X-Git-Url: https://git.ralfj.de/mass-build.git/blobdiff_plain/d8ca509a6a8790a2470477c6011c039272f269f4..dcc5ee50d6903bfb5316927c0f64b3b351199a28:/build_system.py

diff --git a/build_system.py b/build_system.py
index 971cf7b..4658f4a 100644
--- a/build_system.py
+++ b/build_system.py
@@ -1,3 +1,20 @@
+# mass-build - Easily Build Software Involving a Large Amount of Source Repositories
+# Copyright (C) 2012 Ralf Jung <post@ralfj.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU 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 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 os, shutil, subprocess
 
 '''A build system must have a "build" method with parameters "reconfigure" and "waitAfterConfig".'''
@@ -9,6 +26,27 @@ class CMake:
 		self.buildFolder = os.path.abspath(buildFolder)
 		self.config = config
 	
+	def setEnv(self, name, val):
+		'''Set the given environment variable, return old value'''
+		oldVal = os.getenv(name)
+		os.putenv(name, val)
+		return oldVal
+	
+	def prependDirToEnv(self, name, dir, default):
+		'''Prepends the given directory to the environment variable. If the variable is empty, dir isprepended to the default.
+		   Returns the old value.'''
+		oldVal = os.getenv(name)
+		oldPaths = default if oldVal is None else oldVal
+		os.putenv(name, dir+':'+oldPaths)
+		return oldVal
+	
+	def restoreEnv(self, name, oldVal):
+		'''Restore environment variable to previous value'''
+		if oldVal is None:
+			os.unsetenv(name)
+		else:
+			os.putenv(name, oldVal)
+	
 	def build(self, reconfigure, waitAfterConfig):
 		# Make sure we have a build directory
 		if not os.path.exists(self.buildFolder): os.makedirs(self.buildFolder)
@@ -16,13 +54,17 @@ class CMake:
 		# In case of reconfiguration, delete cache file if it exists
 		cacheFile = 'CMakeCache.txt'
 		if os.path.exists(cacheFile) and reconfigure: os.remove(cacheFile)
-		# Run cmake
-		os.putenv('PKG_CONFIG_PATH', os.path.join(self.config['installDir'], 'lib', 'pkgconfig')) # I found no way to do this within cmake
-		os.putenv('CMAKE_PREFIX_PATH', self.config['installDir'])
+		# Run cmake, in the proper environment, then restore old environment
+		oldPKGConfigPath = self.setEnv('PKG_CONFIG_PATH', os.path.join(self.config['installDir'], 'lib', 'pkgconfig'))
+		oldCMakePrefixPath = self.setEnv('CMAKE_PREFIX_PATH', self.config['installDir'])
+		oldXDGDataDirs = self.prependDirToEnv('XDG_DATA_DIRS', os.path.join(self.config['installDir'], 'share'), '/usr/share')
+		oldXDGConfigDirs = self.prependDirToEnv('XDG_CONFIG_DIRS', os.path.join(self.config['installDir'], 'etc', 'xdg'), '/etc/xdg')
 		subprocess.check_call(['cmake', self.sourceFolder, '-DCMAKE_BUILD_TYPE='+self.config['buildType'],
 			'-DCMAKE_INSTALL_PREFIX='+self.config['installDir']]+self.config.get('cmakeParameters', []))
-		os.unsetenv('PKG_CONFIG_PATH')
-		os.unsetenv('CMAKE_PREFIX_PATH')
+		self.restoreEnv('PKG_CONFIG_PATH', oldPKGConfigPath)
+		self.restoreEnv('CMAKE_PREFIX_PATH', oldCMakePrefixPath)
+		self.restoreEnv('XDG_DATA_DIRS', oldXDGDataDirs)
+		self.restoreEnv('XDG_CONFIG_DIRS', oldXDGConfigDirs)
 		# if asked to do so, wait
 		if waitAfterConfig:
 			raw_input('Configuration done. Hit "Enter" to build the project. ')
@@ -43,8 +85,11 @@ try:
 			self.vcs = vcs
 
 		def build(self, reconfigure, waitAfterConfig): # reconfigure is ignored (we always do a reconfiguration)
-			# create auto-debuild configuration
+			# get version name
 			versionName = self.config['versionName'] if 'versionName' in self.config else self.vcs.version()
+			if versionName is None:
+				raise Exception("VCS did not provide us with a proper version number, please provide one manually")
+			# create auto-debuild configuration
 			autoDebuildConfig = {
 				'sourceName': self.config['name'],
 				'buildSystem': self.config['buildSystem'],
@@ -56,11 +101,9 @@ try:
 				'version': versionName,
 				'waitAfterConfig': waitAfterConfig,
 			}
-			if autoDebuildConfig['version'] is None:
-				raise Exception("VCS did not provide us with a proper version number, please fix this")
 			# copy some more optional configuration
-			for option in ('dbgPackage', 'section', 'withPython2', 'binarySkipFiles', 'binaryInstallFiles',
-					'buildDepends', 'binaryDepends', 'binaryRecommends', 'binaryProvides', 'binaryConflicts', 'binaryBreaks',
+			for option in ('epoch', 'dbgPackage', 'section', 'withPython2', 'binarySkipFiles', 'binaryInstallFiles',
+					'buildDepends', 'binaryDepends', 'binaryShims', 'binaryRecommends', 'binaryProvides', 'binaryConflicts', 'binaryBreaks',
 					'binaryReplaces', 'binaryBreaksReplaces',
 					'alternatives', 'cmakeParameters', 'automakeParameters'):
 				if option in self.config: