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configure
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configure
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#!/usr/bin/env bash
# configure script for zlib.
#
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static
#
# To impose specific compiler or flags or install directory, use for example:
# prefix=$HOME CC=cc CFLAGS="-O4" ./configure
# or for csh/tcsh users:
# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
# If you have problems, try without defining CC and CFLAGS before reporting
# an error.
# start off configure.log
echo -------------------- >> configure.log
echo $0 $* >> configure.log
date >> configure.log
SRCDIR=$(cd $(dirname $0); pwd)
BUILDDIR=$(pwd)
# set command prefix for cross-compilation
if [ -n "${CHOST}" ]; then
# normalize the chost before parsing it
NORM_CHOST=$(sh "$SRCDIR"/tools/config.sub $CHOST)
uname="$(echo "${NORM_CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/')"
CROSS_PREFIX="${CHOST}-"
ARCH="$(echo "${NORM_CHOST}" | sed -e 's/-.*//')"
else
ARCH="$(uname -m)"
fi
case "${ARCH}" in
x86_64)
case "${CFLAGS}" in
*-m32*)
ARCH=i686
;;
esac
;;
i386 | i486 | i586 | i686)
case "${CFLAGS}" in
*-m64*)
ARCH=x86_64
;;
esac
;;
esac
# destination name for windows import library
IMPORTLIB=
# establish commands for library building
if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
AR=${AR-"${CROSS_PREFIX}ar"}
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
else
AR=${AR-"ar"}
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
fi
ARFLAGS=${ARFLAGS-"rc"}
if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
else
RANLIB=${RANLIB-"ranlib"}
fi
# set defaults before processing command line options
LDCONFIG=${LDCONFIG-"ldconfig"}
DEFFILE=
RC=
RCFLAGS=
RCOBJS=
STRIP=
ARCHS=
prefix=${prefix-/usr/local}
exec_prefix=${exec_prefix-'${prefix}'}
bindir=${bindir-'${exec_prefix}/bin'}
libdir=${libdir-'${exec_prefix}/lib'}
sharedlibdir=${sharedlibdir-'${libdir}'}
includedir=${includedir-'${prefix}/include'}
mandir=${mandir-'${prefix}/share/man'}
shared_ext='.so'
shared=1
gzfileops=1
unalignedok=1
compat=0
cover=0
build32=0
build64=0
buildvpclmulqdq=1
buildacle=1
buildaltivec=1
buildpower8=1
buildpower9=1
buildneon=1
builddfltccdeflate=0
builddfltccinflate=0
buildcrc32vx=1
floatabi=
native=0
forcesse2=0
# For CPUs that can benefit from AVX512, it seems GCC generates suboptimal
# instruction scheduling unless you specify a reasonable -mtune= target
avx512flag="-mavx512f -mavx512dq -mavx512bw -mavx512vl"
avx512vnniflag="${avx512flag} -mavx512vnni"
avx2flag="-mavx2"
sse2flag="-msse2"
ssse3flag="-mssse3"
sse42flag="-msse4.2"
pclmulflag="-mpclmul"
vpclmulflag="-mvpclmulqdq -mavx512f"
xsaveflag="-mxsave"
acleflag=
neonflag=
noltoflag="-fno-lto"
vgfmaflag="-march=z13"
vmxflag="-maltivec"
symbol_prefix=""
without_optimizations=0
without_new_strategies=0
reducedmem=0
gcc=0
warn=0
debug=0
visibility=1
old_cc="$CC"
old_cflags="$CFLAGS"
OBJC='$(OBJZ)'
PIC_OBJC='$(PIC_OBJZ)'
INSTALLTARGETS="install-shared install-static"
UNINSTALLTARGETS="uninstall-shared uninstall-static"
TEST="teststatic"
# leave this script, optionally in a bad way
leave()
{
if test "$*" != "0"; then
echo "** $0 aborting." | tee -a configure.log
fi
rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
echo -------------------- >> configure.log
echo >> configure.log
echo >> configure.log
exit $1
}
# process command line options
while test $# -ge 1
do
case "$1" in
-h* | --help)
echo 'usage:' | tee -a configure.log
echo ' configure [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
echo ' [--static] [--32] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
echo ' [--sprefix=SYMBOL_PREFIX] Adds a prefix to all exported symbols' | tee -a configure.log
echo ' [--warn] Enables extra compiler warnings' | tee -a configure.log
echo ' [--debug] Enables extra debug prints during operation' | tee -a configure.log
echo ' [--zlib-compat] Compiles for zlib-compatible API instead of zlib-ng API' | tee -a configure.log
echo ' [--without-unaligned] Compiles without fast unaligned access' | tee -a configure.log
echo ' [--without-gzfileops] Compiles without the gzfile parts of the API enabled' | tee -a configure.log
echo ' [--without-optimizations] Compiles without support for optional instruction sets' | tee -a configure.log
echo ' [--without-new-strategies] Compiles without using new additional deflate strategies' | tee -a configure.log
echo ' [--without-acle] Compiles without ARM C Language Extensions' | tee -a configure.log
echo ' [--without-neon] Compiles without ARM Neon SIMD instruction set' | tee -a configure.log
echo ' [--without-altivec] Compiles without PPC AltiVec support' | tee -a configure.log
echo ' [--without-power8] Compiles without Power8 instruction set' | tee -a configure.log
echo ' [--with-dfltcc-deflate] Use DEFLATE CONVERSION CALL instruction for compression on IBM Z' | tee -a configure.log
echo ' [--with-dfltcc-inflate] Use DEFLATE CONVERSION CALL instruction for decompression on IBM Z' | tee -a configure.log
echo ' [--without-crc32-vx] Build without vectorized CRC32 on IBM Z' | tee -a configure.log
echo ' [--with-reduced-mem] Reduced memory usage for special cases (reduces performance)' | tee -a configure.log
echo ' [--force-sse2] Assume SSE2 instructions are always available (disabled by default on x86, enabled on x86_64)' | tee -a configure.log
echo ' [--native] Compiles with full instruction set supported on this host' | tee -a configure.log
exit 0 ;;
-p*=* | --prefix=*) prefix=$(echo $1 | sed 's/.*=//'); shift ;;
-e*=* | --eprefix=*) exec_prefix=$(echo $1 | sed 's/.*=//'); shift ;;
-m*=* | --sprefix=*) symbol_prefix=$(echo $1 | sed 's/.*=//'); shift ;;
-l*=* | --libdir=*) libdir=$(echo $1 | sed 's/.*=//'); shift ;;
--sharedlibdir=*) sharedlibdir=$(echo $1 | sed 's/.*=//'); shift ;;
-i*=* | --includedir=*) includedir=$(echo $1 | sed 's/.*=//');shift ;;
-u*=* | --uname=*) uname=$(echo $1 | sed 's/.*=//');shift ;;
-p* | --prefix) prefix="$2"; shift; shift ;;
-e* | --eprefix) exec_prefix="$2"; shift; shift ;;
-m* | --sprefix) symbol_prefix="$2"; shift; shift ;;
-l* | --libdir) libdir="$2"; shift; shift ;;
-i* | --includedir) includedir="$2"; shift; shift ;;
-s* | --shared | --enable-shared) shared=1; shift ;;
-t | --static) shared=0; shift ;;
--zlib-compat) compat=1; shift ;;
--without-unaligned) unalignedok=0; shift ;;
--without-gzfileops) gzfileops=0; shift ;;
--cover) cover=1; shift ;;
-3* | --32) build32=1; shift ;;
-6* | --64) build64=1; shift ;;
