421 lines
10 KiB
Bash
Executable File
421 lines
10 KiB
Bash
Executable File
#!/usr/bin/env bash
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CONFIG="config.mk"
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PREFIX="/usr/local"
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VERSION=$(grep "define PNGQUANT_VERSION" pngquant.c | grep -Eo "[12]\.[0-9.]+")
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DEBUG=
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SSE=auto
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OPENMP=
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if [[ "$OSTYPE" =~ "darwin" ]]; then
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COCOA_READER=auto
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LCMS2=0
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else
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COCOA_READER=0
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LCMS2=auto
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fi
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EXTRA_CFLAGS=
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EXTRA_LDFLAGS=
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# make gcc default compiler unless CC is already set
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CC=${CC:-gcc}
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help() {
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printf "%4s %s\n" "" "$1"
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}
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for i in "$@"; do
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case $i in
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--help)
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echo
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help "--prefix= installation directory [$PREFIX]"
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help "--extra-cflags= append to CFLAGS"
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help "--extra-ldflags= append to LDFLAGS"
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echo
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help "--enable-debug"
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help "--enable-sse/--disable-sse enable/disable SSE instructions"
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echo
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help "--with-openmp compile with multicore support"
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help "--with-lcms2/--without-lcms2 compile with color profile support"
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if [[ "$OSTYPE" =~ "darwin" ]]; then
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help "--with-cocoa/--without-cocoa use Cocoa framework to read images"
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fi
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echo
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help "CC=<compiler> use given compiler command"
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help "CFLAGS=<flags> pass options to the compiler"
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help "LDFLAGS=<flags> pass options to the linker"
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echo
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exit 0
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;;
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# Can be set before or after configure. Latter overrides former.
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CC=*)
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CC=${i#*=}
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;;
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CFLAGS=*)
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CFLAGS=${i#*=}
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;;
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LDFLAGS=*)
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LDFLAGS=${i#*=}
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;;
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--enable-debug)
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DEBUG=1
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;;
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--enable-sse)
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SSE=1
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;;
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--disable-sse)
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SSE=0
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;;
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--with-openmp)
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OPENMP=1
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;;
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--with-lcms2)
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LCMS2=1
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COCOA_READER=0
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;;
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--without-lcms2)
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LCMS2=0
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;;
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--with-cocoa)
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COCOA_READER=1
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LCMS2=0
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;;
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--without-cocoa)
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COCOA_READER=0
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;;
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--prefix=*)
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PREFIX=${i#*=}
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;;
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# can be used multiple times or in quotes to set multiple flags
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--extra-cflags=*)
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EXTRA_CFLAGS="$EXTRA_CFLAGS ${i#*=}"
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;;
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--extra-ldflags=*)
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EXTRA_LDFLAGS="$EXTRA_LDFLAGS ${i#*=}"
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;;
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*)
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echo "error: unknown switch ${i%%=*} (see $0 --help for the list)"
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exit 1
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;;
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esac
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done
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# If someone runs sudo make install as very first command, and configure later,
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# $CONFIG cannot be overwritten, and must be deleted before continuing.
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if [[ -f "$CONFIG" && ! -w "$CONFIG" ]]; then
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echo "Cannot overwrite file $CONFIG! Please delete it."
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exit 1
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fi
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cflags() {
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CFLAGS="$CFLAGS $1"
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}
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lflags() {
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LDFLAGS="$LDFLAGS $1"
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}
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status() {
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printf "%10s: %s\n" "$1" "$2"
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}
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# Append to CFLAGS if compiler supports flag, with optional prerequisite.
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# Fails on errors and warnings.
