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Fix ARM compilation on Debian Forky & the new picolibc replacing newlib.

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Debian Forky's gcc-arm-none-eabi uses picolibc as the default C library, replacing the old newlib-nano.
Picolibc registers itself with GCC via a .specs file.
That specs file automatically injects its own picolibc.ld into every link step — unless GCC sees a user-supplied -T flag at the GCC driver level.
https://github.com/picolibc/picolibc/blob/main/doc/linking.md
This commit is contained in:
Philippe Teuwen
2026-04-28 12:15:20 +02:00
parent 8ff8479c18
commit 294b656af1
2 changed files with 4 additions and 2 deletions
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armsrc/Makefile
+2 -1
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@@ -214,7 +214,8 @@ $(FPGA_COMPRESSOR):
$(OBJDIR)/fullimage.stage1.elf: $(VERSIONOBJ) $(OBJDIR)/fpga_all.o $(THUMBOBJ) $(ARMOBJ)
$(info [=] LD $@)
$(Q)$(CROSS_LD) $(CROSS_LDFLAGS) -Wl,-T,ldscript,-Map,$(patsubst %.elf,%.map,$@) -o $@ $^ $(LIBS)
# Using -T instead of -Wl,-T is needed to prevent the linker from using the default ldscript when using picolibc instead of newlib
$(Q)$(CROSS_LD) $(CROSS_LDFLAGS) -T ldscript -Wl,-Map,$(patsubst %.elf,%.map,$@) -o $@ $^ $(LIBS)
$(OBJDIR)/fullimage.data.bin: $(OBJDIR)/fullimage.stage1.elf
$(info [-] GEN $@)
bootrom/Makefile
+2 -1
View File
@@ -69,7 +69,8 @@ tarbin: $(OBJS)
$(OBJDIR)/bootrom.elf: $(VERSIONOBJ) $(ASMOBJ) $(ARMOBJ) $(THUMBOBJ)
$(info [=] LD $@)
$(Q)$(CROSS_LD) $(CROSS_LDFLAGS) -Wl,-T,ldscript-flash,-Map,$(patsubst %.elf,%.map,$@) -o $@ $^ $(LIBS)
# Using -T instead of -Wl,-T is needed to prevent the linker from using the default ldscript when using picolibc instead of newlib
$(Q)$(CROSS_LD) $(CROSS_LDFLAGS) -T ldscript-flash -Wl,-Map,$(patsubst %.elf,%.map,$@) -o $@ $^ $(LIBS)
clean:
$(Q)$(RM) $(OBJDIR)$(PATHSEP)*.o