[linux] Allow a sysroot to be specified via SYSROOT=...

The cross-compiler will typically use the appropriate sysroot
directory automatically.  This may not work for toolchains where a
single cross-compiler is used to produce output for multiple CPU
variants (e.g. 32-bit and 64-bit RISC-V).

Add a SYSROOT=... parameter that may be used to specify the relevant
sysroot directory, e.g.

 make CROSS=riscv64-linux-gnu- SYSROOT=/usr/riscv32-linux-gnu/sys-root \
      bin-riscv32-linux/tests.linux

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2024-09-15 02:07:45 +01:00
parent 670810bed8
commit 68db9a3cb3

View File

@ -29,6 +29,9 @@ NON_AUTO_MEDIA = linux
# Compiler flags for building host API wrapper
#
LINUX_CFLAGS += -Os -idirafter include -DSYMBOL_PREFIX=$(SYMBOL_PREFIX)
ifneq ($(SYSROOT),)
LINUX_CFLAGS += --sysroot=$(SYSROOT)
endif
# Check for libslirp
#