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#!/bin/sh
# the arguments of this script are the compiler name and flags
# try to solve a chicken-and-egg problem on SunOS
# ucb's test program does not handle -L like the other test programs
# let's try to find another implementation
if test -x /bin/test; then
TEST=/bin/test;
else
if test -x /usr/bin/test; then
TEST=/usr/bin/test;
else
# cross your fingers that it's not like ucb test
TEST=test;
fi
fi
compiler=`echo $* | sed -e 's/-static//g' -e 's/-Bstatic//g'`
if $TEST `basename $1` = "gcc" && ($compiler -v) >/dev/null 2>&1 ; then
# Cygwin writes more than one line with "version" in it
gccversion=`$compiler -v 2>&1 | sed -e "/version/!d" | tail -n 1`
else
gccversion="$1"
fi
libcversion=`/lib/libc.so.6 | head -n 1`
if ($* hello.c -o hello) >/dev/null 2>&1; then
ldd_output=`(ldd hello) 2>&1`
libcversion=`echo $ldd_output | sed -e 's/.*static.*/static/' \
-e 's/.*not a dynamic.*/static/'`
if $TEST "$libcversion" = "static" ; then
if ($compiler hello.c -o hello) >/dev/null 2>&1; then
if (ldd hello) >/dev/null 2>/dev/null; then
libcversion=`(ldd hello) 2>&1`
libcversion=`echo $libcversion | sed -e '/libc/!d'\
-e 's/^[ ]*//' \
-e 's/.*=>[ ][ ]*\([^ ]*\).*/\1/'`
# remember the current directory
current=`pwd`
while $TEST -L "$libcversion" && ! $TEST "$libcversion" = "" ; do
libcitself=`basename $libcversion`
libpath=`echo $libcversion | sed -e "s/$libcitself$//"`
if $TEST -d "$libpath" ; then
cd $libpath
fi
if ls $libcitself >/dev/null 2>/dev/null ; then
libcversion=`ls -l $libcitself | \
sed -e 's/.*->[ ][ ]*\(.*\)$/\1/'`
else
# something must have gone wrong, let's bail out
libcversion=""
fi
done
# return to the current directory
cd $current
fi
fi
else
libcversion=""
fi
fi
rm -f sysinfo.crm sysinfo.c hello
# this bombs out on Ultrix which expect "cut -d"
compsystem=`uname -a | cut -b 1-78`
compdate=`date|cut -b1-55`
# let's hope that ctrl-c is not part of any string here
# this also will barf later if " is in any of the strings
sed -e "s%CCVERSION%$gccversion" -e "s%LIBCVERSION%$libcversion"\
-e "s%SYSTEM%$compsystem" -e "s%DATE%$compdate"\
sysinfo.c.template > sysinfo.c
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