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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [services/] [compress/] [zlib/] [current/] [src/] [configure] - Blame information for rev 840

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#!/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=${AR-"ar rc"}
RANLIB=${RANLIB-"ranlib"}
prefix=${prefix-/usr/local}
exec_prefix=${exec_prefix-'${prefix}'}
libdir=${libdir-'${exec_prefix}/lib'}
includedir=${includedir-'${prefix}/include'}
mandir=${mandir-'${prefix}/share/man'}
shared_ext='.so'
shared=0
gcc=0
old_cc="$CC"
old_cflags="$CFLAGS"
 
while test $# -ge 1
do
case "$1" in
    -h* | --h*)
      echo 'usage:'
      echo '  configure [--shared] [--prefix=PREFIX]  [--exec_prefix=EXPREFIX]'
      echo '     [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
        exit 0;;
    -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
    -e*=* | --e*=*) 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* | --p*) prefix="$2"; shift; shift;;
    -e* | --e*) exec_prefix="$2"; shift; shift;;
    -l* | --l*) libdir="$2"; shift; shift;;
    -i* | --i*) includedir="$2"; shift; shift;;
    -s* | --s*) shared=1; shift;;
    *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
    esac
done
 
test=ztest$$
cat > $test.c <
extern int getchar();
int hello() {return getchar();}
EOF
 
test -z "$CC" && echo Checking for gcc...
cc=${CC-gcc}
cflags=${CFLAGS-"-O3"}
# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
case "$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 | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
  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=${LDSHARED-"cc -shared"};;
  OSF1\ V4*) SFLAGS=${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=${LDSHARED-"cc -shared"};;
  QNX*)      SFLAGS=${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"};;
  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 '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 > $test.c <
#include 
int main() { return 0; }
EOF
if test "`($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
 
cat > $test.c <
#include 
#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 
#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 
#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 
#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 <
#include 
 
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 <
#include 
 
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 <
#include 
 
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 >$test.c <
#include 
int main() { return 0; }
EOF
if test "`($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 > $test.c <
#include 
#include 
#include 
caddr_t hello() {
  return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
}
EOF
if test "`($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#=.*#=$AR#
/^RANLIB *=/s#=.*#=$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

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Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [services/] [compress/] [zlib/] [current/] [src/] [configure] - Blame information for rev 840

