| 1 | #!/bin/sh
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| 2 | # configure script for zlib. This script is needed only if
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| 3 | # you wish to build a shared library and your system supports them,
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| 4 | # of if you need special compiler, flags or install directory.
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| 5 | # Otherwise, you can just use directly "make test; make install"
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| 6 | #
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| 7 | # To create a shared library, use "configure --shared"; by default a static
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| 8 | # library is created. If the primitive shared library support provided here
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| 9 | # does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz
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| 10 | #
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| 11 | # To impose specific compiler or flags or install directory, use for example:
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| 12 | # prefix=$HOME CC=cc CFLAGS="-O4" ./configure
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| 13 | # or for csh/tcsh users:
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| 14 | # (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
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| 15 | # LDSHARED is the command to be used to create a shared library
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| 16 |
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| 17 | # Incorrect settings of CC or CFLAGS may prevent creating a shared library.
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| 18 | # If you have problems, try without defining CC and CFLAGS before reporting
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| 19 | # an error.
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| 20 |
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| 21 | LIBS=libz.a
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| 22 | LDFLAGS="-L. ${LIBS}"
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| 23 | VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
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| 24 | VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
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| 25 | VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
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| 26 | AR=${AR-"ar rc"}
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| 27 | RANLIB=${RANLIB-"ranlib"}
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| 28 | prefix=${prefix-/usr/local}
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| 29 | exec_prefix=${exec_prefix-'${prefix}'}
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| 30 | libdir=${libdir-'${exec_prefix}/lib'}
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| 31 | includedir=${includedir-'${prefix}/include'}
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| 32 | mandir=${mandir-'${prefix}/share/man'}
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| 33 | shared_ext='.so'
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| 34 | shared=0
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| 35 | gcc=0
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| 36 | old_cc="$CC"
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| 37 | old_cflags="$CFLAGS"
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| 38 |
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| 39 | while test $# -ge 1
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| 40 | do
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| 41 | case "$1" in
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| 42 | -h* | --h*)
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| 43 | echo 'usage:'
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| 44 | echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]'
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| 45 | echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
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| 46 | exit 0;;
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| 47 | -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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| 48 | -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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| 49 | -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
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| 50 | -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
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| 51 | -p* | --p*) prefix="$2"; shift; shift;;
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| 52 | -e* | --e*) exec_prefix="$2"; shift; shift;;
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| 53 | -l* | --l*) libdir="$2"; shift; shift;;
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| 54 | -i* | --i*) includedir="$2"; shift; shift;;
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| 55 | -s* | --s*) shared=1; shift;;
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| 56 | *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
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| 57 | esac
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| 58 | done
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| 59 |
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| 60 | test=ztest$$
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| 61 | cat > $test.c <<EOF
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| 62 | extern int getchar();
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| 63 | int hello() {return getchar();}
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| 64 | EOF
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| 65 |
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| 66 | test -z "$CC" && echo Checking for gcc...
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| 67 | cc=${CC-gcc}
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| 68 | cflags=${CFLAGS-"-O3"}
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| 69 | # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
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| 70 | case "$cc" in
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| 71 | *gcc*) gcc=1;;
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| 72 | esac
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| 73 |
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| 74 | if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
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| 75 | CC="$cc"
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| 76 | SFLAGS=${CFLAGS-"-fPIC -O3"}
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| 77 | CFLAGS="$cflags"
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| 78 | case `(uname -s || echo unknown) 2>/dev/null` in
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| 79 | Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
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| 80 | CYGWIN* | Cygwin* | cygwin* )
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| 81 | EXE='.exe';;
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| 82 | QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
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| 83 | # (alain.bonnefoy@icbt.com)
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| 84 | LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;
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| 85 | HP-UX*) LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
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| 86 | shared_ext='.sl'
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| 87 | SHAREDLIB='libz.sl';;
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| 88 | Darwin*) shared_ext='.dylib'
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| 89 | SHAREDLIB=libz$shared_ext
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| 90 | SHAREDLIBV=libz.$VER$shared_ext
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| 91 | SHAREDLIBM=libz.$VER1$shared_ext
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| 92 | LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name /usr/lib/$SHAREDLIBV -compatibility_version $VER2 -current_version $VER"}
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| 93 | libdir='/usr/lib'
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| 94 | includedir='/usr/include';;
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| 95 | *) LDSHARED=${LDSHARED-"$cc -shared"};;
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| 96 | esac
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| 97 | else
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| 98 | # find system name and corresponding cc options
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| 99 | CC=${CC-cc}
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| 100 | case `(uname -sr || echo unknown) 2>/dev/null` in
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| 101 | HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
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| 102 | CFLAGS=${CFLAGS-"-O"}
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| 103 | # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
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| 104 | LDSHARED=${LDSHARED-"ld -b"}
