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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-10-07 17:05:22 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-10-07 17:05:22 +0000
commit3240474c23bf4f47536a854693b4cbacb54b9b04 (patch)
tree7736932b581341b317aea5bd208f9e648e895055 /scripts
parente747f62ed69504825beb2c52b8f0448b3d3b72ed (diff)
downloadbusybox-3240474c23bf4f47536a854693b4cbacb54b9b04.tar.gz
busybox-3240474c23bf4f47536a854693b4cbacb54b9b04.tar.bz2
reviving libbusybox, adding CONFIG_INDIVIDUAL part 1
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/trylink97
1 files changed, 81 insertions, 16 deletions
diff --git a/scripts/trylink b/scripts/trylink
index 0b8f6c062..19b0ba715 100755
--- a/scripts/trylink
+++ b/scripts/trylink
@@ -3,24 +3,40 @@
debug=false
try() {
- added="$1"
- shift
- $debug && echo "Trying: $* $added"
- "$@" $added 2>busybox_ld.err
+ printf "%s\n" "Output of:" >$EXE.out
+ printf "%s\n" "$*" >>$EXE.out
+ printf "%s\n" "==========" >>$EXE.out
+ $debug && echo "Trying: $*"
+ "$@" >>$EXE.out 2>&1
+ exitcode=$?
+ cat $EXE.out
+ return $exitcode
}
+EXE="$1"
+CC="$2"
+LDFLAGS="$3"
+O_FILES="$4"
+A_FILES="$5"
+LDLIBS="$6"
+
# Sanitize lib list (dups, extra spaces etc)
-#echo "BBOX_LIB_LIST=$BBOX_LIB_LIST"
BBOX_LIB_LIST=`echo "$BBOX_LIB_LIST" | xargs -n1 | sort | uniq | xargs`
# First link with all libs. If it fails, bail out
echo "Trying libraries: $BBOX_LIB_LIST"
+# "lib1 lib2 lib3" -> "-llib1 -llib2 -llib3"
l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/' -e 's/^-l$//'`
test "x$l_list" != "x" && l_list="-Wl,--start-group $l_list -Wl,--end-group"
-try "$l_list" "$@" \
+try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
+ -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
+ $l_list \
+ >/dev/null \
|| {
- echo "Failed: $* -Wl,--start-group $l_list -Wl,--end-group"
- cat busybox_ld.err
+ echo "Failed: $* $l_list"
+ cat $EXE.out
exit 1
}
@@ -31,15 +47,22 @@ while test "$BBOX_LIB_LIST"; do
all_needed=true
for one in $BBOX_LIB_LIST; do
without_one=`echo " $BBOX_LIB_LIST " | sed "s/ $one / /g" | xargs`
+ # "lib1 lib2 lib3" -> "-llib1 -llib2 -llib3"
l_list=`echo "$without_one" | sed -e 's/ / -l/g' -e 's/^/-l/' -e 's/^-l$//'`
test "x$l_list" != "x" && l_list="-Wl,--start-group $l_list -Wl,--end-group"
$debug && echo "Trying -l options: '$l_list'"
- if try "$l_list" "$@"; then
- echo "Library $one is not needed"
- BBOX_LIB_LIST="$without_one"
- all_needed=false
+ try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
+ -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
+ $l_list \
+ >/dev/null
+ if test $? = 0; then
+ echo "Library $one is not needed"
+ BBOX_LIB_LIST="$without_one"
+ all_needed=false
else
- echo "Library $one is needed"
+ echo "Library $one is needed"
fi
done
# All libs were needed, can't remove any
@@ -56,13 +79,55 @@ l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/' -e 's/^-l$//'`
test "x$l_list" != "x" && l_list="-Wl,--start-group $l_list -Wl,--end-group -Wl,--verbose"
# --verbose gives us gobs of info to stdout (e.g. linker script used)
if ! test -f busybox_ldscript; then
- try "$l_list -Wl,--verbose" "$@" >busybox_ld.out
+ try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
+ -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
+ $l_list -Wl,--verbose \
+ >/dev/null
else
echo "Custom linker script 'busybox_ldscript' found, using it"
- # Add SORT_BY_ALIGNMENT to linker script (found in busybox_ld.out):
+ # Add SORT_BY_ALIGNMENT to linker script (found in ${EXE}_ld.out):
# .rodata : { *(.rodata SORT_BY_ALIGNMENT(.rodata.*) .gnu.linkonce.r.*) }
# *(.data SORT_BY_ALIGNMENT(.data.*) .gnu.linkonce.d.*)
# *(.bss SORT_BY_ALIGNMENT(.bss.*) .gnu.linkonce.b.*)
# This will eliminate most of the data padding (~3kb).
- try "$l_list -Wl,--verbose -Wl,-T -Wl,busybox_ldscript" "$@" >busybox_ld.out
+ try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
+ -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
+ $l_list -Wl,--verbose \
+ -Wl,-T -Wl,busybox_ldscript \
+ >/dev/null
fi
+
+mkdir 0lib 2>/dev/null
+test -d 0lib || exit 1
+ln -s libbusybox.so.1.8.0 0lib/libbusybox.so 2>/dev/null
+
+EXE="0lib/libbusybox.so.1.8.0"
+try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -shared -fPIC -Wl,--enable-new-dtags \
+ -Wl,--start-group -Wl,--whole-archive $A_FILES -Wl,--no-whole-archive -Wl,--end-group \
+ $l_list -Wl,--verbose \
+ -Wl,-soname="libbusybox.so.1.8.0" \
+ -Wl,-z,combreloc \
+ >/dev/null \
+|| {
+ echo "Linking $EXE failed"
+ exit 1
+}
+
+EXE="0lib/busybox"
+try $CC $LDFLAGS \
+ -o $EXE -Wl,-Map -Wl,$EXE.map \
+ -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
+ -Wl,--start-group $O_FILES -Wl,--end-group \
+ $l_list -Wl,--verbose \
+ -L"0lib" -lbusybox \
+ >/dev/null \
+|| {
+ echo "Linking $EXE failed"
+ exit 1
+}