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Revert "Create libgcc_stripped with llvm-objcopy" 

We rely on a weird, GNU specific behaviour of objcopy:

$ aarch64-linux-android-objcopy -w libgcc.a stripped.a --strip-unneeded-symbol=*
$ llvm-nm --defined-only stripped.a | grep multi
0000000000000000 T __multi3

$ aarch64-linux-android-objcopy -w libgcc.a stripped.a --strip-unneeded-symbol=* --keep-symbol=FOO
$ llvm-nm --defined-only stripped.a | grep multi

llvm-objcopy has a different, more consistent behaviour that does not
mark exported symbols as unneeded when "--keep-symbol" flag exists.
However this behaviour will leave most symbols not deleted in the
libgcc_stripped library.

Revert the change while I'm implementing an alternative solution.

Test: presubmit
Bug: 142585047
Change-Id: I175e811f8a1f6afc6558267fc54e159ad5e12acf
This commit is contained in:
Yi Kong 2019-10-15 16:35:51 -07:00
parent 5ac191f51f
commit 049ae6ae3e
1 changed files with 2 additions and 2 deletions
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4
scripts/strip.sh
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@ -67,9 +67,9 @@ do_strip_keep_symbols() {
do_strip_keep_symbol_list() {
echo "${symbols_to_keep}" | tr ',' '\n' > "${outfile}.symbolList"
KEEP_SYMBOLS="--strip-unneeded-symbol=.* --keep-symbols="
KEEP_SYMBOLS="--strip-unneeded-symbol=* --keep-symbols="
KEEP_SYMBOLS+="${outfile}.symbolList"
"${CLANG_BIN}/llvm-objcopy" --regex "${infile}" "${outfile}.tmp" ${KEEP_SYMBOLS}
"${CROSS_COMPILE}objcopy" -w "${infile}" "${outfile}.tmp" ${KEEP_SYMBOLS}
}
do_strip_keep_mini_debug_info() {