src/zlib/configure

   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=${prefix-/usr/local}
  27 exec_prefix=${exec_prefix-'${prefix}'}
  28 libdir=${libdir-'${exec_prefix}/lib'}
  29 includedir=${includedir-'${prefix}/include'}
  30 shared_ext='.so'
  31 shared=0
  32 gcc=0
  33 old_cc="$CC"
  34 old_cflags="$CFLAGS"
  35
  36 while test $# -ge 1
  37 do
  38 case "$1" in
  39     -h* | --h*)
  40       echo 'usage:'
  41       echo '  configure [--shared] [--prefix=PREFIX]  [--exec_prefix=EXPREFIX]'
  42       echo '     [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
  43         exit 0;;
  44   -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
  45     -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
  46     -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
  47     -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
  48   -p* | --p*) prefix="$2"; shift; shift;;
  49     -e* | --e*) exec_prefix="$2"; shift; shift;;
  50     -l* | --l*) libdir="$2"; shift; shift;;
  51     -i* | --i*) includedir="$2"; shift; shift;;
  52   -s* | --s*) shared=1; shift;;
  53     esac
  54 done
  55
  56 test=ztest$$
  57 cat > $test.c <<EOF
  58 extern int getchar();
  59 int hello() {return getchar();}
  60 EOF
  61
  62 test -z "$CC" && echo Checking for gcc...
  63 cc=${CC-gcc}
  64 cflags=${CFLAGS-"-O3"}
  65 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
  66 case "$cc" in
  67   *gcc*) gcc=1;;
  68 esac
  69
  70 if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
  71   CC="$cc"
  72   SFLAGS=${CFLAGS-"-fPIC -O3"}
  73   CFLAGS="$cflags"
  74   case `(uname -s || echo unknown) 2>/dev/null` in
  75   Linux | linux) LDSHARED=${LDSHARED-"gcc -shared -Wl,-soname,libz.so.1"};;
  76   *)             LDSHARED=${LDSHARED-"gcc -shared"};;
  77   esac
  78 else
  79   # find system name and corresponding cc options
  80   CC=${CC-cc}
  81   case `(uname -sr || echo unknown) 2>/dev/null` in
  82   HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
  83              CFLAGS=${CFLAGS-"-O"}
  84 #            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
  85              LDSHARED=${LDSHARED-"ld -b"}
  86              shared_ext='.sl'
  87              SHAREDLIB='libz.sl';;
  88   IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
  89              CFLAGS=${CFLAGS-"-ansi -O2"}
  90              LDSHARED=${LDSHARED-"cc -shared"};;
  91   OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
  92              CFLAGS=${CFLAGS-"-O -std1"}
  93              LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,$SHAREDLIB -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
  94   OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
  95              CFLAGS=${CFLAGS-"-O -std1"}
  96              LDSHARED=${LDSHARED-"cc -shared"};;
  97   QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
  98              CFLAGS=${CFLAGS-"-4 -O"}
  99              LDSHARED=${LDSHARED-"cc"}
 100              RANLIB=${RANLIB-"true"}
 101              AR="cc -A";;
 102   SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
 103              CFLAGS=${CFLAGS-"-O3"}
 104              LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
 105   SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
 106              CFLAGS=${CFLAGS-"-fast -xcg89"}
 107              LDSHARED=${LDSHARED-"cc -G"};;
 108   SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
 109              CFLAGS=${CFLAGS-"-O2"}
 110              LDSHARED=${LDSHARED-"ld"};;
 111   UNIX_System_V\ 4.2.0)
 112              SFLAGS=${CFLAGS-"-KPIC -O"}
 113              CFLAGS=${CFLAGS-"-O"}
 114              LDSHARED=${LDSHARED-"cc -G"};;
 115   UNIX_SV\ 4.2MP)
 116              SFLAGS=${CFLAGS-"-Kconform_pic -O"}
 117              CFLAGS=${CFLAGS-"-O"}
 118              LDSHARED=${LDSHARED-"cc -G"};;
 119   # send working options for other systems to support@gzip.org
 120   *)         SFLAGS=${CFLAGS-"-O"}
 121              CFLAGS=${CFLAGS-"-O"}
 122              LDSHARED=${LDSHARED-"cc -shared"};;
 123   esac
 124 fi
 125
 126 if test $shared -eq 1; then
 127   echo Checking for shared library support...
 128   # we must test in two steps (cc then ld), required at least on SunOS 4.x
 129   if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
 130      test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
 131     CFLAGS="$SFLAGS"
 132     LIBS="$SHAREDLIB.$VER"
 133     echo Building shared library $SHAREDLIB.$VER with $CC.
 134   elif test -z "$old_cc" -a -z "$old_cflags"; then
 135     echo No shared library suppport.
 136     shared=0;
 137   else
 138     echo 'No shared library suppport; try without defining CC and CFLAGS'
 139     shared=0;
 140   fi
 141 fi
 142 if test $shared -eq 0; then
 143   LDSHARED="$CC"
 144   echo Building static library $LIBS version $VER with $CC.
 145 fi
 146
 147 cat > $test.c <<EOF
 148 #include <unistd.h>
 149 int main() { return 0; }
 150 EOF
 151 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
 152   CFLAGS="$CFLAGS -DHAVE_UNISTD_H"
 153   echo "Checking for unistd.h... Yes."
 154 else
 155   echo "Checking for unistd.h... No."
 156 fi
 157
 158 cat > $test.c <<EOF
 159 #include <errno.h>
 160 int main() { return 0; }
 161 EOF
 162 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
 163   echo "Checking for errno.h...  Yes."
 164 else
 165   echo "Checking for errno.h...  No."
 166   CFLAGS="$CFLAGS -DNO_ERRNO_H"
 167 fi
 168
 169 cat > $test.c <<EOF
 170 #include <sys/types.h>
 171 #include <sys/mman.h>
 172 #include <sys/stat.h>
 173 caddr_t hello() {
 174   return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
 175 }
 176 EOF
 177 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
 178   CFLAGS="$CFLAGS -DUSE_MMAP"
 179   echo Checking for mmap support... Yes.
 180 else
 181   echo Checking for mmap support... No.
 182 fi
 183
 184 CPP=${CPP-"$CC -E"}
 185 case $CFLAGS in
 186   *ASMV*)
 187     if test "`nm $test.o | grep _hello`" = ""; then
 188       CPP="$CPP -DNO_UNDERLINE"
 189       echo Checking for underline in external names... No.
 190     else
 191       echo Checking for underline in external names... Yes.
 192     fi;;
 193 esac
 194
 195 rm -f $test.[co] $test$shared_ext
 196
 197 # udpate Makefile
 198 sed < Makefile.in "
 199 /^CC *=/s%=.*%=$CC%
 200 /^CFLAGS *=/s%=.*%=$CFLAGS%
 201 /^CPP *=/s%=.*%=$CPP%
 202 /^LDSHARED *=/s%=.*%=$LDSHARED%
 203 /^LIBS *=/s%=.*%=$LIBS%
 204 /^SHAREDLIB *=/s%=.*%=$SHAREDLIB%
 205 /^AR *=/s%=.*%=$AR%
 206 /^RANLIB *=/s%=.*%=$RANLIB%
 207 /^VER *=/s%=.*%=$VER%
 208 /^prefix *=/s%=.*%=$prefix%
 209 /^exec_prefix *=/s%=.*%=$exec_prefix%
 210 /^libdir *=/s%=.*%=$libdir%
 211 /^includedir *=/s%=.*%=$includedir%
 212 " > Makefile