Line No.	Rev	Author	Line
1	786	skrzyp	`#!/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			`LDFLAGS="-L. ${LIBS}"`
23			VER=`sed -n -e '/VERSION "/s/."\(.\)".*/\1/p' < zlib.h`
24			VER2=`sed -n -e '/VERSION "/s/."\([0-9]\\.[0-9]\)\\../\1/p' < zlib.h`
25			VER1=`sed -n -e '/VERSION "/s/."\([0-9]\)\\..*/\1/p' < zlib.h`
26			`AR=${AR-"ar rc"}`
27			`RANLIB=${RANLIB-"ranlib"}`
28			`prefix=${prefix-/usr/local}`
29			`exec_prefix=${exec_prefix-'${prefix}'}`
30			`libdir=${libdir-'${exec_prefix}/lib'}`
31			`includedir=${includedir-'${prefix}/include'}`
32			`mandir=${mandir-'${prefix}/share/man'}`
33			`shared_ext='.so'`
34			`shared=0`
35			`gcc=0`
36			`old_cc="$CC"`
37			`old_cflags="$CFLAGS"`
38
39			`while test $# -ge 1`
40			`do`
41			`case "$1" in`
42			`-h* \| --h*)`
43			`echo 'usage:'`
44			`echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]'`
45			`echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'`
46			`exit 0;;`
47			-p= \| --p=) prefix=`echo $1 \| sed 's/[-a-z_]*=//'`; shift;;
48			-e= \| --e=) exec_prefix=`echo $1 \| sed 's/[-a-z_]*=//'`; shift;;
49			-l= \| --libdir=) libdir=`echo $1 \| sed 's/[-a-z_]=//'`; shift;;
50			-i= \| --includedir=) includedir=`echo $1 \| sed 's/[-a-z_]=//'`;shift;;
51			`-p* \| --p*) prefix="$2"; shift; shift;;`
52			`-e* \| --e*) exec_prefix="$2"; shift; shift;;`
53			`-l* \| --l*) libdir="$2"; shift; shift;;`
54			`-i* \| --i*) includedir="$2"; shift; shift;;`
55			`-s* \| --s*) shared=1; shift;;`
56			`*) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;`
57			`esac`
58			`done`
59
60			`test=ztest$$`
61			`cat > $test.c <`
62			`extern int getchar();`
63			`int hello() {return getchar();}`
64			`EOF`
65
66			`test -z "$CC" && echo Checking for gcc...`
67			`cc=${CC-gcc}`
68			`cflags=${CFLAGS-"-O3"}`
69			`# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure`
70			`case "$cc" in`
71			`gcc) gcc=1;;`
72			`esac`
73
74			`if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then`
75			`CC="$cc"`
76			`SFLAGS=${CFLAGS-"-fPIC -O3"}`
77			`CFLAGS="$cflags"`
78			case `(uname -s \|\| echo unknown) 2>/dev/null` in
79			`Linux \| linux \| GNU \| GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;`
80			`CYGWIN* \| Cygwin* \| cygwin* \| OS/2* )`
81			`EXE='.exe';;`
82			`QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4`
83			`# (alain.bonnefoy@icbt.com)`
84			`LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;`
85			`HP-UX*)`
86			`LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}`
87			case `(uname -m \|\| echo unknown) 2>/dev/null` in
88			`ia64)`
89			`shared_ext='.so'`
90			`SHAREDLIB='libz.so';;`
91			`*)`
92			`shared_ext='.sl'`
93			`SHAREDLIB='libz.sl';;`
94			`esac;;`
95			`Darwin*) shared_ext='.dylib'`
96			`SHAREDLIB=libz$shared_ext`
97			`SHAREDLIBV=libz.$VER$shared_ext`
98			`SHAREDLIBM=libz.$VER1$shared_ext`
99			`LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};;`
100			`*) LDSHARED=${LDSHARED-"$cc -shared"};;`
101			`esac`
102			`else`
103			`# find system name and corresponding cc options`
104			`CC=${CC-cc}`
105			case `(uname -sr \|\| echo unknown) 2>/dev/null` in
106			`HP-UX*) SFLAGS=${CFLAGS-"-O +z"}`
107			`CFLAGS=${CFLAGS-"-O"}`
108			`# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}`
109			`LDSHARED=${LDSHARED-"ld -b"}`
110			case `(uname -m \|\| echo unknown) 2>/dev/null` in
111			`ia64)`
112			`shared_ext='.so'`
113			`SHAREDLIB='libz.so';;`
114			`*)`
115			`shared_ext='.sl'`
116			`SHAREDLIB='libz.sl';;`
117			`esac;;`
118			`IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}`
119			`CFLAGS=${CFLAGS-"-ansi -O2"}`
120			`LDSHARED=${LDSHARED-"cc -shared"};;`
121			`OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}`
122			`CFLAGS=${CFLAGS-"-O -std1"}`
123			`LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;`
124			`OSF1*) SFLAGS=${CFLAGS-"-O -std1"}`
125			`CFLAGS=${CFLAGS-"-O -std1"}`
126			`LDSHARED=${LDSHARED-"cc -shared"};;`
127			`QNX*) SFLAGS=${CFLAGS-"-4 -O"}`
128			`CFLAGS=${CFLAGS-"-4 -O"}`
129			`LDSHARED=${LDSHARED-"cc"}`
130			`RANLIB=${RANLIB-"true"}`
131			`AR="cc -A";;`
132			`SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}`
133			`CFLAGS=${CFLAGS-"-O3"}`
134			`LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;`
135			`SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}`
136			`CFLAGS=${CFLAGS-"-fast -xcg89"}`
137			`LDSHARED=${LDSHARED-"cc -G"};;`
138			`SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}`
139			`CFLAGS=${CFLAGS-"-O2"}`
140			`LDSHARED=${LDSHARED-"ld"};;`