--without-vpclmulqdq) buildvpclmulqdq=0; shift ;;
--without-acle) buildacle=0; shift ;;
--without-neon) buildneon=0; shift ;;
--without-altivec) buildaltivec=0 ; shift ;;
--without-power8) buildpower8=0 ; shift ;;
--without-power9) buildpower9=0 ; shift ;;
--with-dfltcc-deflate) builddfltccdeflate=1; shift ;;
--with-dfltcc-inflate) builddfltccinflate=1; shift ;;
--without-crc32-vx) buildcrc32vx=0; shift ;;
--with-reduced-mem) reducedmem=1; shift ;;
--force-sse2) forcesse2=1; shift ;;
-n | --native) native=1; shift ;;
-a*=* | --archs=*) ARCHS=$(echo $1 | sed 's/.*=//'); shift ;;
--sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
--localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
-noopt | --without-optimizations) without_optimizations=1; shift;;
-oldstrat | --without-new-strategies) without_new_strategies=1; shift;;
-w* | --warn) warn=1; shift ;;
-d* | --debug) debug=1; shift ;;
*)
echo "unknown option: $1" | tee -a configure.log
echo "$0 --help for help" | tee -a configure.log
leave 1;;
esac
done
# temporary file name
test=ztest$$
# put arguments in log, also put test file in log if used in arguments
show()
{
case "$*" in
*$test.c*)
echo "=== $test.c ===" >> configure.log
cat $test.c >> configure.log
echo "===" >> configure.log;;
esac
echo $* >> configure.log
}
# check for gcc vs. cc and set compile and link flags based on the system identified by uname
cat > $test.c <<EOF
extern int getchar();
int main() {return getchar();}
EOF
cc=${CC-${CROSS_PREFIX}gcc}
echo -n "Checking for compiler... " | tee -a configure.log
case "$cc" in
*gcc*) gcc=1 ;;
*clang*) gcc=1 ;;
esac
case $($cc -v 2>&1) in
*gcc*) gcc=1 ;;
*clang*) gcc=1 ;;
esac
if test $native -eq 1; then
avx512flag=""
avx512vnniflag=""
avx2flag=""
sse2flag=""
ssse3flag=""
sse42flag=""
pclmulflag=""
vpclmulflag=""
xsaveflag=""
noltoflag=""
fi
if test $build32 -eq 1; then
CFLAGS="${CFLAGS} -m32"
SFLAGS="${SFLAGS} -m32"
LDFLAGS="${LDFLAGS} -m32"
fi
if test $build64 -eq 1; then
CFLAGS="${CFLAGS} -m64"
SFLAGS="${SFLAGS} -m64"
LDFLAGS="${LDFLAGS} -m64"
fi
# Set library name depending on zlib-compat option
if test $compat -eq 0; then
LIBNAME=libz-ng
LIBNAME2=zlib-ng
SUFFIX=-ng
else
LIBNAME=libz
LIBNAME2=zlib
SUFFIX=""
fi
STATICLIB=${LIBNAME}.a
MAPNAME=${LIBNAME2}.map
# extract zlib version numbers from zlib.h
if test $compat -eq 0; then
VER=$(sed -n -e '/ZLIBNG_VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}/zlib-ng.h.in)
VER3=$(sed -n -e '/ZLIBNG_VERSION "/s/.*"\([0-9]*\.[0-9]*\.[0-9]*\).*/\1/p' < ${SRCDIR}/zlib-ng.h.in)
VER2=$(sed -n -e '/ZLIBNG_VERSION "/s/.*"\([0-9]*\.[0-9]*\)\..*/\1/p' < ${SRCDIR}/zlib-ng.h.in)
VER1=$(sed -n -e '/ZLIBNG_VERSION "/s/.*"\([0-9]*\)\..*/\1/p' < ${SRCDIR}/zlib-ng.h.in)
else
VER=$(sed -n -e '/ZLIB_VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}/zlib.h.in)
VER3=$(sed -n -e '/ZLIB_VERSION "/s/.*"\([0-9]*\.[0-9]*\.[0-9]*\).*/\1/p' < ${SRCDIR}/zlib.h.in)
VER2=$(sed -n -e '/ZLIB_VERSION "/s/.*"\([0-9]*\.[0-9]*\)\..*/\1/p' < ${SRCDIR}/zlib.h.in)
VER1=$(sed -n -e '/ZLIB_VERSION "/s/.*"\([0-9]*\)\..*/\1/p' < ${SRCDIR}/zlib.h.in)
fi
show $cc -c $test.c
if test "$gcc" -eq 1 && ($cc $CFLAGS -c $test.c) >> configure.log 2>&1; then
echo "$cc" | tee -a configure.log
CC="$cc"
CFLAGS="${CFLAGS} -std=c11"
