27 lines
919 B
Diff
27 lines
919 B
Diff
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Enforce correct -march option
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Buildroot uses a normal ARM compiler to build the AM33X CM3 firmware
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(which runs on a Cortex-M3 processor), but Buildroot will have a
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default -march value that doesn't necessarily match the one needed for
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Cortex-M3, leading to build failures (gcc complains that the
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-mcpu=cortex-m3 option being passed is not compatible with the
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selected -march).
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Fix this by explicitly indicating -march=armv7-m.
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Index: b/Makefile
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===================================================================
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--- a/Makefile
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+++ b/Makefile
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@@ -13,7 +13,7 @@
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BINDIR = bin
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INCLUDES = $(SRCDIR)/include
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-CFLAGS =-mcpu=cortex-m3 -mthumb -nostdlib -Wall -g -I$(INCLUDES)
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+CFLAGS =-march=armv7-m -mcpu=cortex-m3 -mthumb -nostdlib -Wall -g -I$(INCLUDES)
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LDFLAGS =-nostartfiles -fno-exceptions -Tfirmware.ld
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EXECUTABLE=am335x-pm-firmware.elf
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