configure.sh (3563B)
1 #!/bin/sh 2 3 # The following environment variables can be used to configure the build: 4 # 5 # CC="compiler" 6 # Specify the compiler to use. 7 # By default, cc will be used. 8 # The string "compiler" must be the name of an executable in $PATH. 9 # 10 # ARCH="architecture" 11 # You can use this variable to build for a different architecture, for example 12 # if you want to cross-compile or to use the portable version. 13 # By default, the build script will detect which architecture it is running on. 14 # The string "architecture" must be one of "AVX2", "NEON" or "PORTABLE". 15 # 16 # THREADS=n 17 # The maximum number of threads to use for multi-threaded operations. 18 # This is also used as default value in case an operation allows 19 # specifying how many threads to use. 20 # By default, 8 threads will be used (TODO: in the future this will be 21 # determined base on the system). 22 # The number n must be between 1 and 128. 23 # 24 # SANITIZE="option1,option2,..." 25 # Add the options "-fsanitize=option1", "-fsanitize=option2", ... to the 26 # compilation command when compiling in debug mode. 27 # By default, no sanitizer is used. 28 # 29 # Examples 30 # 31 # 1. Build using clang and 4 threads 32 # CC=clang THREADS=4 ./configure.sh && make 33 # 34 # 2. Build using thread and undefined behavior sanitizers when in debug mode 35 # SANITIZE="thread,undefined" ./configure.sh && make 36 37 greparch() { 38 $CC -march=native -dM -E - </dev/null 2>/dev/null | grep "$1" 39 } 40 41 detectthreads() { 42 echo 8 # TODO: choose based on system 43 } 44 45 detectarch() { 46 [ -n "$(greparch __AVX2__)" ] && detected="AVX2" 47 [ -n "$(greparch __ARM_NEON)" ] && detected="NEON" 48 [ -z "$detected" ] && detected="PORTABLE" 49 50 echo "$detected" 51 } 52 53 validatecc() { 54 if ! (command -v "$CC" >/dev/null 2>&1) ; then 55 echo "Error: compiler '$CC' not found" 56 exit 1 57 fi 58 } 59 60 validatethreads() { 61 if [ "$THREADS" -le 0 ] || [ "$THREADS" -gt 128 ]; then 62 echo "Error: number of threads must be between 1 and 128" 63 exit 1 64 fi 65 } 66 67 validatearch() { 68 case "$ARCH" in 69 AVX2|NEON|PORTABLE) 70 ;; 71 *) 72 echo "Error: architecture '$ARCH' not supported" 73 echo "Supported architectures: AVX2, NEON, PORTABLE" 74 exit 1 75 ;; 76 esac 77 } 78 79 CC=${CC:-cc} 80 THREADS=${THREADS-"$(detectthreads)"} 81 ARCH=${ARCH-"$(detectarch)"} 82 83 validatecc 84 validatethreads 85 validatearch 86 87 STD="-std=c11" 88 WFLAGS="-pedantic -Wall -Wextra" 89 WNOFLAGS="-Wno-unused-parameter -Wno-unused-function -Wno-unknown-pragmas" 90 WNOFLAGS="$WNOFLAGS -Wno-unused-command-line-argument" 91 92 [ "$ARCH" = "AVX2" ] && AVX="-mavx2" 93 94 if [ -n "$SANITIZE" ]; then 95 # Use the user-specified comma-separated sanitizers 96 for san in $(echo "$SANITIZE" | tr ',' '\n'); do 97 SAN="$SAN -fsanitize=$san" 98 done 99 fi 100 LIBS="-lpthread" 101 102 CFLAGS="$STD $LIBS $WFLAGS $WNOFLAGS $AVX -O3 -fPIC -D$ARCH" 103 DBGFLAGS="$STD $LIBS $WFLAGS $WNOFLAGS $SAN $AVX -g3 -DDEBUG -fPIC -D$ARCH" 104 WASMFLAGS="$STD $LIBS $WFLAGS $WNOFLAGS -O3 -fPIC" 105 MACROS="-DTHREADS=$THREADS" 106 107 if (command -v "python3-config" >/dev/null 2>&1) ; then 108 PYTHON3_INCLUDES="$(python3-config --includes)" 109 PYTHON3="version $(echo "$PYTHON3_INCLUDES" | sed 's/.*3\./3./')" 110 else 111 PYTHON3_INCLUDES="" 112 PYTHON3="Not found, Python shell won't be available" 113 fi 114 115 echo "Compiler: $CC" 116 echo "Selected architecture: $ARCH" 117 echo "Number of threads: $THREADS" 118 echo "Sanitizer options (debug build only): $SAN" 119 echo "Python3 development libraries: $PYTHON3" 120 121 { 122 echo "ARCH = $ARCH"; 123 echo ""; 124 echo "CFLAGS = $CFLAGS"; 125 echo ""; 126 echo "DBGFLAGS = $DBGFLAGS"; 127 echo ""; 128 echo "WASMFLAGS = $WASMFLAGS"; 129 echo ""; 130 echo "MACROS = $MACROS" 131 echo ""; 132 echo "PYTHON3_INCLUDES = $PYTHON3_INCLUDES" 133 echo "CC = $CC" 134 echo "EMCC = emcc" 135 } > config.mk