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 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 > $test.c <<EOF
  62 extern int getchar();
  63 int hello() {return getchar();}
  64 EOF
  65
  66 test -z "$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 > $test.c <<EOF
 195 #include <unistd.h>
 196 int main() { return 0; }
 197 EOF
 198 if test "`($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 > $test.c <<EOF
 207 #include <stdio.h>
 208 #include <stdarg.h>
 209 #include "zconf.h"
 210
 211 int main()
 212 {
 213 #ifndef STDC
 214   choke me
 215 #endif
 216
 217   return 0;
 218 }
 219 EOF
 220
 221 if test "`($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 > $test.c <<EOF
 225 #include <stdio.h>
 226 #include <stdarg.h>
 227
 228 int mytest(char *fmt, ...)
 229 {
 230   char buf[20];
 231   va_list ap;
 232
 233   va_start(ap, fmt);
 234   vsnprintf(buf, sizeof(buf), fmt, ap);
 235   va_end(ap);
 236   return 0;
 237 }
 238
 239 int main()
 240 {
 241   return (mytest("Hello%d\n", 1));
 242 }
 243 EOF
 244
 245   if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
 246     echo "Checking for vsnprintf() in stdio.h... Yes."
 247
 248     cat >$test.c <<EOF
 249 #include <stdio.h>
 250 #include <stdarg.h>
 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 <<EOF
 287 #include <stdio.h>
 288 #include <stdarg.h>
 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 >$test.c <<EOF
 322 #include <stdio.h>
 323
 324 int mytest()
 325 {
 326   char buf[20];
 327
 328   snprintf(buf, sizeof(buf), "%s", "foo");
 329   return 0;
 330 }
 331
 332 int main()
 333 {
 334   return (mytest());
 335 }
 336 EOF
 337
 338   if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
 339     echo "Checking for snprintf() in stdio.h... Yes."
 340
 341     cat >$test.c <<EOF
 342 #include <stdio.h>
 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 <<EOF
 374 #include <stdio.h>
 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 >$test.c <<EOF
 402 #include <errno.h>
 403 int main() { return 0; }
 404 EOF
 405 if test "`($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 > $test.c <<EOF
 413 #include <sys/types.h>
 414 #include <sys/mman.h>
 415 #include <sys/stat.h>
 416 caddr_t hello() {
 417   return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
 418 }
 419 EOF
 420 if test "`($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