blob: 0b57319d6e66e21ffd42ec56c8127f76b82c84e9 [file] [log] [blame]
#!/bin/sh
test -f $PLAN9/config && . $PLAN9/config
libsl=""
frameworks=""
doautolib=true
doautoframework=true
verbose=false
nmflags=""
extralibs="-lm"
tag="${SYSNAME:-`uname`}-${OBJTYPE:-`uname -m`}"
case "$tag" in
*FreeBSD*)
ld=${CC9:-gcc}
userpath=true
extralibs="$extralibs -lutil"
case "`uname -r`" in
5.2.*)
extralibs="$extralibs -lkse"
;;
[5-9].*)
extralibs="$extralibs -lpthread"
;;
esac
;;
*DragonFly*|*BSD*)
ld=${CC9:-gcc}
userpath=true
extralibs="$extralibs -lutil"
;;
*OSF1*)
ld=${CC9:-cc}
userpath=true
extralibs="$extralibs -lutil"
nmflags="-B"
;;
*Linux*)
ld=${CC9:-gcc}
userpath=true
extralibs="$extralibs -lutil -lresolv"
case "${SYSVERSION:-`uname -r`}" in
2.6.* | 3.*)
extralibs="$extralibs -lpthread"
;;
esac
;;
*Darwin*x86_64*)
ld="${CC9:-gcc} -m64"
;;
*Darwin*)
ld="${CC9:-gcc} -m32"
;;
*SunOS*)
ld="${CC9:-cc} -g"
extralibs="$extralibs -lrt -lpthread -lsocket -lnsl"
# Record paths to shared libraries to avoid needing LD_LIBRARY_PATH
for i in "$libsl $@"
do
case "$i" in
-L*)
s=`echo $i | sed 's/-L/-R/'`
extralibs="$extralibs $s"
;;
esac
done
case "${SYSVERSION:-`uname -r`}" in
5.[67])
echo do not know how to link right thread library on "$tag" 1>&2
;;
5.8)
# Some trickery is needed to force use of
# alternate thread lib from /usr/lib/lwp
# Likely, this only works with sun cc,
# for other compiler/loader we would need other flags.
ld="$ld -i"
extralibs="$extralibs /usr/lib/lwp/libthread.so -R/usr/lib/lwp:/usr/lib"
;;
esac
;;
*AIX*)
ld=${CC9:-gcc}
nmflags="-B"
;;
*)
echo do not know how to link on "$tag" 1>&2
exit 1
esac
if [ "x$1" = "x-l" ]
then
shift
doautolib=false
doautoframework=false
elif [ "x$1" = "x-v" ]
then
shift
verbose=true
fi
target=a.out
if [ "x$1" = "x-o" ]
then
target=$2
fi
if $doautolib
then
ofiles=""
lpaths="$PLAN9/lib"
for i
do
case "$i" in
*.[ao])
ofiles="$ofiles $i"
;;
-L*)
l=`echo $i | sed 's/-L//'`
lpaths="$lpaths $l"
esac
done
if $verbose
then
echo "ofiles $ofiles"
echo "lpaths $lpaths"
fi
autolibs=""
if [ "x$ofiles" != "x" ]
then
a=`
nm $nmflags $ofiles |
grep '__p9l_autolib_[a-zA-Z0-9+-]*$' |
sed 's/.*__p9l_autolib_//' |
sort -u
`
for i in $a
do
autolibs="$autolibs $i"
eval "need$i=true"
done
fi
if $verbose
then
echo "autolibs1 $autolibs"
fi
# fetch dependencies out of libraries
workq="$autolibs"
while [ "x$workq" != "x" ]
do
w="$workq"
workq=""