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conditional_cflags() {
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if [ -z "$("$CC" -xc -S -o /dev/null $2 $1 <(echo) 2>&1)" ]; then
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cflags "$1"
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fi
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}
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# returns first matching file in directory
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find_f() {
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echo $(find "$1" -not -type d -name "$2" -print -quit 2> /dev/null)
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}
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# returns first matching file in directory (no symlinks)
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find_h() {
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echo $(find "$1" -type f -name "$2" -print -quit 2> /dev/null)
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}
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find_pkgconfig() {
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LIBNAME=$1
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if pkg-config --exists "$LIBNAME" &> /dev/null; then
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cflags "$(pkg-config --cflags "$LIBNAME")"
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lflags "$(pkg-config --libs "$LIBNAME")"
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status "$LIBNAME" "shared ($(pkg-config --modversion "$LIBNAME"))"
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return 0
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fi
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return 1
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}
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find_static() {
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LIBNAME=$1
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HEADERPATTERN=$2
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STATICPATTERN=$3
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HPATH=$(find_h . "$HEADERPATTERN")
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if [ -n "$HPATH" ]; then
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APATH=$(find_f . "$STATICPATTERN")
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if [ -n "$APATH" ]; then
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cflags "-I${HPATH%/*}"
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lflags "${APATH}"
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status "$LIBNAME" "static"
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return 0
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fi
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fi
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return 1
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}
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find_library() {
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LIBNAME=$1
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DYNAMICLIBNAME=$2
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HEADERPATTERN=$3
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STATICPATTERN=$4
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DYNAMICPATTERN=$5
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# try static in current directory first
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if find_static "$LIBNAME" "$HEADERPATTERN" "$STATICPATTERN"; then
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return 0;
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fi
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# try shared
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if find_pkgconfig "$LIBNAME"; then
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return 0
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fi
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for i in "${DIRS[@]}"; do
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DIR=($i)
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HPATH=$(find_h "${DIR[0]}" "$HEADERPATTERN")
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if [ -n "$HPATH" ]; then
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SOPATH=$(find_f "${DIR[1]}" "$DYNAMICPATTERN")
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if [ -n "$SOPATH" ]; then
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cflags "-I${HPATH%/*}"
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lflags "-L${SOPATH%/*} -l$DYNAMICLIBNAME"
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status "$LIBNAME" "shared ... $SOPATH"
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return 0
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fi
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fi
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done
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return 1
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}
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# returns full png.h version string
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pngh_string() {
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echo "$(grep -m1 "define PNG_LIBPNG_VER_STRING" "$1" | \
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grep -Eo '"[^"]+"' | grep -Eo '[^"]+')"
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}
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# returns major minor version numbers from png.h
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pngh_majmin() {
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local MAJ=$(grep -m1 "define PNG_LIBPNG_VER_MAJOR" "$1" | grep -Eo "[0-9]+")
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local MIN=$(grep -m1 "define PNG_LIBPNG_VER_MINOR" "$1" | grep -Eo "[0-9]+")
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echo "${MAJ}${MIN}"
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}
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error() {
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status "$1" "error ... $2"
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echo
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exit 1
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}
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echo
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# basic check
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if ! "$CC" -xc -std=c99 <(echo "int main(){}") -o /dev/null &> /dev/null; then
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error "Compiler" "$CC is no C compiler"
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fi
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status "Compiler" "$CC"
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# init flags
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CFLAGS=${CFLAGS:--O3 -fno-math-errno -funroll-loops -fomit-frame-pointer -Wall}
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cflags "-std=c99 -I."
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lflags "-lm lib/libimagequant.a"
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# DEBUG
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if [ -z "$DEBUG" ]; then
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cflags "-DNDEBUG"
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status "Debug" "no"
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else
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cflags "-g"
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status "Debug" "yes"
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fi
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# SSE
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if [ "$SSE" = 'auto' ]; then
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if [[ "$(uname -m)" =~ (amd|x86_)64 ||
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"$(grep -E -m1 "^flags" /proc/cpuinfo)" =~ "sse" ]]; then
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SSE=1
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fi
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fi
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if [ "$SSE" -eq 1 ]; then
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status "SSE" "yes"
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cflags "-DUSE_SSE=1"
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cflags "-msse"
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# Silence a later ICC warning due to -msse working slightly different.
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conditional_cflags "-wd10121"
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# Must be set explicitly for GCC on x86_32. Other compilers imply it.
