#!/bin/sh | |
# configure script for zlib. This script is needed only if | |
# you wish to build a shared library and your system supports them, | |
# of if you need special compiler, flags or install directory. | |
# Otherwise, you can just use directly "make test; make install" | |
# | |
# To create a shared library, use "configure --shared"; by default a static | |
# library is created. If the primitive shared library support provided here | |
# does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz | |
# | |
# 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) | |
# LDSHARED is the command to be used to create a shared library | |
# 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. | |
LIBS=libz.a | |
LDFLAGS="-L. ${LIBS}" | |
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` | |
VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h` | |
VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h` | |
AR=${AR-"ar rc"} | |
RANLIB=${RANLIB-"ranlib"} | |
prefix=${prefix-/usr/local} | |
exec_prefix=${exec_prefix-'${prefix}'} | |
libdir=${libdir-'${exec_prefix}/lib'} | |
includedir=${includedir-'${prefix}/include'} | |
mandir=${mandir-'${prefix}/share/man'} | |
shared_ext='.so' | |
shared=0 | |
gcc=0 | |
old_cc="$CC" | |
old_cflags="$CFLAGS" | |
while test $# -ge 1 | |
do | |
case "$1" in | |
-h* | --h*) | |
echo 'usage:' | |
echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]' | |
echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]' | |
exit 0;; | |
-p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; | |
-e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; | |
-l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; | |
-i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;; | |
-p* | --p*) prefix="$2"; shift; shift;; | |
-e* | --e*) exec_prefix="$2"; shift; shift;; | |
-l* | --l*) libdir="$2"; shift; shift;; | |
-i* | --i*) includedir="$2"; shift; shift;; | |
-s* | --s*) shared=1; shift;; | |
*) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;; | |
esac | |
done | |
test=ztest$$ | |
cat > $test.c <<EOF | |
extern int getchar(); | |
int hello() {return getchar();} | |
EOF | |
test -z "$CC" && echo Checking for gcc... | |
cc=${CC-gcc} | |
cflags=${CFLAGS-"-O3"} | |
# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure | |
case "$cc" in | |
*gcc*) gcc=1;; | |
esac | |
if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then | |
CC="$cc" | |
SFLAGS=${CFLAGS-"-fPIC -O3"} | |
CFLAGS="$cflags" | |
case `(uname -s || echo unknown) 2>/dev/null` in | |
Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};; | |
CYGWIN* | Cygwin* | cygwin* | OS/2* ) | |
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 -shared -Wl,-hlibz.so.1"};; | |
HP-UX*) | |
LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} | |
case `(uname -m || echo unknown) 2>/dev/null` in | |
ia64) | |
shared_ext='.so' | |
SHAREDLIB='libz.so';; | |
*) | |
shared_ext='.sl' | |
SHAREDLIB='libz.sl';; | |
esac;; | |
Darwin*) shared_ext='.dylib' | |
SHAREDLIB=libz$shared_ext | |
SHAREDLIBV=libz.$VER$shared_ext | |
SHAREDLIBM=libz.$VER1$shared_ext | |
LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};; | |
*) LDSHARED=${LDSHARED-"$cc -shared"};; | |
esac | |
else | |
# find system name and corresponding cc options | |
CC=${CC-cc} | |
case `(uname -sr || echo unknown) 2>/dev/null` in | |
HP-UX*) SFLAGS=${CFLAGS-"-O +z"} | |
CFLAGS=${CFLAGS-"-O"} | |
# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} | |
LDSHARED=${LDSHARED-"ld -b"} | |
case `(uname -m || echo unknown) 2>/dev/null` in | |
ia64) | |
shared_ext='.so' | |
SHAREDLIB='libz.so';; | |
*) | |
shared_ext='.sl' | |
SHAREDLIB='libz.sl';; | |
esac;; | |
IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} | |
CFLAGS=${CFLAGS-"-ansi -O2"} | |
LDSHARED=${LDSHARED-"cc -shared"};; | |
OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} | |
CFLAGS=${CFLAGS-"-O -std1"} | |
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};; | |
OSF1*) SFLAGS=${CFLAGS-"-O -std1"} | |
CFLAGS=${CFLAGS-"-O -std1"} | |
LDSHARED=${LDSHARED-"cc -shared"};; | |
QNX*) SFLAGS=${CFLAGS-"-4 -O"} | |
CFLAGS=${CFLAGS-"-4 -O"} | |
LDSHARED=${LDSHARED-"cc"} | |
