1# sourced to find alternate names for things 2 3source ./configure 4 5if [ -z "$(command -v "$CROSS_COMPILE$CC")" ] 6then 7 echo "No $CROSS_COMPILE$CC found" >&2 8 exit 1 9fi 10 11if [ -z "$SED" ] 12then 13 [ ! -z "$(command -v gsed 2>/dev/null)" ] && SED=gsed || SED=sed 14fi 15 16# Tell linker to do dead code elimination at function level 17if [ "$(uname)" == "Darwin" ] 18then 19 CFLAGS+=" -Wno-deprecated-declarations" 20 : ${LDOPTIMIZE:=-Wl,-dead_strip} ${STRIP:=strip} 21else 22 : ${LDOPTIMIZE:=-Wl,--gc-sections -Wl,--as-needed} ${STRIP:=strip -s -R .note* -R .comment} 23fi 24 25# Disable a pointless warning only clang produces 26[ -n "$("$CROSS_COMPILE$CC" --version | grep -w clang)" ] && 27 CFLAGS+=" -Wno-string-plus-int" 28 29# Address Sanitizer 30if [ -n "$ASAN" ]; then 31 # Turn ASan on and disable most optimization to get more readable backtraces. 32 # (Technically ASAN is just "-fsanitize=address" and the rest is optional.) 33 export CFLAGS="$CFLAGS -fsanitize=address -O1 -g -fno-omit-frame-pointer -fno-optimize-sibling-calls" 34 export NOSTRIP=1 35 # Ignore leaks on exit. TODO 36 export ASAN_OPTIONS="detect_leaks=0" 37 # only do this once 38 unset ASAN 39fi 40 41# Probe number of available processors, and add one. 42: ${CPUS:=$(($(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null)+1))} 43 44# Centos 7 bug workaround, EOL June 30 2024. TODO 45DASHN=-n; wait -n 2>/dev/null; [ $? -eq 2 ] && unset DASHN 46 47# If the build is using gnu tools, make them behave less randomly. 48export LANG=c 49export LC_ALL=C 50