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| 105 | shared_ext='.sl'
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| 106 | SHAREDLIB='libz.sl';;
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| 107 | IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
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| 108 | CFLAGS=${CFLAGS-"-ansi -O2"}
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| 109 | LDSHARED=${LDSHARED-"cc -shared"};;
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| 110 | OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
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| 111 | CFLAGS=${CFLAGS-"-O -std1"}
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| 112 | LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
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| 113 | OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
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| 114 | CFLAGS=${CFLAGS-"-O -std1"}
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| 115 | LDSHARED=${LDSHARED-"cc -shared"};;
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| 116 | QNX*) SFLAGS=${CFLAGS-"-4 -O"}
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| 117 | CFLAGS=${CFLAGS-"-4 -O"}
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| 118 | LDSHARED=${LDSHARED-"cc"}
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| 119 | RANLIB=${RANLIB-"true"}
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| 120 | AR="cc -A";;
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| 121 | SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
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| 122 | CFLAGS=${CFLAGS-"-O3"}
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| 123 | LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
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| 124 | SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
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| 125 | CFLAGS=${CFLAGS-"-fast -xcg89"}
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| 126 | LDSHARED=${LDSHARED-"cc -G"};;
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| 127 | SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
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| 128 | CFLAGS=${CFLAGS-"-O2"}
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| 129 | LDSHARED=${LDSHARED-"ld"};;
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| 130 | UNIX_System_V\ 4.2.0)
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| 131 | SFLAGS=${CFLAGS-"-KPIC -O"}
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| 132 | CFLAGS=${CFLAGS-"-O"}
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| 133 | LDSHARED=${LDSHARED-"cc -G"};;
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| 134 | UNIX_SV\ 4.2MP)
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| 135 | SFLAGS=${CFLAGS-"-Kconform_pic -O"}
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| 136 | CFLAGS=${CFLAGS-"-O"}
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| 137 | LDSHARED=${LDSHARED-"cc -G"};;
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| 138 | OpenUNIX\ 5)
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| 139 | SFLAGS=${CFLAGS-"-KPIC -O"}
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| 140 | CFLAGS=${CFLAGS-"-O"}
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| 141 | LDSHARED=${LDSHARED-"cc -G"};;
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| 142 | AIX*) # Courtesy of dbakker@arrayasolutions.com
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| 143 | SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
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| 144 | CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
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| 145 | LDSHARED=${LDSHARED-"xlc -G"};;
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| 146 | # send working options for other systems to support@gzip.org
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| 147 | *) SFLAGS=${CFLAGS-"-O"}
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| 148 | CFLAGS=${CFLAGS-"-O"}
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| 149 | LDSHARED=${LDSHARED-"cc -shared"};;
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| 150 | esac
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| 151 | fi
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| 152 |
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| 153 | SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
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| 154 | SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
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| 155 | SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
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| 156 |
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| 157 | if test $shared -eq 1; then
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| 158 | echo Checking for shared library support...
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| 159 | # we must test in two steps (cc then ld), required at least on SunOS 4.x
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| 160 | if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
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| 161 | test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
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| 162 | CFLAGS="$SFLAGS"
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| 163 | LIBS="$SHAREDLIBV"
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| 164 | echo Building shared library $SHAREDLIBV with $CC.
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| 165 | elif test -z "$old_cc" -a -z "$old_cflags"; then
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| 166 | echo No shared library support.
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| 167 | shared=0;
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| 168 | else
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| 169 | echo 'No shared library support; try without defining CC and CFLAGS'
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| 170 | shared=0;
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| 171 | fi
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| 172 | fi
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| 173 | if test $shared -eq 0; then
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| 174 | LDSHARED="$CC"
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| 175 | echo Building static library $LIBS version $VER with $CC.
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| 176 | else
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| 177 | LDFLAGS="-L. ${SHAREDLIBV}"
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| 178 | fi
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| 179 |
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| 180 | cat > $test.c <<EOF
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| 181 | #include <unistd.h>
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| 182 | int main() { return 0; }
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| 183 | EOF
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| 184 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 185 | sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h
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| 186 | echo "Checking for unistd.h... Yes."
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| 187 | else
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| 188 | cp -p zconf.in.h zconf.h
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| 189 | echo "Checking for unistd.h... No."
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| 190 | fi
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| 191 |
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| 192 | cat > $test.c <<EOF
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| 193 | #include <stdio.h>
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| 194 | #include <stdarg.h>
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| 195 | #include "zconf.h"
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| 196 |
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| 197 | int main()
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| 198 | {
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| 199 | #ifndef STDC
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| 200 | choke me
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| 201 | #endif
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| 202 |
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| 203 | return 0;
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| 204 | }
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| 205 | EOF
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| 206 |
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| 207 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 208 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()"
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| 209 |
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| 210 | cat > $test.c <<EOF
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| 211 | #include <stdio.h>
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| 212 | #include <stdarg.h>
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| 213 |
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| 214 | int mytest(char *fmt, ...)