RANLIB=${RANLIB-"true"} | |
AR="cc -A";; | |
SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} | |
CFLAGS=${CFLAGS-"-O3"} | |
LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; | |
SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."} | |
CFLAGS=${CFLAGS-"-fast -xcg89"} | |
LDSHARED=${LDSHARED-"cc -G"};; | |
SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} | |
CFLAGS=${CFLAGS-"-O2"} | |
LDSHARED=${LDSHARED-"ld"};; | |
SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} | |
CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"} | |
LDSHARED=${LDSHARED-"cc -xarch=v9b"};; | |
UNIX_System_V\ 4.2.0) | |
SFLAGS=${CFLAGS-"-KPIC -O"} | |
CFLAGS=${CFLAGS-"-O"} | |
LDSHARED=${LDSHARED-"cc -G"};; | |
UNIX_SV\ 4.2MP) | |
SFLAGS=${CFLAGS-"-Kconform_pic -O"} | |
CFLAGS=${CFLAGS-"-O"} | |
LDSHARED=${LDSHARED-"cc -G"};; | |
OpenUNIX\ 5) | |
SFLAGS=${CFLAGS-"-KPIC -O"} | |
CFLAGS=${CFLAGS-"-O"} | |
LDSHARED=${LDSHARED-"cc -G"};; | |
AIX*) # Courtesy of dbakker@arrayasolutions.com | |
SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} | |
CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} | |
LDSHARED=${LDSHARED-"xlc -G"};; | |
# send working options for other systems to support@gzip.org | |
*) SFLAGS=${CFLAGS-"-O"} | |
CFLAGS=${CFLAGS-"-O"} | |
LDSHARED=${LDSHARED-"cc -shared"};; | |
esac | |
fi | |
SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} | |
SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} | |
SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} | |
if test $shared -eq 1; then | |
echo Checking for shared library support... | |
# we must test in two steps (cc then ld), required at least on SunOS 4.x | |
if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" && | |
test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then | |
CFLAGS="$SFLAGS" | |
LIBS="$SHAREDLIBV" | |
echo Building shared library $SHAREDLIBV with $CC. | |
elif test -z "$old_cc" -a -z "$old_cflags"; then | |
echo No shared library support. | |
shared=0; | |
else | |
echo 'No shared library support; try without defining CC and CFLAGS' | |
shared=0; | |
fi | |
fi | |
if test $shared -eq 0; then | |
LDSHARED="$CC" | |
echo Building static library $LIBS version $VER with $CC. | |
else | |
LDFLAGS="-L. ${SHAREDLIBV}" | |
fi | |
cat > $test.c <<EOF | |
#include <unistd.h> | |
int main() { return 0; } | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h | |
echo "Checking for unistd.h... Yes." | |
else | |
cp -p zconf.in.h zconf.h | |
echo "Checking for unistd.h... No." | |
fi | |
cat > $test.c <<EOF | |
#include <stdio.h> | |
#include <stdarg.h> | |
#include "zconf.h" | |
int main() | |
{ | |
#ifndef STDC | |
choke me | |
#endif | |
return 0; | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()" | |
cat > $test.c <<EOF | |
#include <stdio.h> | |
#include <stdarg.h> | |
int mytest(char *fmt, ...) | |
{ | |
char buf[20]; | |
va_list ap; | |
va_start(ap, fmt); | |
vsnprintf(buf, sizeof(buf), fmt, ap); | |
va_end(ap); | |
return 0; | |
} | |
int main() | |
{ | |
return (mytest("Hello%d\n", 1)); | |
} | |
EOF | |
if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then | |
echo "Checking for vsnprintf() in stdio.h... Yes." | |
cat >$test.c <<EOF | |
#include <stdio.h> | |
#include <stdarg.h> | |
int mytest(char *fmt, ...) | |
{ | |
int n; | |
char buf[20]; | |
va_list ap; | |
va_start(ap, fmt); | |
n = vsnprintf(buf, sizeof(buf), fmt, ap); | |
va_end(ap); | |
return n; | |
} | |
int main() | |
{ | |
return (mytest("Hello%d\n", 1)); | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking for return value of vsnprintf()... Yes." | |
else | |
CFLAGS="$CFLAGS -DHAS_vsnprintf_void" | |
echo "Checking for return value of vsnprintf()... No." | |
echo " WARNING: apparently vsnprintf() does not return a value. zlib" | |
echo " can build but will be open to possible string-format security" | |
echo " vulnerabilities." | |
fi | |
else | |
CFLAGS="$CFLAGS -DNO_vsnprintf" | |
echo "Checking for vsnprintf() in stdio.h... No." | |
echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | |
echo " can build but will be open to possible buffer-overflow security" | |
echo " vulnerabilities." | |
