diff options
| author | Dean Camera <dean@fourwalledcubicle.com> | 2014-08-26 21:18:59 +1000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2014-08-26 21:18:59 +1000 |
| commit | d0a147f5bbcd59a9f01b7bedcf7c4be92f059b35 (patch) | |
| tree | d2194a0fcbf8f40dfa280c94b2cc79c90b5b65c6 /LUFA/Build | |
| parent | 0fd7b2cf09c9088646080a911f0840348e566577 (diff) | |
| download | lufa-d0a147f5bbcd59a9f01b7bedcf7c4be92f059b35.tar.gz lufa-d0a147f5bbcd59a9f01b7bedcf7c4be92f059b35.tar.bz2 lufa-d0a147f5bbcd59a9f01b7bedcf7c4be92f059b35.zip | |
Patched the LUFA build system to work around a GCC code generation bug in newer toolchains when building for larger FLASH memory devices (thanks to demultiplexer)
Diffstat (limited to 'LUFA/Build')
| -rw-r--r-- | LUFA/Build/lufa_build.mk | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/LUFA/Build/lufa_build.mk b/LUFA/Build/lufa_build.mk index 1bdfa1d72..b9b144aee 100644 --- a/LUFA/Build/lufa_build.mk +++ b/LUFA/Build/lufa_build.mk @@ -199,6 +199,12 @@ ifeq ($(LINKER_RELAXATIONS), Y) BASE_CC_FLAGS += -mrelax endif +# This flag is required for bootloaders as GCC will emit invalid jump table +# assembly code for devices with large amounts of flash; the jump table target +# is extracted from FLASH without using the correct ELPM instruction, resulting +# in a pseudo-random jump target. +BASE_CC_FLAGS += -fno-jump-tables + # Additional language specific compiler flags BASE_C_FLAGS := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD) |