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| 215 | {
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| 216 | char buf[20];
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| 217 | va_list ap;
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| 218 |
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| 219 | va_start(ap, fmt);
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| 220 | vsnprintf(buf, sizeof(buf), fmt, ap);
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| 221 | va_end(ap);
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| 222 | return 0;
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| 223 | }
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| 224 |
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| 225 | int main()
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| 226 | {
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| 227 | return (mytest("Hello%d\n", 1));
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| 228 | }
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| 229 | EOF
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| 230 |
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| 231 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
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| 232 | echo "Checking for vsnprintf() in stdio.h... Yes."
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| 233 |
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| 234 | cat >$test.c <<EOF
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| 235 | #include <stdio.h>
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| 236 | #include <stdarg.h>
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| 237 |
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| 238 | int mytest(char *fmt, ...)
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| 239 | {
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| 240 | int n;
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| 241 | char buf[20];
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| 242 | va_list ap;
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| 243 |
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| 244 | va_start(ap, fmt);
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| 245 | n = vsnprintf(buf, sizeof(buf), fmt, ap);
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| 246 | va_end(ap);
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| 247 | return n;
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| 248 | }
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| 249 |
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| 250 | int main()
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| 251 | {
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| 252 | return (mytest("Hello%d\n", 1));
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| 253 | }
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| 254 | EOF
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| 255 |
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| 256 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 257 | echo "Checking for return value of vsnprintf()... Yes."
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| 258 | else
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| 259 | CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
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| 260 | echo "Checking for return value of vsnprintf()... No."
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| 261 | echo " WARNING: apparently vsnprintf() does not return a value. zlib"
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| 262 | echo " can build but will be open to possible string-format security"
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| 263 | echo " vulnerabilities."
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| 264 | fi
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| 265 | else
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| 266 | CFLAGS="$CFLAGS -DNO_vsnprintf"
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| 267 | echo "Checking for vsnprintf() in stdio.h... No."
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| 268 | echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
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| 269 | echo " can build but will be open to possible buffer-overflow security"
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| 270 | echo " vulnerabilities."
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| 271 |
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| 272 | cat >$test.c <<EOF
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| 273 | #include <stdio.h>
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| 274 | #include <stdarg.h>
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| 275 |
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| 276 | int mytest(char *fmt, ...)
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| 277 | {
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| 278 | int n;
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| 279 | char buf[20];
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| 280 | va_list ap;
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| 281 |
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| 282 | va_start(ap, fmt);
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| 283 | n = vsprintf(buf, fmt, ap);
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| 284 | va_end(ap);
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| 285 | return n;
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| 286 | }
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| 287 |
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| 288 | int main()
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| 289 | {
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| 290 | return (mytest("Hello%d\n", 1));
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| 291 | }
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| 292 | EOF
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| 293 |
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| 294 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 295 | echo "Checking for return value of vsprintf()... Yes."
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| 296 | else
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| 297 | CFLAGS="$CFLAGS -DHAS_vsprintf_void"
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| 298 | echo "Checking for return value of vsprintf()... No."
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| 299 | echo " WARNING: apparently vsprintf() does not return a value. zlib"
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| 300 | echo " can build but will be open to possible string-format security"
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| 301 | echo " vulnerabilities."
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| 302 | fi
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| 303 | fi
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| 304 | else
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| 305 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()"
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| 306 |
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| 307 | cat >$test.c <<EOF
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| 308 | #include <stdio.h>
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| 309 |
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| 310 | int mytest()
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| 311 | {
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| 312 | char buf[20];
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| 313 |
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| 314 | snprintf(buf, sizeof(buf), "%s", "foo");
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| 315 | return 0;
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| 316 | }
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| 317 |
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| 318 | int main()
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| 319 | {
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| 320 | return (mytest());
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| 321 | }
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| 322 | EOF
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| 323 |
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| 324 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
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| 325 | echo "Checking for snprintf() in stdio.h... Yes."
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| 326 |
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| 327 | cat >$test.c <<EOF
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| 328 | #include <stdio.h>
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| 329 |
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| 330 | int mytest()
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| 331 | {
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| 332 | char buf[20];
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| 333 |
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| 334 | return snprintf(buf, sizeof(buf), "%s", "foo");
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| 335 | }
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| 336 |
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| 337 | int main()
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| 338 | {
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| 339 | return (mytest());
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| 340 | }
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| 341 | EOF
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| 342 |
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| 343 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 344 | echo "Checking for return value of snprintf()... Yes."
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| 345 | else
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| 346 | CFLAGS="$CFLAGS -DHAS_snprintf_void"
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| 347 | echo "Checking for return value of snprintf()... No."
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| 348 | echo " WARNING: apparently snprintf() does not return a value. zlib"
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| 349 | echo " can build but will be open to possible string-format security"
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| 350 | echo " vulnerabilities."
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| 351 | fi
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| 352 | else
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| 353 | CFLAGS="$CFLAGS -DNO_snprintf"
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| 354 | echo "Checking for snprintf() in stdio.h... No."
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| 355 | echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"
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| 356 | echo " can build but will be open to possible buffer-overflow security"
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| 357 | echo " vulnerabilities."
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| 358 |
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| 359 | cat >$test.c <<EOF
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| 360 | #include <stdio.h>
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| 361 |
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| 362 | int mytest()
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| 363 | {
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| 364 | char buf[20];
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| 365 |
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| 366 | return sprintf(buf, "%s", "foo");
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| 367 | }
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| 368 |
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| 369 | int main()
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| 370 | {
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| 371 | return (mytest());
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| 372 | }
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| 373 | EOF
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| 374 |
|
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| 375 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 376 | echo "Checking for return value of sprintf()... Yes."
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| 377 | else
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| 378 | CFLAGS="$CFLAGS -DHAS_sprintf_void"
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| 379 | echo "Checking for return value of sprintf()... No."
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| 380 | echo " WARNING: apparently sprintf() does not return a value. zlib"
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| 381 | echo " can build but will be open to possible string-format security"
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| 382 | echo " vulnerabilities."
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| 383 | fi
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| 384 | fi
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| 385 | fi
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| 386 |
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| 387 | cat >$test.c <<EOF
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| 388 | #include <errno.h>
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| 389 | int main() { return 0; }
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| 390 | EOF
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| 391 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 392 | echo "Checking for errno.h... Yes."
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| 393 | else
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| 394 | echo "Checking for errno.h... No."
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| 395 | CFLAGS="$CFLAGS -DNO_ERRNO_H"
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| 396 | fi
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| 397 |
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| 398 | cat > $test.c <<EOF
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| 399 | #include <sys/types.h>
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| 400 | #include <sys/mman.h>
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| 401 | #include <sys/stat.h>
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| 402 | caddr_t hello() {
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| 403 | return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
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| 404 | }
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| 405 | EOF
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| 406 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
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| 407 | CFLAGS="$CFLAGS -DUSE_MMAP"
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| 408 | echo Checking for mmap support... Yes.
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| 409 | else
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| 410 | echo Checking for mmap support... No.
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| 411 | fi
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| 412 |
|
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| 413 | CPP=${CPP-"$CC -E"}
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| 414 | case $CFLAGS in
|
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| 415 | *ASMV*)
|
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| 416 | if test "`nm $test.o | grep _hello`" = ""; then
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| 417 | CPP="$CPP -DNO_UNDERLINE"
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| 418 | echo Checking for underline in external names... No.
|
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| 419 | else
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| 420 | echo Checking for underline in external names... Yes.
|
|---|
| 421 | fi;;
|
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| 422 | esac
|
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| 423 |
|
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| 424 | rm -f $test.[co] $test $test$shared_ext
|
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| 425 |
|
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| 426 | # udpate Makefile
|
|---|
| 427 | sed < Makefile.in "
|
|---|
| 428 | /^CC *=/s#=.*#=$CC#
|
|---|
| 429 | /^CFLAGS *=/s#=.*#=$CFLAGS#
|
|---|
| 430 | /^CPP *=/s#=.*#=$CPP#
|
|---|
| 431 | /^LDSHARED *=/s#=.*#=$LDSHARED#
|
|---|
| 432 | /^LIBS *=/s#=.*#=$LIBS#
|
|---|
| 433 | /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
|
|---|
| 434 | /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
|
|---|
| 435 | /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
|
|---|
| 436 | /^AR *=/s#=.*#=$AR#
|
|---|
| 437 | /^RANLIB *=/s#=.*#=$RANLIB#
|
|---|
| 438 | /^EXE *=/s#=.*#=$EXE#
|
|---|
| 439 | /^prefix *=/s#=.*#=$prefix#
|
|---|
| 440 | /^exec_prefix *=/s#=.*#=$exec_prefix#
|
|---|
| 441 | /^libdir *=/s#=.*#=$libdir#
|
|---|
| 442 | /^includedir *=/s#=.*#=$includedir#
|
|---|
| 443 | /^mandir *=/s#=.*#=$mandir#
|
|---|
| 444 | /^LDFLAGS *=/s#=.*#=$LDFLAGS#
|
|---|
| 445 | " > Makefile
|
|---|