# Re-check ARCH if the compiler is a cross-compiler.
if $CC -print-multiarch 1> /dev/null 2>&1 && test -n "$($CC -print-multiarch)" 1> /dev/null 2>&1; then
CC_ARCH=$($CC $CFLAGS -print-multiarch | sed 's/-.*//g')
else
CC_ARCH=$($CC $CFLAGS -dumpmachine | sed 's/-.*//g')
fi
case $CC_ARCH in
i386 | i486 | i586 | i686)
# Honor user choice if gcc is multilib and 64-bit is requested
if test $build64 -eq 1; then
ARCH=x86_64
else
ARCH=$CC_ARCH
fi ;;
x86_64)
# Honor user choice if gcc is multilib and 32-bit is requested
if test $build32 -ne 1; then
ARCH=$CC_ARCH
fi ;;
arm | armeb)
if test $native -eq 0; then
ARCH=arm
else
ARCH=native
fi
if test "${uname}" = "eabi"; then
# No ACLE support
uname=arm
if test $buildacle -eq 1; then
echo ACLE support not available
buildacle=0
fi
fi
if test $buildacle -eq 1; then
if test $native -eq 0; then
ARCH=armv8-a+crc
fi
fi ;;
armv8l)
if test $native -eq 0; then
ARCH=armv8-a
else
ARCH=native
fi ;;
aarch64 | aarch64_be | arm64)
if test "${uname}" = "elf"; then
uname=aarch64
fi
if test $native -eq 0; then
ARCH=aarch64
else
ARCH=native
fi ;;
powerpc | ppc)
ARCH=powerpc ;;
powerpc64 | ppc64)
ARCH=powerpc64 ;;
powerpc64le | ppc64le)
ARCH=powerpc64le ;;
esac
CFLAGS="-O2 ${CFLAGS}"
if test -n "${ARCHS}"; then
CFLAGS="${CFLAGS} ${ARCHS}"
LDFLAGS="${LDFLAGS} ${ARCHS}"
fi
CFLAGS="${CFLAGS} -Wall"
SFLAGS="${CFLAGS} -fPIC"
if test $native -eq 1; then
case $ARCH in
powerpc*)
NATIVE_FLAG="-mcpu=native" ;;
*)
NATIVE_FLAG="-march=native" ;;
esac
CFLAGS="${CFLAGS} ${NATIVE_FLAG}"
SFLAGS="${SFLAGS} ${NATIVE_FLAG}"
fi
if test "$warn" -eq 1; then
CFLAGS="${CFLAGS} -Wextra"
fi
if test $debug -eq 1; then
CFLAGS="${CFLAGS} -DZLIB_DEBUG"
SFLAGS="${SFLAGS} -DZLIB_DEBUG"
else
CFLAGS="${CFLAGS} -DNDEBUG"
SFLAGS="${SFLAGS} -DNDEBUG"
fi
if test -z "$uname"; then
uname=$((uname -s || echo unknown) 2>/dev/null)
fi
case "$uname" in
Linux* | linux* | GNU | GNU/* | solaris*)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,-soname,${LIBNAME}.so.${VER1},--version-script,${SRCDIR}/${MAPNAME}" ;;
*BSD | *bsd* | DragonFly)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,-soname,${LIBNAME}.so.${VER1},--version-script,${SRCDIR}/${MAPNAME}"
LDCONFIG="ldconfig -m" ;;
CYGWIN* | Cygwin* | cygwin*)
visibility=0
ARFLAGS="rcs"
SFLAGS="${CFLAGS}"
shared_ext='.dll'
sharedlibdir='${bindir}'
if test $compat -eq 0; then
SHAREDLIB=cygz-ng$shared_ext
else
SHAREDLIB=cygz$shared_ext
fi
SHAREDLIBM=''
SHAREDLIBV=''
SHAREDTARGET=$SHAREDLIB
IMPORTLIB="${LIBNAME}.dll.a"
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,--out-implib,${IMPORTLIB},--version-script,${SRCDIR}/${MAPNAME}"
LDSHAREDLIBC=""
if test $gzfileops -eq 0; then
DEFFILE='win32/${LIBNAME2}.def'
fi
RC="${CROSS_PREFIX}windres"
RCFLAGS="-I ${BUILDDIR}"
RCOBJS='zlibrc.o'
STRIP="${CROSS_PREFIX}strip"
EXE='.exe' ;;
MSYS* | msys*)
visibility=0
ARFLAGS="rcs"
SFLAGS="${CFLAGS}"
shared_ext='.dll'
sharedlibdir='${bindir}'
if test $compat -eq 0; then
SHAREDLIB=msys-z-ng$shared_ext
else
SHAREDLIB=msys-z$shared_ext
fi
SHAREDLIBM=''
SHAREDLIBV=''
SHAREDTARGET=$SHAREDLIB
IMPORTLIB="${LIBNAME}.dll.a"
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,--out-implib,${IMPORTLIB}"
LDSHAREDLIBC=""
if test $gzfileops -eq 0; then
DEFFILE='win32/${LIBNAME2}.def'
fi
RC="${CROSS_PREFIX}windres"
RCFLAGS="-I ${BUILDDIR}"
RCOBJS='zlibrc.o'
STRIP="${CROSS_PREFIX}strip"
EXE='.exe' ;;
MINGW* | mingw*)
visibility=0
ARFLAGS="rcs"
CFLAGS="${CFLAGS} -D_POSIX_C_SOURCE=200809L -D_GNU_SOURCE=1 -Wno-pedantic-ms-format"
