diff options
| author | Sean Cross <[email protected]> | 2019-11-13 09:26:00 -0800 |
|---|---|---|
| committer | Sean Cross <[email protected]> | 2019-11-13 09:26:00 -0800 |
| commit | dce070ebe0ab95a8a87f5be2a0696ec58a749ab0 (patch) | |
| tree | 050a483f8a7bc8f1dc11f7cf9a5a1aa09b397189 /examples/make.mk | |
| parent | 737d437ab8d8159330cd4e08f639bd2cdac7d2f8 (diff) | |
examples: make: specify CROSS_COMPILE for fomu
When BOARD=fomu, use the riscv cross-compiler. Otherwise, use the
default arm compiler. This can be overridden by passing
CROSS_COMIPLE on the command line.
Note that there are now three common risc-v prefixes:
- riscv32-unknown-elf- : Common for users who compile their own
- riscv64-unknown-elf- : Upstream multiarch toolchain from SiFive
- riscv-none-embed- : xPack embedded version of SiFive toolchain
Here we assume users are using the `riscv-none-embed-` toolchain from
xPack, because it appears to be growing more common. Additionally,
there is much confusion surrounding `riscv64-unknown-elf-`, which
actually includes both 32- and 64-bit runtimes and can generate software
for both.
Signed-off-by: Sean Cross <[email protected]>
Diffstat (limited to 'examples/make.mk')
| -rw-r--r-- | examples/make.mk | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/examples/make.mk b/examples/make.mk index c2e0559fb..5bb556870 100644 --- a/examples/make.mk +++ b/examples/make.mk @@ -2,8 +2,12 @@ # Common make definition for all examples # -# Compiler +# Compiler +ifeq ($(BOARD), fomu) +CROSS_COMPILE = riscv-none-embed- +else CROSS_COMPILE = arm-none-eabi- +endif CC = $(CROSS_COMPILE)gcc CXX = $(CROSS_COMPILE)g++ OBJCOPY = $(CROSS_COMPILE)objcopy |