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Added macro to easily check agains certain Vala versions

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1 parent cd992f8 commit e986c63c18ab2bdff8ea822e2c6e91f82f1ace88 @jakobwesthoff committed Dec 16, 2009
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  1. +96 −0 vala/ValaVersion.cmake
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96 vala/ValaVersion.cmake
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+##
+# Copyright 2009 Jakob Westhoff. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY JAKOB WESTHOFF ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL JAKOB WESTHOFF OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# The views and conclusions contained in the software and documentation are those
+# of the authors and should not be interpreted as representing official policies,
+# either expressed or implied, of Jakob Westhoff
+##
+
+include(ParseArguments)
+find_package(Vala REQUIRED)
+
+##
+# Ensure a certain valac version is available
+#
+# The initial argument is the version to check for
+#
+# It may be followed by a optional parameter to specifiy a version range. The
+# following options are valid:
+#
+# EXACT
+# Vala needs to be available in the exact version given
+#
+# MINIMUM
+# The provided version is the minimum version. Therefore Vala needs to be
+# available in the given version or any higher version
+#
+# MAXIMUM
+# The provided version is the maximum. Therefore Vala needs to be available
+# in the given version or any version older than this
+#
+# If no option is specified the version will be treated as a minimal version.
+##
+macro(ensure_vala_version version)
+ parse_arguments(ARGS "" "MINIMUM;MAXIMUM;EXACT" ${ARGN})
+ set(compare_message "")
+ set(error_message "")
+ if(ARGS_MINIMUM)
+ set(compare_message "a minimum ")
+ set(error_message "or greater ")
+ elseif(ARGS_MAXIMUM)
+ set(compare_message "a maximum ")
+ set(error_message "or less ")
+ endif(ARGS_MINIMUM)
+
+ message(STATUS
+ "checking for ${compare_message}Vala version of ${version}"
+ )
+
+ unset(version_accepted)
+
+ # MINIMUM is the default if no option is specified
+ if(ARGS_EXACT)
+ if(${VALA_VERSION} VERSION_EQUAL ${version} )
+ set(version_accepted TRUE)
+ endif(${VALA_VERSION} VERSION_EQUAL ${version})
+ elseif(ARGS_MAXIMUM)
+ if(${VALA_VERSION} VERSION_LESS ${version} OR ${VALA_VERSION} VERSION_EQUAL ${version})
+ set(version_accepted TRUE)
+ endif(${VALA_VERSION} VERSION_LESS ${version} OR ${VALA_VERSION} VERSION_EQUAL ${version})
+ else(ARGS_MAXIMUM)
+ if(${VALA_VERSION} VERSION_GREATER ${version} OR ${VALA_VERSION} VERSION_EQUAL ${version})
+ set(version_accepted TRUE)
+ endif(${VALA_VERSION} VERSION_GREATER ${version} OR ${VALA_VERSION} VERSION_EQUAL ${version})
+ endif(ARGS_EXACT)
+
+ if (NOT version_accepted)
+ message(FATAL_ERROR
+ "Vala version ${version} ${error_message}is required."
+ )
+ endif(NOT version_accepted)
+
+ message(STATUS
+ " found Vala, version ${VALA_VERSION}"
+ )
+endmacro(ensure_vala_version)

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