False
+        configFile = glob.glob("%s/*Config.cmake" % modulePath)
+        if not configFile:
+            configFile = glob.glob("%s/*-config.cmake" % modulePath)
+            lowercase = True
+        if not configFile:
+            return (None, None)
+
+        if lowercase:
+            moduleName = configFile[0][len(modulePath) + 1:-len("-config.cmake")]
+        else:
+            moduleName = configFile[0][len(modulePath) + 1:-len("Config.cmake")]
+
+        return (modulePath, moduleName, lowercase)
+
+    def resolveCMakeModuleVersion(self, modulePath, cmakeModule, lowercase):
+        versionFile = ("%s/%s-config-version.cmake" if lowercase else "%s/%sConfigVersion.cmake") % (modulePath, cmakeModule)
+        f = open(versionFile, 'r')
+        for line in f:
+            line = line.strip()
+
+            # set(PACKAGE_VERSION <version>)
+            version = re.match(r"^set[\ ]*\([\ ]*PACKAGE_VERSION[\ ]+[\"]*([0-9\.]+)[\"]*[\ ]*[.]*\)", line)
+            if version:
+                return version.groups(1)[0]
+
+        return None
+
+if __name__ == "__main__":
+    parser = CMakeParser()

cmake.spec

@@ -13,7 +13,7 @@
 
 Name:           cmake
 Version:        3.2.1
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Cross-platform make system
 
 Group:          Development/Tools
@@ -26,6 +26,9 @@ URL:            http://www.cmake.org
 Source0:        http://www.cmake.org/files/v3.2/cmake-%{version}%{?rcver}.tar.gz
 Source1:        cmake-init.el
 Source2:        macros.cmake
+# See https://bugzilla.redhat.com/show_bug.cgi?id=1202899
+Source3:        cmake.attr
+Source4:        cmake.prov
 # Patch to find DCMTK in Fedora (bug #720140)
 Patch0:         cmake-dcmtk.patch
 # Patch to fix RindRuby vendor settings
@@ -136,6 +139,11 @@ install -p -m 0644 %SOURCE1 %{buildroot}%{_emacs_sitestartdir}/
 install -p -m0644 -D %{SOURCE2} %{buildroot}%{rpm_macros_dir}/macros.cmake
 sed -i -e "s|@@CMAKE_VERSION@@|%{version}|" %{buildroot}%{rpm_macros_dir}/macros.cmake
 touch -r %{SOURCE2} %{buildroot}%{rpm_macros_dir}/macros.cmake
+%if 0%{?_rpmconfigdir:1}
+# RPM auto provides
+install -p -m0644 -D %{SOURCE3} %{buildroot}%{_prefix}/lib/rpm/fileattrs/cmake.attr
+install -p -m0755 -D %{SOURCE4} %{buildroot}%{_prefix}/lib/rpm/cmake.prov
+%endif
 mkdir -p %{buildroot}%{_libdir}/%{name}
 # Install copyright files for main package
 cp -p Copyright.txt %{buildroot}/%{_docdir}/%{name}/
@@ -191,6 +199,10 @@ update-mime-database %{?fedora:-n} %{_datadir}/mime &> /dev/null || :
 %{_docdir}/%{name}/Copyright.txt*
 %{_docdir}/%{name}/COPYING*
 %{rpm_macros_dir}/macros.cmake
+%if 0%{?_rpmconfigdir:1}
+%{_prefix}/lib/rpm/fileattrs/cmake.attr
+%{_prefix}/lib/rpm/cmake.prov
+%endif
 %{_bindir}/ccmake
 %{_bindir}/cmake
 %{_bindir}/cpack
@@ -221,6 +233,9 @@ update-mime-database %{?fedora:-n} %{_datadir}/mime &> /dev/null || :
 
 
 %changelog
+* Tue Mar 17 2015 Rex Dieter <rdieter@fedoraproject.org> 3.2.1-2
+- RFE: CMake automatic RPM provides  (#1202899)
+
 * Wed Mar 11 2015 Orion Poplawski <orion@cora.nwra.com> - 3.2.1-1
 - Update to 3.2.1