From: Simon Glass <sjg@chromium.org> Sometimes it is more convenient to link an application directly with a static library. Add build rules to create libu-boot.a as a static library alongside the existing shared library (libu-boot.so). The static library is a fat archive containing all U-Boot object files except for arch/sandbox/cpu/main.o since it contains main(). A temporary thin archive is used to collect all the objects. Co-developed-by: Claude <noreply@anthropic.com> Signed-off-by: Simon Glass <sjg@chromium.org> --- Makefile | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Makefile b/Makefile index 1a378ebbee3..bf571de9f06 100644 --- a/Makefile +++ b/Makefile @@ -1046,6 +1046,7 @@ INPUTS-$(CONFIG_X86) += u-boot-x86-start16.bin u-boot-x86-reset16.bin \ ifdef CONFIG_CMDLINE ifneq ($(cc-name),clang) INPUTS-$(CONFIG_ULIB) += libu-boot.so test/ulib/ulib_test +INPUTS-$(CONFIG_ULIB) += libu-boot.a endif endif @@ -1869,6 +1870,20 @@ libu-boot.so: $(u-boot-init) $(u-boot-main) $(u-boot-keep-syms-lto) \ $(LIB_LDS) FORCE $(call if_changed,libu-boot.so) +# Build U-Boot as a static library +# Create a fat archive with all object files (except arch/sandbox/cpu/main.o) +# Avoid partial linking so as to preserve the linker-list sections +quiet_cmd_libu-boot.a = AR $@ + cmd_libu-boot.a = rm -f $@ $@.tmp $@.objlist; \ + $(AR) rcT $@.tmp $(u-boot-init) $(u-boot-main) \ + $(u-boot-keep-syms-lto); \ + $(AR) t $@.tmp | grep -v "arch/sandbox/cpu/main\.o$$" > $@.objlist; \ + cat $@.objlist | xargs $(AR) rcs $@; \ + rm -f $@.tmp $@.objlist + +libu-boot.a: $(u-boot-init) $(u-boot-main) $(u-boot-keep-syms-lto) FORCE + $(call if_changed,libu-boot.a) + # Build ulib_test that links with shared library quiet_cmd_ulib_test = HOSTCC $@ cmd_ulib_test = $(HOSTCC) $(HOSTCFLAGS) \ -- 2.43.0