141			`SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}`
142			`CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"}`
143			`LDSHARED=${LDSHARED-"cc -xarch=v9b"};;`
144			`UNIX_System_V\ 4.2.0)`
145			`SFLAGS=${CFLAGS-"-KPIC -O"}`
146			`CFLAGS=${CFLAGS-"-O"}`
147			`LDSHARED=${LDSHARED-"cc -G"};;`
148			`UNIX_SV\ 4.2MP)`
149			`SFLAGS=${CFLAGS-"-Kconform_pic -O"}`
150			`CFLAGS=${CFLAGS-"-O"}`
151			`LDSHARED=${LDSHARED-"cc -G"};;`
152			`OpenUNIX\ 5)`
153			`SFLAGS=${CFLAGS-"-KPIC -O"}`
154			`CFLAGS=${CFLAGS-"-O"}`
155			`LDSHARED=${LDSHARED-"cc -G"};;`
156			`AIX*) # Courtesy of dbakker@arrayasolutions.com`
157			`SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}`
158			`CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}`
159			`LDSHARED=${LDSHARED-"xlc -G"};;`
160			`# send working options for other systems to support@gzip.org`
161			`*) SFLAGS=${CFLAGS-"-O"}`
162			`CFLAGS=${CFLAGS-"-O"}`
163			`LDSHARED=${LDSHARED-"cc -shared"};;`
164			`esac`
165			`fi`
166
167			`SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}`
168			`SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}`
169			`SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}`
170
171			`if test $shared -eq 1; then`
172			`echo Checking for shared library support...`
173			`# we must test in two steps (cc then ld), required at least on SunOS 4.x`
174			if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
175			test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
176			`CFLAGS="$SFLAGS"`
177			`LIBS="$SHAREDLIBV"`
178			`echo Building shared library $SHAREDLIBV with $CC.`
179			`elif test -z "$old_cc" -a -z "$old_cflags"; then`
180			`echo No shared library support.`
181			`shared=0;`
182			`else`
183			`echo 'No shared library support; try without defining CC and CFLAGS'`
184			`shared=0;`
185			`fi`
186			`fi`
187			`if test $shared -eq 0; then`
188			`LDSHARED="$CC"`
189			`echo Building static library $LIBS version $VER with $CC.`
190			`else`
191			`LDFLAGS="-L. ${SHAREDLIBV}"`
192			`fi`
193
194			`cat > $test.c <`
195			`#include`
196			`int main() { return 0; }`
197			`EOF`
198			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
199			`sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h`
200			`echo "Checking for unistd.h... Yes."`
201			`else`
202			`cp -p zconf.in.h zconf.h`
203			`echo "Checking for unistd.h... No."`
204			`fi`
205
206			`cat > $test.c <`
207			`#include`
208			`#include`
209			`#include "zconf.h"`
210
211			`int main()`
212			`{`
213			`#ifndef STDC`
214			`choke me`
215			`#endif`
216
217			`return 0;`
218			`}`
219			`EOF`
220
221			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
222			`echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()"`
223
224			`cat > $test.c <`
225			`#include`
226			`#include`
227
228			`int mytest(char *fmt, ...)`
229			`{`
230			`char buf[20];`
231			`va_list ap;`
232
233			`va_start(ap, fmt);`
234			`vsnprintf(buf, sizeof(buf), fmt, ap);`
235			`va_end(ap);`
236			`return 0;`
237			`}`
238
239			`int main()`
240			`{`
241			`return (mytest("Hello%d\n", 1));`
242			`}`
243			`EOF`
244
245			if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
246			`echo "Checking for vsnprintf() in stdio.h... Yes."`
247
248			`cat >$test.c <`
249			`#include`
250			`#include`
251
252			`int mytest(char *fmt, ...)`
253			`{`
254			`int n;`
255			`char buf[20];`
256			`va_list ap;`
257
258			`va_start(ap, fmt);`
259			`n = vsnprintf(buf, sizeof(buf), fmt, ap);`
260			`va_end(ap);`
261			`return n;`
262			`}`
263
264			`int main()`
265			`{`
266			`return (mytest("Hello%d\n", 1));`
267			`}`
268			`EOF`
269
270			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
271			`echo "Checking for return value of vsnprintf()... Yes."`
272			`else`
273			`CFLAGS="$CFLAGS -DHAS_vsnprintf_void"`
274			`echo "Checking for return value of vsnprintf()... No."`
275			`echo " WARNING: apparently vsnprintf() does not return a value. zlib"`
276			`echo " can build but will be open to possible string-format security"`
277			`echo " vulnerabilities."`
278			`fi`
279			`else`
280			`CFLAGS="$CFLAGS -DNO_vsnprintf"`
281			`echo "Checking for vsnprintf() in stdio.h... No."`
282			`echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"`
283			`echo " can build but will be open to possible buffer-overflow security"`
284			`echo " vulnerabilities."`
285
286			`cat >$test.c <`
287			`#include`
288			`#include`
289
290			`int mytest(char *fmt, ...)`
291			`{`
292			`int n;`
293			`char buf[20];`
294			`va_list ap;`
295
296			`va_start(ap, fmt);`