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conditional_cflags "-mfpmath=sse" "-msse"
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elif [ "$SSE" -eq 0 ]; then
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status "SSE" "no"
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cflags "-DUSE_SSE=0"
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fi
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# OpenMP
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if [ -n "$OPENMP" ]; then
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if [[ "$("$CC" -xc -E -fopenmp <(echo -e \
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"#ifdef _OPENMP
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#include <omp.h>
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#endif") 2>&1)" =~ "omp_get_thread_num" ]]; then
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cflags "-fopenmp"
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lflags "-fopenmp"
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status "OpenMP" "yes"
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else
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error "OpenMP" "not supported by compiler (please install a compiler that supports OpenMP (e.g. gcc) and specify it with the CC= argument)"
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fi
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else
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# silence warnings about omp pragmas
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cflags "-Wno-unknown-pragmas"
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conditional_cflags "-wd3180" # ICC
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status "OpenMP" "no"
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fi
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# Cocoa
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if [[ "$OSTYPE" =~ "darwin" ]]; then
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cflags "-mmacosx-version-min=10.6"
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lflags "-mmacosx-version-min=10.6"
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if [ "$COCOA_READER" != 0 ]; then
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COCOA_READER=1
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cflags "-DUSE_COCOA=1"
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lflags "-framework Cocoa"
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status "Cocoa" "yes"
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else
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status "Cocoa" "no"
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fi
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fi
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if [[ "$OSTYPE" =~ "darwin" ]]; then
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SOLIBSUFFIX=dylib
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else
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SOLIBSUFFIX=so
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fi
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# pairs of possible *.h and lib*.so locations
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DIRS=("/usr/local/include /usr/local/lib"
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"/usr/include /usr/lib")
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# libpng
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SUCCESS=0
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# try static in current directory first
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PNGH=$(find_h . "png.h")
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if [ -n "$PNGH" ]; then
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PNGH_STRING=$(pngh_string "$PNGH")
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PNGH_MAJMIN=$(pngh_majmin "$PNGH")
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if [[ -n "$PNGH_STRING" && -n "$PNGH_MAJMIN" ]]; then
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LIBPNGA=$(find_f . "libpng${PNGH_MAJMIN}.a")
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if [ -n "$LIBPNGA" ]; then
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cflags "-I${PNGH%/*}"
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lflags "${LIBPNGA}"
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status "libpng" "static (${PNGH_STRING})"
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SUCCESS=1
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fi
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fi
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fi
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# try shared
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if [ "$SUCCESS" -eq 0 ]; then
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if find_pkgconfig libpng; then
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SUCCESS=1
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else
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for i in "${DIRS[@]}"; do
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DIR=($i)
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PNGH=$(find_h "${DIR[0]}" "png.h")
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if [ -n "$PNGH" ]; then
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PNGH_STRING=$(pngh_string "$PNGH")
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PNGH_MAJMIN=$(pngh_majmin "$PNGH")
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if [[ -n "$PNGH_STRING" && -n "$PNGH_MAJMIN" ]]; then
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LIBPNGSO=$(find_f "${DIR[1]}" "libpng${PNGH_MAJMIN}.$SOLIBSUFFIX*")
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if [ -n "$LIBPNGSO" ]; then
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cflags "-I${PNGH%/*}"
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lflags "-L${LIBPNGSO%/*} -lpng${PNGH_MAJMIN}"
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status "libpng" "shared (${PNGH_STRING})"
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SUCCESS=1
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break
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fi
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fi
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fi
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done
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fi
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fi
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if [ "$SUCCESS" -eq 0 ]; then
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if [[ "$OSTYPE" =~ "darwin" ]]; then
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LIBPNGCOMMAND='`brew install libpng`'
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else
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LIBPNGCOMMAND='`apt-get install libpng-dev` or `yum install libpng-devel`'
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fi
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error "libpng" "not found (try: $LIBPNGCOMMAND)"
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fi
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# zlib
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if ! find_library "zlib" "z" "zlib.h" "libz.a" "libz.$SOLIBSUFFIX*"; then
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error "zlib" "not found (please install zlib-devel package)"
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fi
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# lcms2
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if [ "$LCMS2" != 0 ]; then
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if find_library "lcms2" "lcms2" "lcms2.h" "liblcms2.a" "liblcms2.$SOLIBSUFFIX*"; then
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cflags "-DUSE_LCMS=1"
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else
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if [ "$LCMS2" = 'auto' ]; then
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status "lcms2" "no"
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else
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error "lcms2" "not found (please install libcms2-devel package)"
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fi
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fi
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else
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status "lcms2" "no"
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fi
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echo
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# As of GCC 4.5, 387 fp math is significantly slower in C99 mode without this.
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# Note: CPUs without SSE2 use 387 for doubles, even when SSE fp math is set.
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conditional_cflags "-fexcess-precision=fast"
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# Intel C++ Compiler
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# ICC does usually only produce fast(er) code when it can optimize to the full
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# capabilites of the (Intel) CPU. This is equivalent to -march=native for GCC.
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conditional_cflags "-xHOST"
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# Disable unsafe fp optimizations and enforce fp precision as set in the source.
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conditional_cflags "-fp-model source"
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# Silence a gold linker warning about string misalignment.
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conditional_cflags "-falign-stack=maintain-16-byte"
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lflags "-lm" # Ubuntu requires this library last, issue #38
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if [ -n "$EXTRA_CFLAGS" ]; then
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cflags "$EXTRA_CFLAGS"
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fi
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if [ -n "$EXTRA_LDFLAGS" ]; then
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lflags "$EXTRA_LDFLAGS"
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fi
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# Overwrite previous configuration.
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echo "
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# auto-generated by configure
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PREFIX = $PREFIX
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VERSION = $VERSION
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CC = $CC
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CFLAGS = $CFLAGS
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LDFLAGS = $LDFLAGS
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COCOA_READER = $COCOA_READER
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" > "$CONFIG"
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# Configure static library the same way
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cp "$CONFIG" lib/
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