diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/trylink | 58 |
1 files changed, 23 insertions, 35 deletions
diff --git a/scripts/trylink b/scripts/trylink index 4eaa334..0b8f6c0 100755 --- a/scripts/trylink +++ b/scripts/trylink @@ -14,37 +14,30 @@ try() { BBOX_LIB_LIST=`echo "$BBOX_LIB_LIST" | xargs -n1 | sort | uniq | xargs` # First link with all libs. If it fails, bail out -l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/'` echo "Trying libraries: $BBOX_LIB_LIST" -try "-Wl,--start-group $l_list -Wl,--end-group" "$@" \ +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" "$@" \ || { echo "Failed: $* -Wl,--start-group $l_list -Wl,--end-group" cat busybox_ld.err exit 1 } -#### Hack disabled: conflicts with ld --verbose flag in last link phase - -##### Hack: we are not supposed to know executable name, -##### but this hack cuts down link time -####mv busybox_unstripped busybox_unstripped.tmp -####mv busybox.map busybox.map.tmp - # Now try to remove each lib and build without it. # Stop when no lib can be removed. -####ever_discarded=false while test "$BBOX_LIB_LIST"; do $debug && echo "Trying libraries: $BBOX_LIB_LIST" all_needed=true for one in $BBOX_LIB_LIST; do without_one=`echo " $BBOX_LIB_LIST " | sed "s/ $one / /g" | xargs` - l_list=`echo "$without_one" | sed -e 's/ / -l/g' -e 's/^/-l/'` - $debug && echo "Trying -l options: $l_list" - if try "-Wl,--start-group $l_list -Wl,--end-group" "$@"; then + 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 -#### ever_discarded=true else echo "Library $one is needed" fi @@ -57,24 +50,19 @@ while test "$BBOX_LIB_LIST"; do #{ echo "$BBOX_LIB_LIST" | grep -q ' '; } || break done -####mv busybox_unstripped.tmp busybox_unstripped -####mv busybox.map.tmp busybox.map -####$ever_discarded && { - # Make the binary with final, minimal list of libs - echo "Final link with: $BBOX_LIB_LIST" - l_list=`echo "$BBOX_LIB_LIST" | sed -e 's/ / -l/g' -e 's/^/-l/'` - # --verbose gives us gobs of info to stdout (e.g. linker script used) - if ! test -f busybox_ldscript; then - try "-Wl,--start-group $l_list -Wl,--end-group -Wl,--verbose" "$@" >busybox_ld.out ####|| exit 1 - else - echo "Custom linker script 'busybox_ldscript' found, using it" - # Add SORT_BY_ALIGNMENT to linker script (found in busybox_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 "-Wl,--start-group $l_list -Wl,--end-group -Wl,--verbose -Wl,-T -Wl,busybox_ldscript" "$@" >busybox_ld.out - fi -####} -####rm busybox_ld.err -####exit 0 # Ensure "success" exit code +# Make the binary with final, minimal list of libs +echo "Final link with: $BBOX_LIB_LIST" +l_list=`echo "$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" "$@" >busybox_ld.out +else + echo "Custom linker script 'busybox_ldscript' found, using it" + # Add SORT_BY_ALIGNMENT to linker script (found in busybox_ld.out): + # .rodata : { *(.rodata SORT_BY_ALIGNMENT(.rodata.*) .gnu.linkonce.r.*) } + # *(.data SORT_BY_ALIGNMENT(.data.*) .gnu.linkonce.d.*) + # *(.bss SORT_BY_ALIGNMENT(.bss.*) .gnu.linkonce.b.*) + # This will eliminate most of the data padding (~3kb). + try "$l_list -Wl,--verbose -Wl,-T -Wl,busybox_ldscript" "$@" >busybox_ld.out +fi |