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#!/bin/sh
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# This is a quick'n'dirty hack to make the program behave correctly
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# under different systems.
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# Example:
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# when using libc5, (f)trucate's offset argument type is size_t with
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# libc5, but it's off_t with libc6 (glibc2).
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#
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# Uhm... time to learn GNU autoconf :-)
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#
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# $Header$
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OUTFILE='localdecls.h'
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# if your arch needs to dlopen() glibc, add it here separated by space :]
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BROKEN_RTLD_ARCHLIST="mips"
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echo '/* This file is automatically generated *' > $OUTFILE
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echo ' * Modify create-localdecls instead of this */' >> $OUTFILE
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echo >> $OUTFILE
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echo '#ifndef __LOCALDECLS_H_' >> $OUTFILE
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echo '#define __LOCALDECLS_H_' >> $OUTFILE
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echo >> $OUTFILE
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###
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###
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###
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echo -n 'Checking truncate argument type... '
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if grep -q 'truncate.*size_t' /usr/include/unistd.h ; then
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echo 'size_t'
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echo '#define TRUNCATE_T size_t' >> $OUTFILE
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else
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echo 'off_t' # At least, I HOPE it's off_t :-)
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echo '#define TRUNCATE_T off_t' >> $OUTFILE
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fi
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###
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###
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###
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echo -n 'Checking libc version... '
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gcc -Wall -o libctest libctest.c
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VERSION=`ldd libctest | grep libc\\.so | grep -v 'ld-uClibc' | awk '{print $1}'`
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echo $VERSION
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echo "#define LIBC_VERSION \"$VERSION\"" >> $OUTFILE
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if test "$VERSION" = 'libc.so.5' ; then
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echo '#define BROKEN_RTLD_NEXT' >> $OUTFILE
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echo '#define LIBC 5' >> $OUTFILE
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else
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# for the arch's that need to dlopen() libc to fetch real funcs!
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# 16.12.02 -Torgeir Hansen <torgeir@trenger.ro>
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MYARCH=`/bin/uname -m`
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for x in $BROKEN_RTLD_ARCHLIST; do
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if [ $x = $MYARCH ]; then
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echo '#define BROKEN_RTLD_NEXT' >> $OUTFILE
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fi
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done
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fi
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if test "$VERSION" = 'libc.so.6' ; then
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echo -n 'Checking glibc subversion...'
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tmp="$(ldd libctest 2>/dev/null | grep libc.so 2>/dev/null | head -n 1)"
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LibcPath=`expr "$tmp" : '[^/]*\(/[^ ]*\)'`
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tmp="`strings $LibcPath | grep -i 'c library'`"
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OsLibcMajor=`expr "$tmp" : '.* \([0-9][0-9]*\)'`
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OsLibcMinor=`expr "$tmp" : '.* [0-9][0-9]*\.\([0-9][0-9]*\)'`
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echo " ${OsLibcMajor}.${OsLibcMinor}"
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case "$OsLibcMajor" in
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2)
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# 2 is the glibc version
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case "$OsLibcMinor" in
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0)
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echo '#define GLIBC_MINOR 0' >> $OUTFILE
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SUBVERSION='glibc-2.0' ;;
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1)
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echo '#define GLIBC_MINOR 1' >> $OUTFILE
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SUBVERSION='glibc-2.1' ;;
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2)
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echo '#define GLIBC_MINOR 2' >> $OUTFILE
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SUBVERSION='glibc-2.2' ;;
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3)
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echo '#define GLIBC_MINOR 3' >> $OUTFILE
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SUBVERSION='glibc-2.3' ;;
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*)
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echo 'Treated as glibc >= 2.1 (finger crossed)'
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echo '#define GLIBC_MINOR 1' >> $OUTFILE
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SUBVERSION='glibc-2.1' ;;
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esac
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;;
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esac
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fi
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rm libctest
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echo '
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#ifdef PATH_MAX
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# define SB_PATH_MAX PATH_MAX * 2
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# if (SB_PATH_MAX >= INT_MAX) || (SB_PATH_MAX < PATH_MAX)
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# undef SB_PATH_MAX
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# define SB_PATH_MAX PATH_MAX + 25
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# if (SB_PATH_MAX >= INT_MAX) || (SB_PATH_MAX < PATH_MAX)
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# error SB_PATH_MAX too big!
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# endif
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# endif
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#else
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# error PATH_MAX not defined!
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#endif' >> $OUTFILE
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echo >> $OUTFILE
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echo '#endif' >> $OUTFILE
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echo
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