SFLAGS="${CFLAGS}"
shared_ext='.dll'
sharedlibdir='${bindir}'
SHAREDLIB=${LIBNAME}-$VER1$shared_ext
SHAREDLIBM=''
SHAREDLIBV=''
SHAREDTARGET=$SHAREDLIB
IMPORTLIB="${LIBNAME}.dll.a"
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,--out-implib=${IMPORTLIB} -Wl,--version-script=${SRCDIR}/${MAPNAME}"
LDSHAREDLIBC=""
if test $gzfileops -eq 0; then
DEFFILE='win32/${LIBNAME2}.def'
fi
RC="${CROSS_PREFIX}windres"
RCFLAGS="-I ${BUILDDIR}"
if [ "$CC" == "mingw32-gcc" ]; then
case $ARCH in
i386 | i486 | i586 | i686) RCFLAGS="${RCFLAGS} -F pe-i386";;
esac;
fi
RCOBJS='zlibrc.o'
STRIP="${CROSS_PREFIX}strip"
EXE='.exe' ;;
QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
# (alain.bonnefoy@icbt.com)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,-h${LIBNAME}.so.${VER1}" ;;
HP-UX*)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared"
case $((uname -m || echo unknown) 2>/dev/null) in
ia64)
shared_ext='.so'
SHAREDLIB='${LIBNAME}.so' ;;
*)
shared_ext='.sl'
SHAREDLIB='${LIBNAME}.sl' ;;
esac ;;
Darwin* | darwin*)
shared_ext='.dylib'
SHAREDLIB=${LIBNAME}$shared_ext
SHAREDLIBV=${LIBNAME}.$VER$shared_ext
SHAREDLIBM=${LIBNAME}.$VER1$shared_ext
SHAREDTARGET=$SHAREDLIBV
LDSHARED=${LDSHARED-"$cc"}
case ${libdir} in
/*)
LDSHAREDFLAGS="-dynamiclib -install_name ${libdir}/${SHAREDLIBM} -compatibility_version ${VER1} -current_version ${VER3}" ;;
*)
LDSHAREDFLAGS="-dynamiclib -install_name @rpath/${libdir}/${SHAREDLIBM} -compatibility_version ${VER1} -current_version ${VER3}" ;;
esac
if libtool -V 2>&1 | grep Apple > /dev/null; then
AR="libtool"
else
AR="/usr/bin/libtool"
fi
ARFLAGS="-o" ;;
aarch64)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared -Wl,-soname,${LIBNAME}.so.${VER1} -Wl,--version-script,${SRCDIR}/${MAPNAME}"
LDSHAREDLIBC="-Wl,--start-group -lc -lrdimon -Wl,--end-group" ;;
*)
LDSHARED=${LDSHARED-"$cc"}
LDSHAREDFLAGS="-shared" ;;
esac
else
# find system name and corresponding cc options
CC=${CC-cc}
gcc=0
echo "$CC" | tee -a configure.log
if test -z "$uname"; then
uname=$((uname -sr || echo unknown) 2>/dev/null)
fi
case "$uname" in
HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"ld"}
LDSHAREDFLAGS="-b"
case $((uname -m || echo unknown) 2>/dev/null) in
ia64)
shared_ext='.so'
SHAREDLIB='${LIBNAME}.so' ;;
*)
shared_ext='.sl'
SHAREDLIB='${LIBNAME}.sl' ;;
esac ;;
AIX*) # Courtesy of dbakker@arrayasolutions.com
SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
LDSHARED=${LDSHARED-"xlc"}
LDSHAREDFLAGS="-G" ;;
# send working options for other systems to zlib@gzip.org
*) SFLAGS=${CFLAGS-"-O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc"}
LDSHAREDFLAGS="-shared" ;;
esac
fi
# Simplify some later conditionals
case "$uname" in
Linux* | linux*)
LINUX=1 ;;
*)
LINUX=0 ;;
esac
# destination names for shared library if not defined above
SHAREDLIB=${SHAREDLIB-"${LIBNAME}$shared_ext"}
SHAREDLIBV=${SHAREDLIBV-"${LIBNAME}$shared_ext.$VER"}
SHAREDLIBM=${SHAREDLIBM-"${LIBNAME}$shared_ext.$VER1"}
SHAREDTARGET=${SHAREDTARGET-"${LIBNAME}$shared_ext.$VER"}
echo >> configure.log
# define functions for testing compiler and library characteristics and logging the results
cat > $test.c <<EOF
#error error
EOF
if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
try()
{
show $*
test "$(\( $* \) 2>&1 | tee -a configure.log)" = ""
}
echo - using any output from compiler to indicate an error >> configure.log
else
try()
{
show $*
( $* ) >> configure.log 2>&1
ret=$?