for i in $w
do
# can't trust the libraries about using
# libthread or libdraw - we might not be linking with
# those object files.
a=""
for lpath in $lpaths
do
b=`
nm $lpath/lib$i.a 2>/dev/null |
grep '__p9l_autolib_[a-zA-Z0-9+-]*$' |
sed 's/.*__p9l_autolib_//' |
sort -u |
egrep -v '^(thread|draw)$'
`
a="$a $b"
done
# fix up libraries that really need draw
if [ "x$i" = "xmemdraw" -o "x$i" = "xmemlayer" -o "x$i" = "xframe" ]
then
a="$a draw"
fi
okayfn="true"
for j in $a
do
if eval "[ x\$need$j = x ]"
then
autolibs="$autolibs $j"
workq="$workq $j"
eval "need$j=true"
fi
if [ $j != $i ]
then
okayfn="$okayfn && have$j"
fi
done
if $verbose
then
echo "can$i: $okayfn"
fi
eval "can$i() { $okayfn; }"
done
done
if $verbose
then
echo "autolibs $autolibs"
fi
for i in $autolibs
do
eval "have$i() { false; }"
done
havethread() { false; }
havesec() { false; }
canmemlayer() { havedraw; }
# now find correct order
libsl=""
while [ "x$autolibs" != x ]
do
stillneed=""
didnothing=true
for i in $autolibs
do
if eval "can$i"
then
libsl="-l$i $libsl"
eval "have$i() { true; }"
didnothing=false
else
stillneed="$stillneed $i"
fi
done
# break cycle by setting the last library on the list
# to have no dependencies
if $didnothing
then
j="xxx"
for i in $autolibs
do
j=$i
done
echo "dependency cycle: $autolibs; breaking with $j"
eval "can$j() { true; }"
fi
autolibs="$stillneed"
done
if $verbose
then
echo "liborder $libsl"
fi
libsl="$libsl -l9"
# cycle: lib9 expects p9main, which is defined in libthread. oops.
if havethread
then
libsl="$libsl -lthread -l9"
fi
# cycle: lib9 netcrypt uses libsec
if havesec
then
libsl="$libsl -lsec -l9"
fi
if [ "x$needndb" = xtrue -a '(' -f /usr/lib/libresolv.a -o -f /usr/lib/libresolv.dylib ')' ]
then
libsl="$libsl -lresolv"
fi
if [ "x$needX11" = xtrue -a "x$WSYSTYPE" != xnowsys ]
then
if [ "x$X11" = "x" ]
then
X11=/usr/X11R6
fi
# Don't say -L with a non-existent directory: Xcode complains.
# x86_64 seems to put its 64-bit libraries in lib64.
if [ "${OBJTYPE:-`uname -m`}" = "x86_64" -a -d "$X11/lib64" ]
then
libsl="$libsl -L$X11/lib64"
fi
if [ -d "$X11/lib" ]
then
libsl="$libsl -L$X11/lib"
fi
libsl="$libsl -lX11"
fi
fi
if $doautoframework
then
ofiles=""
for i
do
case "$i" in
*.[ao])
ofiles="$ofiles $i"
;;
esac
done
# echo "ofiles $ofiles"
autoframeworks=""
if [ "x$ofiles" != "x" ]
then
a=`
nm $ofiles |
grep '__p9l_autoframework_[a-zA-Z0-9+-]*$' |
sed 's/.*__p9l_autoframework_//' |
sort -u
`
for i in $a
do
autoframeworks="$autoframeworks $i"
eval "need$i=true"
done
fi
if $verbose
then
echo "autoframeworks $autoframeworks"
fi
for i in $autoframeworks
do
eval "have$i() { false; }"
done
frameworks=""
for i in $autoframeworks
do
frameworks="-framework $i $frameworks"
done
fi
case "$userpath" in
true)
for i in "$libsl $@"
do
case "$i" in
-L*)
s=`echo $i | sed 's/-L/-Wl,-rpath,/'`
extralibs="$extralibs $s"
;;
esac
done
;;
esac
if $verbose
then
echo $ld -L$PLAN9/lib "$@" $libsl $extralibs $frameworks
fi
xtmp=/tmp/9l.$$.$USER.out
xxout() {
sed 's/.*: In function `[^:]*: *//' $xtmp | egrep . |
egrep -v 'is (often|almost always) misused|is dangerous, better use'
rm -f $xtmp
}
if $ld -L$PLAN9/lib "$@" $libsl $extralibs $frameworks >$xtmp 2>&1
then
xxout
exit 0
else
xxout
rm -f $target
exit 1
fi