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Enhance TOOLPREFIX detection in Makefile for i386/i686-elf toolchains… #369

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Enhance TOOLPREFIX detection in Makefile for i386/i686-elf toolchains… #369

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12 changes: 8 additions & 4 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -36,13 +36,17 @@ OBJS = \
ifndef TOOLPREFIX
TOOLPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
then echo 'i386-jos-elf-'; \
elif i386-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
then echo 'i386-elf-'; \
elif i686-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
then echo 'i686-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 "*** Error: Couldn't find an i386/i686-*-elf version of GCC/binutils." 1>&2; \
echo "*** On Linux: install i386-elf-gcc or i386-jos-elf-gcc." 1>&2; \
echo "*** On Mac: brew install i686-elf-gcc (or i386-elf-gcc)." 1>&2; \
echo "*** If your toolchain uses a different prefix, set 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)
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