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#!/bin/sh
##
## checkheader.sh -- Check whether a C header file exists
## Initially written by Ralf S. Engelschall for the Apache
## configuration mechanism
##
#
# This script falls under the Apache License.
# See http://www.apache.org/docs/LICENSE
header=$1
rc=1
if [ "x$CPP" = "x" ]; then
CPP='NOT-AVAILABLE'
fi
if [ "x$CPP" != "xNOT-AVAILABLE" ]; then
# create a test C source
cat >conftest.c <<EOF
#include <$header>
Syntax Error
EOF
(eval "$CPP conftest.c >/dev/null") 2>conftest.out
my_error=`grep -v '^ *+' conftest.out`
if [ "x$my_error" = "x" ]; then
rc=0
fi
else
if [ -f "/usr/include/$header" ]; then
rc=0
fi
fi
rm -f conftest.*
exit $rc
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