#!/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=${AR-"ar"} AR_RC="${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 zprefix=0 gcc=0 old_cc="$CC" old_cflags="$CFLAGS" while test $# -ge 1 do case "$1" in -h* | --help) echo 'usage:' echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]' echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR] [--zprefix]' exit 0;; -p*=* | --prefix=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; -e*=* | --eprefix=*) 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* | --prefix) prefix="$2"; shift; shift;; -e* | --eprefix) exec_prefix="$2"; shift; shift;; -l* | --libdir) libdir="$2"; shift; shift;; -i* | --includedir) includedir="$2"; shift; shift;; -s* | --shared | --enable-shared) shared=1; shift;; -z* | --zprefix) zprefix=1; shift;; --sysconfdir=*) echo "ignored option: --sysconfdir"; shift;; --localstatedir=*) echo "ignored option: --localstatedir"; shift;; *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;; esac done test=ztest$$ cat > $test.c </dev/null; then CC="$cc" SFLAGS="${CFLAGS-"-O3"} -fPIC" CFLAGS="$cflags" case `(uname -s || echo unknown) 2>/dev/null` in Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"};; 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=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"};; OSF1\ V4*) SFLAGS=${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=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"};; QNX*) SFLAGS=${CFLAGS-"-4 -O"} CFLAGS=${CFLAGS-"-4 -O"} LDSHARED=${LDSHARED-"cc"} RANLIB=${RANLIB-"true"} AR_RC="cc -A";; SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} CFLAGS=${CFLAGS-"-O3"} LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; SunOS\ 5*) LDSHARED=${LDSHARED-"cc -G"} case `(uname -m || echo unknown) 2>/dev/null` in i86*) SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."} CFLAGS=${CFLAGS-"-xpentium -fast"};; *) SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."} CFLAGS=${CFLAGS-"-fast -xcg92"};; esac;; SunOS\ 4*) SFLAGS=${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 Tested $CC -c $SFLAGS $test.c $CC -c $SFLAGS $test.c echo Tested $LDSHARED -o $test$shared_ext $test.o $LDSHARED -o $test$shared_ext $test.o 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 > $test.c < int main() { return 0; } EOF if test "`($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 if test $zprefix -eq 1; then sed < zconf.h "/#ifdef Z_PREFIX/s/def Z_PREFIX/ 1/" > zconf.temp.h mv zconf.temp.h zconf.h echo "Using z_ prefix on all symbols." fi cat > $test.c < #include #include "zconf.h" int main() { #ifndef STDC choke me #endif return 0; } EOF if test "`($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 > $test.c < #include int mytest(char *fmt, ...) { char buf[20]; va_list ap; va_start(ap, fmt); vsnprintf(buf, sizeof(buf), fmt, ap); va_end(ap); return 0; } int main() { return (mytest("Hello%d\n", 1)); } EOF if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then echo "Checking for vsnprintf() in stdio.h... Yes." cat >$test.c < #include 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 < #include 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 >$test.c < int mytest() { char buf[20]; snprintf(buf, sizeof(buf), "%s", "foo"); return 0; } int main() { return (mytest()); } EOF if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then echo "Checking for snprintf() in stdio.h... Yes." cat >$test.c < 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 < 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 >$test.c < int main() { return 0; } EOF if test "`($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 > $test.c < #include #include caddr_t hello() { return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); } EOF if test "`($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#=.*#=$AR_RC# /^RANLIB *=/s#=.*#=$RANLIB# /^EXE *=/s#=.*#=$EXE# /^prefix *=/s#=.*#=$prefix# /^exec_prefix *=/s#=.*#=$exec_prefix# /^libdir *=/s#=.*#=$libdir# /^includedir *=/s#=.*#=$includedir# /^mandir *=/s#=.*#=$mandir# /^LDFLAGS *=/s#=.*#=$LDFLAGS# " > Makefile sed < zlib.pc.in " /^CC *=/s#=.*#=$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_RC# /^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# " | sed -e " s/\@VERSION\@/$VER/g; " > zlib.pc