diff options
| author | Austin Clements <[email protected]> | 2010-08-31 15:01:26 -0400 |
|---|---|---|
| committer | Austin Clements <[email protected]> | 2010-08-31 15:01:26 -0400 |
| commit | 0f0456ec53d2739282eccf62b22f7c933d7cbae5 (patch) | |
| tree | 79a5e16320981ab3c76dcfbb2e44da8f5b41c1a2 | |
| parent | 7d7dc9331bf33f77c9c3a71350782dadae8dd371 (diff) | |
| download | xv6-labs-0f0456ec53d2739282eccf62b22f7c933d7cbae5.tar.gz xv6-labs-0f0456ec53d2739282eccf62b22f7c933d7cbae5.tar.bz2 xv6-labs-0f0456ec53d2739282eccf62b22f7c933d7cbae5.zip | |
Infer TOOLPREFIX, just like in JOS
| -rw-r--r-- | Makefile | 18 |
1 files changed, 17 insertions, 1 deletions
@@ -28,11 +28,27 @@ OBJS = \ vm.o\ # Cross-compiling (e.g., on Mac OS X) -TOOLPREFIX = i386-jos-elf- +#TOOLPREFIX = i386-jos-elf- # Using native tools (e.g., on X86 Linux) #TOOLPREFIX = +# Try to infer the correct TOOLPREFIX if not set +ifndef TOOLPREFIX +TOOLPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \ + then echo 'i386-jos-elf-'; \ + elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \ + then echo ''; \ + else echo "***" 1>&2; \ + echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \ + echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \ + echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \ + echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \ + echo "*** environment variable to that prefix and run 'make' again." 1>&2; \ + echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \ + echo "***" 1>&2; exit 1; fi) +endif + CC = $(TOOLPREFIX)gcc AS = $(TOOLPREFIX)gas LD = $(TOOLPREFIX)ld |