297			`n = vsprintf(buf, fmt, ap);`
298			`va_end(ap);`
299			`return n;`
300			`}`
301
302			`int main()`
303			`{`
304			`return (mytest("Hello%d\n", 1));`
305			`}`
306			`EOF`
307
308			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
309			`echo "Checking for return value of vsprintf()... Yes."`
310			`else`
311			`CFLAGS="$CFLAGS -DHAS_vsprintf_void"`
312			`echo "Checking for return value of vsprintf()... No."`
313			`echo " WARNING: apparently vsprintf() does not return a value. zlib"`
314			`echo " can build but will be open to possible string-format security"`
315			`echo " vulnerabilities."`
316			`fi`
317			`fi`
318			`else`
319			`echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()"`
320
321			`cat >$test.c <`
322			`#include`
323
324			`int mytest()`
325			`{`
326			`char buf[20];`
327
328			`snprintf(buf, sizeof(buf), "%s", "foo");`
329			`return 0;`
330			`}`
331
332			`int main()`
333			`{`
334			`return (mytest());`
335			`}`
336			`EOF`
337
338			if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
339			`echo "Checking for snprintf() in stdio.h... Yes."`
340
341			`cat >$test.c <`
342			`#include`
343
344			`int mytest()`
345			`{`
346			`char buf[20];`
347
348			`return snprintf(buf, sizeof(buf), "%s", "foo");`
349			`}`
350
351			`int main()`
352			`{`
353			`return (mytest());`
354			`}`
355			`EOF`
356
357			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
358			`echo "Checking for return value of snprintf()... Yes."`
359			`else`
360			`CFLAGS="$CFLAGS -DHAS_snprintf_void"`
361			`echo "Checking for return value of snprintf()... No."`
362			`echo " WARNING: apparently snprintf() does not return a value. zlib"`
363			`echo " can build but will be open to possible string-format security"`
364			`echo " vulnerabilities."`
365			`fi`
366			`else`
367			`CFLAGS="$CFLAGS -DNO_snprintf"`
368			`echo "Checking for snprintf() in stdio.h... No."`
369			`echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"`
370			`echo " can build but will be open to possible buffer-overflow security"`
371			`echo " vulnerabilities."`
372
373			`cat >$test.c <`
374			`#include`
375
376			`int mytest()`
377			`{`
378			`char buf[20];`
379
380			`return sprintf(buf, "%s", "foo");`
381			`}`
382
383			`int main()`
384			`{`
385			`return (mytest());`
386			`}`
387			`EOF`
388
389			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
390			`echo "Checking for return value of sprintf()... Yes."`
391			`else`
392			`CFLAGS="$CFLAGS -DHAS_sprintf_void"`
393			`echo "Checking for return value of sprintf()... No."`
394			`echo " WARNING: apparently sprintf() does not return a value. zlib"`
395			`echo " can build but will be open to possible string-format security"`
396			`echo " vulnerabilities."`
397			`fi`
398			`fi`
399			`fi`
400
401			`cat >$test.c <`
402			`#include`
403			`int main() { return 0; }`
404			`EOF`
405			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
406			`echo "Checking for errno.h... Yes."`
407			`else`
408			`echo "Checking for errno.h... No."`
409			`CFLAGS="$CFLAGS -DNO_ERRNO_H"`
410			`fi`
411
412			`cat > $test.c <`
413			`#include`
414			`#include`
415			`#include`
416			`caddr_t hello() {`
417			`return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);`
418			`}`
419			`EOF`
420			if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
421			`CFLAGS="$CFLAGS -DUSE_MMAP"`
422			`echo Checking for mmap support... Yes.`
423			`else`
424			`echo Checking for mmap support... No.`
425			`fi`
426
427			`CPP=${CPP-"$CC -E"}`
428			`case $CFLAGS in`
429			`ASMV)`
430			if test "`nm $test.o \| grep _hello`" = ""; then
431			`CPP="$CPP -DNO_UNDERLINE"`
432			`echo Checking for underline in external names... No.`
433			`else`
434			`echo Checking for underline in external names... Yes.`
435			`fi;;`
436			`esac`
437
438			`rm -f $test.[co] $test $test$shared_ext`
439
440			`# udpate Makefile`
441			`sed < Makefile.in "`
442			`/^CC =/s#=.#=$CC#`
443			`/^CFLAGS =/s#=.#=$CFLAGS#`
444			`/^CPP =/s#=.#=$CPP#`
445			`/^LDSHARED =/s#=.#=$LDSHARED#`
446			`/^LIBS =/s#=.#=$LIBS#`
447			`/^SHAREDLIB =/s#=.#=$SHAREDLIB#`
448			`/^SHAREDLIBV =/s#=.#=$SHAREDLIBV#`
449			`/^SHAREDLIBM =/s#=.#=$SHAREDLIBM#`
450			`/^AR =/s#=.#=$AR#`
451			`/^RANLIB =/s#=.#=$RANLIB#`
452			`/^EXE =/s#=.#=$EXE#`
453			`/^prefix =/s#=.#=$prefix#`
454			`/^exec_prefix =/s#=.#=$exec_prefix#`
455			`/^libdir =/s#=.#=$libdir#`
456			`/^includedir =/s#=.#=$includedir#`
457			`/^mandir =/s#=.#=$mandir#`
458			`/^LDFLAGS =/s#=.#=$LDFLAGS#`
459			`" > Makefile`