#!/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 SHAREDLIB=libz.so VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` AR=${AR-"ar rc"} RANLIB=${RANLIB-"ranlib"} prefix=${prefix-/usr/local} shared_ext='.so' shared=0 gcc=0 old_cc="$CC" old_cflags="$CFLAGS" case "$1" in -h* | --h*) echo 'syntax: configure [ --shared ] [--prefix PREFIX]'; exit 0;; -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; -p* | --p*) prefix="$2"; shift; shift;; -s* | --s*) shared=1; shift;; esac 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"} 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) LDSHARED=${LDSHARED-"gcc -shared -Wl,-soname,libz.so.1"};; *) LDSHARED=${LDSHARED-"gcc -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=${LDSHARED-"ld -b"} shared_ext='.sl' SHAREDLIB='libz.sl';; IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} CFLAGS=${CFLAGS-"-ansi -O2"} LDSHARED=${LDSHARED-"cc -shared"};; 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"};; 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"};; # send working options for other systems to support@gzip.org *) SFLAGS=${CFLAGS-"-O"} CFLAGS=${CFLAGS-"-O"} LDSHARED=${LDSHARED-"cc -shared"};; esac fi 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="$SHAREDLIB.$VER" echo Building shared library $SHAREDLIB.$VER with $CC. elif test -z "$old_cc" -a -z "$old_cflags"; then echo No shared library suppport. shared=0; else echo 'No shared library suppport; 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 $CC. fi if test -f /usr/include/unistd.h; then CFLAGS="$CFLAGS -DHAVE_UNISTD_H" fi if test ! -f /usr/include/errno.h; then 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 rm -f $test.[co] $test$shared_ext # udpate Makefile sed < Makefile.in " /^CC *=/s%=.*%=$CC% /^CFLAGS *=/s%=.*%=$CFLAGS% /^LDSHARED *=/s%=.*%=$LDSHARED% /^LIBS *=/s%=.*%=$LIBS% /^SHAREDLIB *=/s%=.*%=$SHAREDLIB% /^AR *=/s%=.*%=$AR% /^RANLIB *=/s%=.*%=$RANLIB% /^VER *=/s%=.*%=$VER% /^prefix *=/s%=.*%=$prefix% " > Makefile