if test $ret -ne 0; then
echo "(exit code $ret)" >> configure.log
fi
return $ret
}
fi
cat > $test.c << EOF
int foo() { return 0; }
EOF
echo "Checking for obsessive-compulsive compiler options..." >> configure.log
if try $CC -c $CFLAGS $test.c; then
:
else
echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
leave 1
fi
echo >> configure.log
# see if shared library build supported
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF
if test $shared -eq 1; then
echo -n "Checking for shared library support... " | tee -a configure.log
# we must test in two steps (cc then ld), required at least on SunOS 4.x
if try $CC -w -c $SFLAGS $test.c &&
try $LDSHARED $LDSHAREDFLAGS $LDFLAGS -o $test$shared_ext $test.o $LDSHAREDLIBC; then
echo "Building shared library $SHAREDTARGET with $CC." | tee -a configure.log
elif test -z "$old_cc" -a -z "$old_cflags"; then
echo "No shared library support." | tee -a configure.log
shared=0;
else
echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
shared=0;
fi
fi
if test $shared -eq 0; then
LDSHARED="$CC"
LDSHAREDFLAGS=""
ALL="static"
SHAREDLIB=""
SHAREDLIBV=""
SHAREDLIBM=""
SHAREDTARGET=""
INSTALLTARGETS=install-static
UNINSTALLTARGETS=uninstall-static
echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
else
ALL="static shared"
TEST="${TEST} testshared"
fi
echo >> configure.log
# check for large file support, and if none, check for fseeko()
cat > $test.c <<EOF
#include <sys/types.h>
off64_t dummy = 0;
EOF
if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
echo "Checking for off64_t... Yes." | tee -a configure.log
echo "Checking for fseeko... Yes." | tee -a configure.log
else
echo "Checking for off64_t... No." | tee -a configure.log
echo >> configure.log
cat > $test.c <<EOF
#include <sys/types.h>
int main() {
_off64_t dummy = 0;
return 0;
}
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for _off64_t... Yes." | tee -a configure.log
else
echo "Checking for _off64_t... No." | tee -a configure.log
fi
echo >> configure.log
cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
fseeko(NULL, 0, 0);
return 0;
}
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for fseeko... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_FSEEKO"
SFLAGS="${SFLAGS} -DNO_FSEEKO"
echo "Checking for fseeko... No." | tee -a configure.log
fi
fi
echo >> configure.log
cat > $test.c <<EOF
#define _POSIX_C_SOURCE 200112L
#include <stdlib.h>
int main(void) {
void *ptr = 0;
int ret = posix_memalign(&ptr, 64, 10);
if (ptr)
free(ptr);
return ret;
}
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for posix_memalign... Yes." | tee -a configure.log
CFLAGS="${CFLAGS} -DHAVE_POSIX_MEMALIGN"
SFLAGS="${SFLAGS} -DHAVE_POSIX_MEMALIGN"
else
echo "Checking for posix_memalign... No." | tee -a configure.log
fi
echo >> configure.log
cat > $test.c <<EOF
#define _ISOC11_SOURCE 1
#include <stdlib.h>
int main(void) {
void *ptr = aligned_alloc(64, 10);
if (ptr)
free(ptr);
return 0;
}
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for aligned_alloc... Yes." | tee -a configure.log
CFLAGS="${CFLAGS} -DHAVE_ALIGNED_ALLOC"
SFLAGS="${SFLAGS} -DHAVE_ALIGNED_ALLOC"
else
echo "Checking for aligned_alloc... No." | tee -a configure.log
fi
echo >> configure.log
# check for strerror() for use by gz* functions
cat > $test.c <<EOF
#include <string.h>
#include <errno.h>
int main() { return strlen(strerror(errno)); }
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for strerror... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_STRERROR"
SFLAGS="${SFLAGS} -DNO_STRERROR"
echo "Checking for strerror... No." | tee -a configure.log
fi
# check for getauxval() or elf_aux_info() for architecture feature detection at run-time
cat > $test.c <<EOF
#include <sys/auxv.h>
int main() {
#ifdef __FreeBSD__
int test;
