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[efi] Fix .efi and .efidrv linking

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The linker chooses to look for _start first and always picks
efidrvprefix.o to satisfy it (probably because it's earlier in the
archive) which causes a multiple definition error when the linker
later has to pick efiprefix.o for other symbols.

Fix by using EFI-specific TGT_LD_FLAGS with an explicit entry point.

Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Joshua Oreman <oremanj@rwcr.net>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Piotr Jaroszyński
2010-03-30 18:18:43 +02:00
committed by Michael Brown
parent 7c6d3752c9
commit c68839d4d6
5 changed files with 10 additions and 7 deletions
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4
src/arch/x86/Makefile.efi
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@@ -13,6 +13,10 @@ LDFLAGS += -q -S
NON_AUTO_MEDIA += efi
NON_AUTO_MEDIA += efidrv
# Specify entry point
#
TGT_LD_FLAGS_PRE = -e _$(TGT_PREFIX)_start
# Rules for building EFI files
#
$(BIN)/%.efi : $(BIN)/%.efi.tmp $(ELF2EFI)