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https://github.com/landley/toybox.git
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Rob Landley
9115abfe45
Even building standalone hello world complains "ASan runtime does not come first in initial library list" and says to use LD_PRELOAD without saying WHAT to set it to. This avoids that. (It breaks llvm, but https://github.com/llvm/llvm-project/pull/98194 fixes it.)
49 lines
1.4 KiB
Bash
49 lines
1.4 KiB
Bash
# sourced to find alternate names for things
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source ./configure
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if [ -z "$(command -v "$CROSS_COMPILE$CC")" ]
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then
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echo "No $CROSS_COMPILE$CC found" >&2
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exit 1
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fi
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if [ -z "$SED" ]
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then
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[ ! -z "$(command -v gsed 2>/dev/null)" ] && SED=gsed || SED=sed
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fi
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# Tell linker to do dead code elimination at function level
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if [ "$(uname)" == "Darwin" ]
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then
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CFLAGS+=" -Wno-deprecated-declarations"
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: ${LDOPTIMIZE:=-Wl,-dead_strip} ${STRIP:=strip}
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else
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: ${LDOPTIMIZE:=-Wl,--gc-sections -Wl,--as-needed} ${STRIP:=strip -s -R .note* -R .comment}
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fi
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# Disable pointless warnings only clang produces
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[ -n "$("$CROSS_COMPILE$CC" --version | grep -w clang)" ] &&
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CFLAGS+=" -Wno-string-plus-int -Wno-invalid-source-encoding" ||
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# And ones only gcc produces
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CFLAGS+=" -Wno-restrict -Wno-format-overflow"
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# Address Sanitizer
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if [ -n "$ASAN" ]; then
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# Turn ASan on and disable most optimization to get more readable backtraces.
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# (Technically ASAN is just "-fsanitize=address" and the rest is optional.)
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export CFLAGS="$CFLAGS -fsanitize=address -O1 -g -fno-omit-frame-pointer -fno-optimize-sibling-calls -static-libasan"
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export NOSTRIP=1
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# Ignore leaks on exit. TODO
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export ASAN_OPTIONS="detect_leaks=0"
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# only do this once
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unset ASAN
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fi
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# Probe number of available processors, and add one.
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: ${CPUS:=$(($(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null)+1))}
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# If the build is using gnu tools, make them behave less randomly.
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export LANG=c
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export LC_ALL=C
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