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I put it in configure, with the other environment variables, instead of
in scripts/make.sh. Here's Elliott's original commit comment:
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Just use `ASAN=1 make test_grep` or whatever.
You'll probably want to set $ASAN_SYMBOLIZER_PATH to point to
llvm-symbolizer, but Debian makes that annoying by calling the
symbolizer /usr/bin/llvm-symbolizer-4.0 or whatever, and ASan refuses to
use it:
==43370==ERROR: External symbolizer path is set to
'/usr/bin/llvm-symbolizer-4.0' which isn't a known symbolizer. Please
set the path to the llvm-symbolizer binary or other known tool.
My usual workaround for this is to drop an llvm-symbolizer symlink in
the current directory, and I'm happy to automate that in the script to
make it require no knowledge of any of this nonsense, but haven't done
so in this initial patch.
I tested that this is actually working by reverting the grep fix and
running `ASAN=1 make test_grep`.
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This is useful e.g. for cross toolchains that define $CC and $STRIP
instead of $CROSS_COMPILE.
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(The switch to 64 bits screwed up varargs: everything used to be promoted to 32
bits, but now it's 32 bits or 64 bits depending on type declarations, so you
need the type declarations. Because promoting "char" arguments to 32 bits back
when a megabyte was a lot of memory was ok, but promoting everything to 64 bits
now that you can get 2 gigabytes of ram in a phone is unacceptable.)
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seldom ends well). Instead add -DBUILD_FOR_HOST to $HOSTCC and wrap #ifdefs
around problematic (smack) includes from toys.h.
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LLVM has its own nuts warnings about things that aren't wrong, but disabling
them with the relevant -Wno-* warning disabling command line option drives
gcc nuts because it's a command line option it doesn't recognize. (gcc 4.2.1
dies with an error. gcc 4.6 warns about it _only_ if it's warning about
something else. (PICK ONE, either you warn about this or you don't, distract
people from actual problems with noise about something clearly unrelated to
what just changed is extra-stupid.)
So just probe for it, and add the flag only if it doesn't complain about it
while we're producing an unrelated warning.
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$LDOPTIMIZE.
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not to produce a large unused dwarf table for C++ style stack unwinding.
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Erratum: Do not handle backspace.
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toys/*.c. Move relevant info into comment at the top of each toys/*.c. Also
convert more of Makefile into a thin wrapper around shell scripts that actually
do the work. (Makefile is only still there for the user interface.)
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