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150d2fa114
specified libs, and if it succeeds, we try to remove them one-by-one. If link succeeds, then library is thrown out. Should solve the problem with SELinux linking in libsepol even when not needed.
55 lines
1.7 KiB
Bash
Executable File
55 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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debug=false
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try() {
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added="$1"
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shift
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$debug && echo "Trying: $* $added"
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"$@" $added >busybox.map 2>busybox_ld.err
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}
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# Sanitize lib list (dups, extra spaces etc)
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#echo "BBOX_LIB_LIST=$BBOX_LIB_LIST"
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BBOX_LIB_LIST=`echo "$BBOX_LIB_LIST" | xargs -n1 | sort | uniq | xargs`
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# First link with all libs. If it fails, bail out
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l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/'`
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echo "Trying libraries: $BBOX_LIB_LIST"
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try "-Wl,--start-group $l_list -Wl,--end-group" "$@" \
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|| {
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echo "Failed: $* -Wl,--start-group $l_list -Wl,--end-group"
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cat busybox_ld.err
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exit 1
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}
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# Now try to remove each lib and build without.
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# Stop when no lib can be removed.
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while test "$BBOX_LIB_LIST"; do
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$debug && echo "Trying libraries: $BBOX_LIB_LIST"
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all_needed=true
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for one in $BBOX_LIB_LIST; do
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without_one=`echo " $BBOX_LIB_LIST " | sed "s/ $one / /g" | xargs`
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l_list=`echo "$without_one" | sed -e 's/ / -l/g' -e 's/^/-l/'`
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$debug && echo "Trying -l options: $l_list"
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if try "-Wl,--start-group $l_list -Wl,--end-group" "$@"; then
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echo "Library $one is not needed"
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BBOX_LIB_LIST="$without_one"
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all_needed=false
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else
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echo "Library $one is needed"
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fi
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done
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# All libs were needed, can't remove any
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$all_needed && break
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# If there is no space, the list has just one lib.
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# I'm not sure that in this case lib really is 100% needed.
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# Let's try linking without it anyway... thus commented out.
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#echo "$BBOX_LIB_LIST" | grep -q ' ' || break
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done
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# Ok, make the binary
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echo "Final link with: $BBOX_LIB_LIST"
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l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/'`
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try "-Wl,--start-group $l_list -Wl,--end-group" "$@"
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