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#!/bin/sh
cc=${CC:-cc}
detectarch() { ${cc} -march=native -dM -E - </dev/null | grep "$1"; }
detectsan() { ${cc} -fsanitize=$1 -dM -E -x c - </dev/null | grep "SANITIZE"; }
[ -n "$(detectarch __AVX2__)" ] && detected="AVX2"
[ -n "$(detectarch __ARM_NEON)" ] && detected="NEON"
TYPE=${TYPE-"$detected"}
STD="-std=c99"
WFLAGS="-pedantic -Wall -Wextra -Wno-unused-parameter -Wno-unused-function"
[ "$TYPE" = "AVX2" ] && AVX="-mavx2"
[ -n "$(detectsan address)" ] && ADDR="-fsanitize=address"
[ -n "$(detectsan undefined)" ] && UNDEF="-fsanitize=undefined"
SAN="$ADDR $UNDEF"
CFLAGS="$STD $WFLAGS $AVX -O3"
DBGFLAGS="$STD $WFLAGS $SAN $AVX -g3 -DDEBUG"
echo "Cube type: CUBE_$TYPE"
echo "Compiler: ${CC:-cc}"
{
echo "CUBETYPE = CUBE_$TYPE";
echo "";
echo "CFLAGS = $CFLAGS";
echo "DBGFLAGS = $DBGFLAGS";
echo "";
echo "CC = ${cc}"
} > config.mk
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