cat >$test.c <<EOF | |
#include <stdio.h> | |
#include <stdarg.h> | |
int mytest(char *fmt, ...) | |
{ | |
int n; | |
char buf[20]; | |
va_list ap; | |
va_start(ap, fmt); | |
n = vsprintf(buf, fmt, ap); | |
va_end(ap); | |
return n; | |
} | |
int main() | |
{ | |
return (mytest("Hello%d\n", 1)); | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking for return value of vsprintf()... Yes." | |
else | |
CFLAGS="$CFLAGS -DHAS_vsprintf_void" | |
echo "Checking for return value of vsprintf()... No." | |
echo " WARNING: apparently vsprintf() does not return a value. zlib" | |
echo " can build but will be open to possible string-format security" | |
echo " vulnerabilities." | |
fi | |
fi | |
else | |
echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()" | |
cat >$test.c <<EOF | |
#include <stdio.h> | |
int mytest() | |
{ | |
char buf[20]; | |
snprintf(buf, sizeof(buf), "%s", "foo"); | |
return 0; | |
} | |
int main() | |
{ | |
return (mytest()); | |
} | |
EOF | |
if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then | |
echo "Checking for snprintf() in stdio.h... Yes." | |
cat >$test.c <<EOF | |
#include <stdio.h> | |
int mytest() | |
{ | |
char buf[20]; | |
return snprintf(buf, sizeof(buf), "%s", "foo"); | |
} | |
int main() | |
{ | |
return (mytest()); | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking for return value of snprintf()... Yes." | |
else | |
CFLAGS="$CFLAGS -DHAS_snprintf_void" | |
echo "Checking for return value of snprintf()... No." | |
echo " WARNING: apparently snprintf() does not return a value. zlib" | |
echo " can build but will be open to possible string-format security" | |
echo " vulnerabilities." | |
fi | |
else | |
CFLAGS="$CFLAGS -DNO_snprintf" | |
echo "Checking for snprintf() in stdio.h... No." | |
echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | |
echo " can build but will be open to possible buffer-overflow security" | |
echo " vulnerabilities." | |
cat >$test.c <<EOF | |
#include <stdio.h> | |
int mytest() | |
{ | |
char buf[20]; | |
return sprintf(buf, "%s", "foo"); | |
} | |
int main() | |
{ | |
return (mytest()); | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking for return value of sprintf()... Yes." | |
else | |
CFLAGS="$CFLAGS -DHAS_sprintf_void" | |
echo "Checking for return value of sprintf()... No." | |
echo " WARNING: apparently sprintf() does not return a value. zlib" | |
echo " can build but will be open to possible string-format security" | |
echo " vulnerabilities." | |
fi | |
fi | |
fi | |
cat >$test.c <<EOF | |
#include <errno.h> | |
int main() { return 0; } | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
echo "Checking for errno.h... Yes." | |
else | |
echo "Checking for errno.h... No." | |
CFLAGS="$CFLAGS -DNO_ERRNO_H" | |
fi | |
cat > $test.c <<EOF | |
#include <sys/types.h> | |
#include <sys/mman.h> | |
#include <sys/stat.h> | |
caddr_t hello() { | |
return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); | |
} | |
EOF | |
if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then | |
CFLAGS="$CFLAGS -DUSE_MMAP" | |
echo Checking for mmap support... Yes. | |
else | |
echo Checking for mmap support... No. | |
fi | |
CPP=${CPP-"$CC -E"} | |
case $CFLAGS in | |
*ASMV*) | |
if test "`nm $test.o | grep _hello`" = ""; then | |
CPP="$CPP -DNO_UNDERLINE" | |
echo Checking for underline in external names... No. | |
else | |
echo Checking for underline in external names... Yes. | |
fi;; | |
esac | |
rm -f $test.[co] $test $test$shared_ext | |
# udpate Makefile | |
sed < Makefile.in " | |
/^CC *=/s#=.*#=$CC# | |
/^CFLAGS *=/s#=.*#=$CFLAGS# | |
/^CPP *=/s#=.*#=$CPP# | |
/^LDSHARED *=/s#=.*#=$LDSHARED# | |
/^LIBS *=/s#=.*#=$LIBS# | |
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# | |
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# | |
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# | |
/^AR *=/s#=.*#=$AR# | |
/^RANLIB *=/s#=.*#=$RANLIB# | |
/^EXE *=/s#=.*#=$EXE# | |
/^prefix *=/s#=.*#=$prefix# | |
/^exec_prefix *=/s#=.*#=$exec_prefix# | |
/^libdir *=/s#=.*#=$libdir# | |
/^includedir *=/s#=.*#=$includedir# | |
/^mandir *=/s#=.*#=$mandir# | |
/^LDFLAGS *=/s#=.*#=$LDFLAGS# | |
" > Makefile |