armcm_link: Fix build on recent arm gcc/newlibc versions

It seems recent arm gcc versions no longer build correctly using the "--specs=nano.specs --specs=nosys.specs" linker flags. Replace those linker flags with "-nostdlib -lgcc -lc_nano". Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
DangerKlippers · Jul 4, 2024 · 4f0e972 · 4f0e972
1 parent 82364d4
commit 4f0e972
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Showing 8 changed files with 14 additions and 9 deletions.
diff --git a/src/atsam/Makefile b/src/atsam/Makefile
@@ -20,7 +20,7 @@ CFLAGS-$(CONFIG_MACH_SAM4E) += -Ilib/sam4e/include
 CFLAGS-$(CONFIG_MACH_SAME70) += -Ilib/same70b/include
 CFLAGS += $(CFLAGS-y) -D__$(MCU)__ -mthumb -Ilib/cmsis-core -Ilib/fast-hash
 
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
 CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
 $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
 

diff --git a/src/atsamd/Makefile b/src/atsamd/Makefile
@@ -14,7 +14,7 @@ CFLAGS-$(CONFIG_MACH_SAME51) += -Ilib/same51/include
 CFLAGS-$(CONFIG_MACH_SAMX5) += -mcpu=cortex-m4 -Ilib/same54/include
 CFLAGS += $(CFLAGS-y) -D__$(MCU)__ -mthumb -Ilib/cmsis-core -Ilib/fast-hash
 
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
 CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
 $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
 

diff --git a/src/generic/armcm_link.lds.S b/src/generic/armcm_link.lds.S
@@ -69,5 +69,8 @@ SECTIONS
         // that isn't needed so no need to include them in the binary.
         *(.init)
         *(.fini)
+        // Don't include exception tables
+        *(.ARM.extab)
+        *(.ARM.exidx)
     }
 }
diff --git a/src/hc32f460/Makefile b/src/hc32f460/Makefile
@@ -7,7 +7,7 @@ dirs-y += src/hc32f460 src/generic lib/hc32f460/driver/src lib/hc32f460/mcu/comm
 
 CFLAGS += -mthumb -mcpu=cortex-m4 -Isrc/hc32f460 -Ilib/hc32f460/driver/inc -Ilib/hc32f460/mcu/common -Ilib/cmsis-core -DHC32F460
 
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
 CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
 $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
 

diff --git a/src/lpc176x/Makefile b/src/lpc176x/Makefile
@@ -7,7 +7,7 @@ dirs-y += src/lpc176x src/generic lib/lpc176x/device
 
 CFLAGS += -mthumb -mcpu=cortex-m3 -Ilib/lpc176x/device -Ilib/cmsis-core
 
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
 CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
 $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
 

diff --git a/src/rp2040/Makefile b/src/rp2040/Makefile
@@ -46,7 +46,6 @@ $(OUT)klipper.uf2: $(OUT)klipper.elf $(OUT)lib/rp2040/elf2uf2/elf2uf2
 	$(Q)$(OUT)lib/rp2040/elf2uf2/elf2uf2 $< $@
 
 rptarget-$(CONFIG_RP2040_HAVE_STAGE2) := $(OUT)klipper.uf2
-rplink-$(CONFIG_RP2040_HAVE_STAGE2) := $(OUT)src/rp2040/rp2040_link.ld
 stage2-$(CONFIG_RP2040_HAVE_STAGE2) := $(OUT)stage2.o
 
 # rp2040 building when using a bootloader
@@ -55,13 +54,13 @@ $(OUT)klipper.bin: $(OUT)klipper.elf
 	$(Q)$(OBJCOPY) -O binary $< $@
 
 rptarget-$(CONFIG_RP2040_HAVE_BOOTLOADER) := $(OUT)klipper.bin
-rplink-$(CONFIG_RP2040_HAVE_BOOTLOADER) := $(OUT)src/rp2040/rp2040_link.ld
 
 # Set klipper.elf linker rules
 target-y += $(rptarget-y)
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs -T $(rplink-y)
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
+CFLAGS_klipper.elf += -T $(OUT)src/rp2040/rp2040_link.ld
 OBJS_klipper.elf += $(stage2-y)
-$(OUT)klipper.elf: $(stage2-y) $(rplink-y)
+$(OUT)klipper.elf: $(stage2-y) $(OUT)src/rp2040/rp2040_link.ld
 
 # Flash rules
 lib/rp2040_flash/rp2040_flash:

diff --git a/src/rp2040/rp2040_link.lds.S b/src/rp2040/rp2040_link.lds.S
@@ -77,5 +77,8 @@ SECTIONS
         // that isn't needed so no need to include them in the binary.
         *(.init)
         *(.fini)
+        // Don't include exception tables
+        *(.ARM.extab)
+        *(.ARM.exidx)
     }
 }
diff --git a/src/stm32/Makefile b/src/stm32/Makefile
@@ -32,7 +32,7 @@ CFLAGS-$(CONFIG_MACH_STM32L4) += -mcpu=cortex-m4 -Ilib/stm32l4/include
 CFLAGS-$(CONFIG_MACH_AT32F403) = -mcpu=cortex-m4 -Ilib/stm32f1/include
 CFLAGS += $(CFLAGS-y) -D$(MCU_UPPER) -mthumb -Ilib/cmsis-core -Ilib/fast-hash
 
-CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -nostdlib -lgcc -lc_nano
 CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
 $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld