| 1 | #!/bin/sh |
| 2 | # configure script for zlib. This script is needed only if |
| 3 | # you wish to build a shared library and your system supports them, |
| 4 | # of if you need special compiler, flags or install directory. |
| 5 | # Otherwise, you can just use directly "make test; make install" |
| 6 | # |
| 7 | # To create a shared library, use "configure --shared"; by default a static |
| 8 | # library is created. If the primitive shared library support provided here |
| 9 | # does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz |
| 10 | # |
| 11 | # To impose specific compiler or flags or install directory, use for example: |
| 12 | # prefix=$HOME CC=cc CFLAGS="-O4" ./configure |
| 13 | # or for csh/tcsh users: |
| 14 | # (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure) |
| 15 | # LDSHARED is the command to be used to create a shared library |
| 16 | |
| 17 | # Incorrect settings of CC or CFLAGS may prevent creating a shared library. |
| 18 | # If you have problems, try without defining CC and CFLAGS before reporting |
| 19 | # an error. |
| 20 | |
| 21 | LIBS=libz.a |
| 22 | SHAREDLIB=libz.so |
| 23 | VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` |
| 24 | AR=${AR-"ar rc"} |
| 25 | RANLIB=${RANLIB-"ranlib"} |
| 26 | prefix=${prefix-/usr/local} |
| 27 | shared_ext='.so' |
| 28 | shared=0 |
| 29 | gcc=0 |
| 30 | old_cc="$CC" |
| 31 | old_cflags="$CFLAGS" |
| 32 | |
| 33 | case "$1" in |
| 34 | -h* | --h*) echo 'syntax: configure [ --shared ] [--prefix PREFIX]'; exit 0;; |
| 35 | -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
| 36 | -p* | --p*) prefix="$2"; shift; shift;; |
| 37 | -s* | --s*) shared=1; shift;; |
| 38 | esac |
| 39 | |
| 40 | test=ztest$$ |
| 41 | cat > $test.c <<EOF |
| 42 | extern int getchar(); |
| 43 | int hello() {return getchar();} |
| 44 | EOF |
| 45 | |
| 46 | test -z "$CC" && echo Checking for gcc... |
| 47 | cc=${CC-gcc} |
| 48 | cflags=${CFLAGS-"-O3"} |
| 49 | case "$cc" in |
| 50 | *gcc*) gcc=1;; |
| 51 | esac |
| 52 | |
| 53 | if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then |
| 54 | CC="$cc" |
| 55 | SFLAGS=${CFLAGS-"-fPIC -O3"} |
| 56 | CFLAGS="$cflags" |
| 57 | case `(uname -s || echo unknown) 2>/dev/null` in |
| 58 | Linux | linux) LDSHARED=${LDSHARED-"gcc -shared -Wl,-soname,libz.so.1"};; |
| 59 | *) LDSHARED=${LDSHARED-"gcc -shared"};; |
| 60 | esac |
| 61 | else |
| 62 | # find system name and corresponding cc options |
| 63 | CC=${CC-cc} |
| 64 | case `(uname -sr || echo unknown) 2>/dev/null` in |
| 65 | HP-UX*) SFLAGS=${CFLAGS-"-O +z"} |
| 66 | CFLAGS=${CFLAGS-"-O"} |
| 67 | # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} |
| 68 | LDSHARED=${LDSHARED-"ld -b"} |
| 69 | shared_ext='.sl' |
| 70 | SHAREDLIB='libz.sl';; |
| 71 | IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} |
| 72 | CFLAGS=${CFLAGS-"-ansi -O2"} |
| 73 | LDSHARED=${LDSHARED-"cc -shared"};; |
| 74 | OSF1) SFLAGS=${CFLAGS-"-O -std1"} |
| 75 | CFLAGS=${CFLAGS-"-O -std1"} |
| 76 | LDSHARED=${LDSHARED-"cc -shared"};; |
| 77 | QNX*) SFLAGS=${CFLAGS-"-4 -O"} |
| 78 | CFLAGS=${CFLAGS-"-4 -O"} |
| 79 | LDSHARED=${LDSHARED-"cc"} |
| 80 | RANLIB=${RANLIB-"true"} |
| 81 | AR="cc -A";; |
| 82 | SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} |
| 83 | CFLAGS=${CFLAGS-"-O3"} |
| 84 | LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; |
| 85 | SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."} |
| 86 | CFLAGS=${CFLAGS-"-fast -xcg89"} |
| 87 | LDSHARED=${LDSHARED-"cc -G"};; |
| 88 | SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} |
| 89 | CFLAGS=${CFLAGS-"-O2"} |
| 90 | LDSHARED=${LDSHARED-"ld"};; |
| 91 | UNIX_System_V\ 4.2.0) |
| 92 | SFLAGS=${CFLAGS-"-KPIC -O"} |
| 93 | CFLAGS=${CFLAGS-"-O"} |
| 94 | LDSHARED=${LDSHARED-"cc -G"};; |
| 95 | UNIX_SV\ 4.2MP) |
| 96 | SFLAGS=${CFLAGS-"-Kconform_pic -O"} |
| 97 | CFLAGS=${CFLAGS-"-O"} |
| 98 | LDSHARED=${LDSHARED-"cc -G"};; |
| 99 | # send working options for other systems to support@gzip.org |
| 100 | *) SFLAGS=${CFLAGS-"-O"} |
| 101 | CFLAGS=${CFLAGS-"-O"} |
| 102 | LDSHARED=${LDSHARED-"cc -shared"};; |
| 103 | esac |
| 104 | fi |
| 105 | |
| 106 | if test $shared -eq 1; then |
| 107 | echo Checking for shared library support... |
| 108 | # we must test in two steps (cc then ld), required at least on SunOS 4.x |
| 109 | if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" && |
| 110 | test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then |
| 111 | CFLAGS="$SFLAGS" |
| 112 | LIBS="$SHAREDLIB.$VER" |
| 113 | echo Building shared library $SHAREDLIB.$VER with $CC. |
| 114 | elif test -z "$old_cc" -a -z "$old_cflags"; then |
| 115 | echo No shared library suppport. |
| 116 | shared=0; |
| 117 | else |
| 118 | echo 'No shared library suppport; try without defining CC and CFLAGS' |
| 119 | shared=0; |
| 120 | fi |
| 121 | fi |
| 122 | if test $shared -eq 0; then |
| 123 | LDSHARED="$CC" |
| 124 | echo Building static library $LIBS version $VER with $CC. |
| 125 | fi |
| 126 | |
| 127 | if test -f /usr/include/unistd.h; then |
| 128 | CFLAGS="$CFLAGS -DHAVE_UNISTD_H" |
| 129 | fi |
| 130 | |
| 131 | if test ! -f /usr/include/errno.h; then |
| 132 | CFLAGS="$CFLAGS -DNO_ERRNO_H" |
| 133 | fi |
| 134 | |
| 135 | cat > $test.c <<EOF |
| 136 | #include <sys/types.h> |
| 137 | #include <sys/mman.h> |
| 138 | #include <sys/stat.h> |
| 139 | caddr_t hello() { |
| 140 | return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); |
| 141 | } |
| 142 | EOF |
| 143 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
| 144 | CFLAGS="$CFLAGS -DUSE_MMAP" |
| 145 | echo Checking for mmap support... Yes. |
| 146 | else |
| 147 | echo Checking for mmap support... No. |
| 148 | fi |
| 149 | |
| 150 | rm -f $test.[co] $test$shared_ext |
| 151 | |
| 152 | # udpate Makefile |
| 153 | sed < Makefile.in " |
| 154 | /^CC *=/s%=.*%=$CC% |
| 155 | /^CFLAGS *=/s%=.*%=$CFLAGS% |
| 156 | /^LDSHARED *=/s%=.*%=$LDSHARED% |
| 157 | /^LIBS *=/s%=.*%=$LIBS% |
| 158 | /^SHAREDLIB *=/s%=.*%=$SHAREDLIB% |
| 159 | /^AR *=/s%=.*%=$AR% |
| 160 | /^RANLIB *=/s%=.*%=$RANLIB% |
| 161 | /^VER *=/s%=.*%=$VER% |
| 162 | /^prefix *=/s%=.*%=$prefix% |
| 163 | " > Makefile |