return elf_aux_info(AT_PAGESZ, &test, sizeof(test));
#else
return getauxval(0);
#endif
}
EOF
if try $CC $CFLAGS -o $test $test.c $LDSHAREDLIBC; then
echo "Checking for getauxval() or elf_aux_info() in sys/auxv.h... Yes." | tee -a configure.log
CFLAGS="${CFLAGS} -DHAVE_SYS_AUXV_H"
SFLAGS="${SFLAGS} -DHAVE_SYS_AUXV_H"
else
echo "Checking for getauxval() in sys/auxv.h... No." | tee -a configure.log
fi
# We need to remove consigured files (zconf.h etc) from source directory if building outside of it
if [ "$SRCDIR" != "$BUILDDIR" ]; then
rm -f $SRCDIR/zconf${SUFFIX}.h
rm -f $SRCDIR/zlib${SUFFIX}.h
rm -f $SRCDIR/zlib_name_mangling${SUFFIX}.h
fi
# Rename @ZLIB_SYMBOL_PREFIX@ to $symbol_prefix in gzread.c, zlib.h and zlib_name_mangling.h
sed < $SRCDIR/gzread.c.in "s/@ZLIB_SYMBOL_PREFIX@/$symbol_prefix/g" > gzread.c
sed < $SRCDIR/zlib${SUFFIX}.h.in "s/@ZLIB_SYMBOL_PREFIX@/$symbol_prefix/g" > zlib${SUFFIX}.h
if [[ ! -z $symbol_prefix ]]; then
sed < $SRCDIR/zlib_name_mangling${SUFFIX}.h.in "s/@ZLIB_SYMBOL_PREFIX@/$symbol_prefix/g" > zlib_name_mangling${SUFFIX}.h
else
# symbol_prefix is not set, copy the empty mangling header
cp -p $SRCDIR/zlib_name_mangling.h.empty zlib_name_mangling${SUFFIX}.h
fi
# copy clean zconf.h for subsequent edits
cp -p $SRCDIR/zconf${SUFFIX}.h.in zconf${SUFFIX}.h
echo >> configure.log
# check for unistd.h and save result in zconf.h
cat > $test.c <<EOF
#include <unistd.h>
int main() { return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
sed < zconf${SUFFIX}.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf${SUFFIX}.temp.h
mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h
echo "Checking for unistd.h... Yes." | tee -a configure.log
else
sed < zconf${SUFFIX}.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be set to #if 1/ 0\1 was set to #if 0/" > zconf${SUFFIX}.temp.h
mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h
echo "Checking for unistd.h... No." | tee -a configure.log
fi
echo >> configure.log
# check for ptrdiff_t and save result in zconf.h
echo -n "Checking for ptrdiff_t... " | tee -a configure.log
cat > $test.c <<EOF
#include <stddef.h>
int fun(ptrdiff_t *a) { (void)a; return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Yes." | tee -a configure.log
else
echo "No." | tee -a configure.log
sed < zconf${SUFFIX}.h "/^#ifdef NEED_PTRDIFF_T.* may be/s/def NEED_PTRDIFF_T\(.*\) may be/ 1\1 was/" > zconf${SUFFIX}.temp.h
mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h
echo -n "Checking for sizeof(void *)... " | tee -a configure.log
cat > $test.c <<EOF
#include <stdint.h>
#define COMPILE_TIME_ASSERT(pred) struct s { int x: (pred) ? 1 : -1; }
COMPILE_TIME_ASSERT(sizeof(int32_t) == sizeof(void *));
EOF
if try $CC -c $CFLAGS $test.c; then
echo "sizeof(int32_t)." | tee -a configure.log
sed < zconf${SUFFIX}.h "s/^typedef PTRDIFF_TYPE ptrdiff_t;/typedef int32_t ptrdiff_t;/g" > zconf${SUFFIX}.temp.h
mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h
else
cat > $test.c <<EOF
#include <stdint.h>
#define COMPILE_TIME_ASSERT(pred) struct s { int x: (pred) ? 1 : -1; }
COMPILE_TIME_ASSERT(sizeof(int64_t) == sizeof(void *));
EOF
if try $CC -c $CFLAGS $test.c; then
echo "sizeof(int64_t)." | tee -a configure.log
sed < zconf${SUFFIX}.h "s/^typedef PTRDIFF_TYPE ptrdiff_t;/typedef int64_t ptrdiff_t;/g" > zconf${SUFFIX}.temp.h
mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h
else
echo "unknown." | tee -a configure.log
exit 1
fi
fi
fi
# if --zlib-compat was requested
if test $compat -eq 1; then
gzfileops=1
CFLAGS="${CFLAGS} -DZLIB_COMPAT"
SFLAGS="${SFLAGS} -DZLIB_COMPAT"
case "$uname" in
CYGWIN* | Cygwin* | cygwin* | MSYS* | msys* | MINGW* | mingw*)
DEFFILE="win32/zlibcompat.def" ;;
esac
fi
if [[ ! -z $DEFFILE ]]; then
mkdir -p win32
sed < $SRCDIR/$DEFFILE.in "s/@ZLIB_SYMBOL_PREFIX@/$symbol_prefix/g" > $DEFFILE
