56 lines
2.2 KiB
Plaintext
56 lines
2.2 KiB
Plaintext
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## ola.m4 -- macros for OLA
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## Copyright (C) 2009 Simon Newton
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2, or (at your option)
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## any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# PROTOBUF_SUPPORT(version)
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# Check that the protobuf headers are installed and that protoc is the correct
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# version
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# -----------------------------------------------------------------------------
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AC_DEFUN([PROTOBUF_SUPPORT],
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[
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AC_REQUIRE_CPP()
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AC_CHECK_HEADER(google/protobuf/stubs/common.h, ,
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AC_MSG_ERROR('protobuf library not installed'))
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AC_PATH_PROG([PROTOC],[protoc])
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if test -z "$PROTOC" ; then
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AC_MSG_ERROR([cannot find 'protoc' program]);
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elif test -n "$1" ; then
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AC_MSG_CHECKING([protoc version])
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[protoc_version=`$PROTOC --version 2>&1 | grep 'libprotoc' | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`]
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[required=$1]
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[required_major=`echo $required | sed 's/[^0-9].*//'`]
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[required_minor=`echo $required | sed 's/[0-9][0-9]*\.\([0-9][0-9]*\)\.[0-9][0-9]*/\1/'`]
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[required_patch=`echo $required | sed 's/^.*[^0-9]//'`]
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[actual_major=`echo $protoc_version | sed 's/[^0-9].*//'`]
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[actual_minor=`echo $protoc_version | sed 's/[0-9][0-9]*\.\([0-9][0-9]*\)\.[0-9][0-9]*/\1/'`]
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[actual_patch=`echo $protoc_version | sed 's/^.*[^0-9]//'`]
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protoc_version_proper=`expr \
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$actual_major \> $required_major \| \
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$actual_major \= $required_major \& \
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$actual_minor \> $required_minor \| \
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$actual_major \= $required_major \& \
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$actual_minor \= $required_minor \& \
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$actual_patch \>= $required_patch `
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if test "$protoc_version_proper" = "1" ; then
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AC_MSG_RESULT([$protoc_version])
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else
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AC_MSG_ERROR([protoc version too old $protoc_version < $required]);
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fi
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fi
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])
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