fi
# if --gzfileops was requested
if test $gzfileops -eq 1; then
CFLAGS="${CFLAGS} -DWITH_GZFILEOP"
SFLAGS="${SFLAGS} -DWITH_GZFILEOP"
OBJC="${OBJC} \$(OBJG)"
PIC_OBJC="${PIC_OBJC} \$(PIC_OBJG)"
else
TESTOBJG="\$(OBJG)"
PIC_TESTOBJG="\$(OBJG)"
fi
# set architecture alignment requirements
if test $unalignedok -eq 0; then
CFLAGS="${CFLAGS} -DNO_UNALIGNED"
SFLAGS="${SFLAGS} -DNO_UNALIGNED"
echo "Unaligned reads manually disabled." | tee -a configure.log
fi
# enable reduced memory configuration
if test $reducedmem -eq 1; then
echo "Configuring for reduced memory environment." | tee -a configure.log
CFLAGS="${CFLAGS} -DHASH_SIZE=32768u -DGZBUFSIZE=8192"
fi
# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
if test $cover -eq 1; then
CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
LDFLAGS="${LDFLAGS} -fprofile-arcs -ftest-coverage"
if test -n "$GCC_CLASSIC"; then
CC=$GCC_CLASSIC
fi
fi
echo >> configure.log
# Check for ANSI C compliant compiler
cat > $test.c <<EOF
#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include "zconf${SUFFIX}.h"
int main() {
#ifdef STDC
return 0;
#endif
return 1;
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for ANSI C compliant compiler... Yes." | tee -a configure.log
:
else
echo "Checking for ANSI C compliant compiler... No." | tee -a configure.log
echo "Error: ANSI C compatible compiler needed, cannot continue." | tee -a configure.log
leave 1
fi
# Check for -fno-semantic-interposition compiler support
echo "" > test.c
cat > $test.c <<EOF
int main() { return 0; }
EOF
if test "$gcc" -eq 1 && ($cc $CFLAGS -fno-semantic-interposition -c $test.c) >> configure.log 2>&1; then
echo "Checking for -fno-semantic-interposition... Yes." | tee -a configure.log
SFLAGS="$SFLAGS -fno-semantic-interposition"
else
echo "Checking for -fno-semantic-interposition... No." | tee -a configure.log
fi
# Check for -fno-lto compiler support
if test $gcc -eq 1 -a $without_optimizations -eq 0 -a $native -eq 0; then
cat > $test.c <<EOF
int main() { return 0; }
EOF
if $cc $CFLAGS -fno-lto -c $test.c >> configure.log 2>&1; then
echo "Checking for -fno-lto... Yes." | tee -a configure.log
else
echo "Checking for -fno-lto... No." | tee -a configure.log
noltoflag=""
fi
fi
# see if we can hide zlib internal symbols that are linked between separate source files using hidden
if test "$gcc" -eq 1 && test "$visibility" -eq 1; then
echo >> configure.log
cat > $test.c <<EOF
#define Z_INTERNAL __attribute__((visibility ("hidden")))
int Z_INTERNAL foo;
int main() { return 0; }
EOF
if try $CC $CFLAGS $test.c; then
CFLAGS="$CFLAGS -DHAVE_VISIBILITY_HIDDEN"
SFLAGS="$SFLAGS -DHAVE_VISIBILITY_HIDDEN"
echo >> configure.log
echo "Checking for attribute(visibility(hidden)) support... Yes." | tee -a configure.log
else
echo >> configure.log
echo "Checking for attribute(visibility(hidden)) support... No." | tee -a configure.log
fi
fi
# see if we can hide zlib internal symbols that are linked between separate source files using internal
if test "$gcc" -eq 1 && test "$visibility" -eq 1; then
echo >> configure.log
cat > $test.c <<EOF
#define Z_INTERNAL __attribute__((visibility ("internal")))
int Z_INTERNAL foo;
int main() { return 0; }
EOF
if try $CC $CFLAGS $test.c; then
CFLAGS="$CFLAGS -DHAVE_VISIBILITY_INTERNAL"
SFLAGS="$SFLAGS -DHAVE_VISIBILITY_INTERNAL"
echo >> configure.log
echo "Checking for attribute(visibility(internal)) support... Yes." | tee -a configure.log
else
echo >> configure.log
echo "Checking for attribute(visibility(internal)) support... No." | tee -a configure.log
fi
fi
# Check for attribute(aligned) support in compiler
cat > $test.c << EOF
int main(void) {
__attribute__((aligned(8))) int test = 0;
(void)test;
return 0;
}
EOF
if try ${CC} ${CFLAGS} $test.c $LDSHAREDLIBC; then