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"
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
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
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
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`
28 RANLIB=${RANLIB-"ranlib"}
29 prefix=${prefix-/usr/local}
30 exec_prefix=${exec_prefix-'${prefix}'}
31 libdir=${libdir-'${exec_prefix}/lib'}
32 includedir=${includedir-'${prefix}/include'}
33 mandir=${mandir-'${prefix}/share/man'}
46 echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]'
47 echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR] [--zprefix]'
49 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
50 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
51 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
52 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
53 -p* | --prefix) prefix="$2"; shift; shift;;
54 -e* | --eprefix) exec_prefix="$2"; shift; shift;;
55 -l* | --libdir) libdir="$2"; shift; shift;;
56 -i* | --includedir) includedir="$2"; shift; shift;;
57 -s* | --shared | --enable-shared) shared=1; shift;;
58 -z* | --zprefix) zprefix=1; shift;;
59 --sysconfdir=*) echo "ignored option: --sysconfdir"; shift;;
60 --localstatedir=*) echo "ignored option: --localstatedir"; shift;;
61 *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
68 int hello() {return getchar();}
71 test -z "$CC" && echo Checking for gcc...
73 cflags=${CFLAGS-"-O3"}
74 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
79 if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
81 SFLAGS="${CFLAGS-"-O3"} -fPIC"
82 CFLAGS="${CFLAGS-"-O3"}"
83 case `(uname -s || echo unknown) 2>/dev/null` in
84 Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"};;
85 CYGWIN* | Cygwin* | cygwin* | OS/2* )
87 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
88 # (alain.bonnefoy@icbt.com)
89 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;
91 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
92 case `(uname -m || echo unknown) 2>/dev/null` in
100 Darwin*) shared_ext='.dylib'
101 SHAREDLIB=libz$shared_ext
102 SHAREDLIBV=libz.$VER$shared_ext
103 SHAREDLIBM=libz.$VER1$shared_ext
104 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};;
105 *) LDSHARED=${LDSHARED-"$cc -shared"};;
108 # find system name and corresponding cc options
110 case `(uname -sr || echo unknown) 2>/dev/null` in
111 HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
112 CFLAGS=${CFLAGS-"-O"}
113 # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
114 LDSHARED=${LDSHARED-"ld -b"}
115 case `(uname -m || echo unknown) 2>/dev/null` in
118 SHAREDLIB='libz.so';;
121 SHAREDLIB='libz.sl';;
123 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
124 CFLAGS=${CFLAGS-"-ansi -O2"}
125 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"};;
126 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
127 CFLAGS=${CFLAGS-"-O -std1"}
128 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
129 OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
130 CFLAGS=${CFLAGS-"-O -std1"}
131 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"};;
132 QNX*) SFLAGS=${CFLAGS-"-4 -O"}
133 CFLAGS=${CFLAGS-"-4 -O"}
134 LDSHARED=${LDSHARED-"cc"}
135 RANLIB=${RANLIB-"true"}
137 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
138 CFLAGS=${CFLAGS-"-O3"}
139 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
140 SunOS\ 5*) LDSHARED=${LDSHARED-"cc -G"}
141 case `(uname -m || echo unknown) 2>/dev/null` in
143 SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
144 CFLAGS=${CFLAGS-"-xpentium -fast"};;
146 SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
147 CFLAGS=${CFLAGS-"-fast -xcg92"};;
149 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
150 CFLAGS=${CFLAGS-"-O2"}
151 LDSHARED=${LDSHARED-"ld"};;
152 SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
153 CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"}
154 LDSHARED=${LDSHARED-"cc -xarch=v9b"};;
155 UNIX_System_V\ 4.2.0)
156 SFLAGS=${CFLAGS-"-KPIC -O"}
157 CFLAGS=${CFLAGS-"-O"}
158 LDSHARED=${LDSHARED-"cc -G"};;
160 SFLAGS=${CFLAGS-"-Kconform_pic -O"}
161 CFLAGS=${CFLAGS-"-O"}
162 LDSHARED=${LDSHARED-"cc -G"};;
164 SFLAGS=${CFLAGS-"-KPIC -O"}
165 CFLAGS=${CFLAGS-"-O"}
166 LDSHARED=${LDSHARED-"cc -G"};;
167 AIX*) # Courtesy of dbakker@arrayasolutions.com
168 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
169 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
170 LDSHARED=${LDSHARED-"xlc -G"};;
171 # send working options for other systems to support@gzip.org
172 *) SFLAGS=${CFLAGS-"-O"}
173 CFLAGS=${CFLAGS-"-O"}
174 LDSHARED=${LDSHARED-"cc -shared"};;
178 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
179 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
180 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
182 if test $shared -eq 1; then
183 echo Checking for shared library support...
184 # we must test in two steps (cc then ld), required at least on SunOS 4.x
185 if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
186 test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
187 LIBS="$LIBS $SHAREDLIBV"
188 echo Building shared library $SHAREDLIBV with $CC.
189 elif test -z "$old_cc" -a -z "$old_cflags"; then
190 echo No shared library support.
193 echo Tested $CC -c $SFLAGS $test.c
194 $CC -c $SFLAGS $test.c
195 echo Tested $LDSHARED -o $test$shared_ext $test.o
196 $LDSHARED -o $test$shared_ext $test.o
197 echo 'No shared library support; try without defining CC and CFLAGS'
201 if test $shared -eq 0; then
203 echo Building static library $LIBS version $VER with $CC.
206 cat > zlibdefs.h << EOF
207 /* zlibdefs.h -- compile-time definitions for the zlib compression library
208 * Copyright (C) 1995-2006 Jean-loup Gailly.
209 * For conditions of distribution and use, see copyright notice in zlib.h
215 #include <sys/types.h>
218 if test "`($CC -c $CFLAGS -D_LARGEFILE64_SOURCE $test.c) 2>&1`" = ""; then
219 cat >> zlibdefs.h <<EOF
220 #define z_off_t off64_t
222 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE"
223 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE"
224 echo "Checking for off64_t... Yes."
226 echo "Checking for off64_t... No."
231 int main() { return 0; }
233 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
234 cat >> zlibdefs.h <<EOF
235 #include <sys/types.h> /* for off_t */
236 #include <unistd.h> /* for SEEK_* and off_t */
238 # include <unixio.h> /* for off_t */
241 # define z_off_t off_t
244 echo "Checking for unistd.h... Yes."
246 echo "Checking for unistd.h... No."
249 if test $zprefix -eq 1; then
250 sed < zconf.h "/#ifdef Z_PREFIX/s/def Z_PREFIX/ 1/" > zconf.temp.h
251 mv zconf.temp.h zconf.h
252 echo "Using z_ prefix on all symbols."
270 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
271 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()."
277 int mytest(char *fmt, ...)
283 vsnprintf(buf, sizeof(buf), fmt, ap);
290 return (mytest("Hello%d\n", 1));
294 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
295 echo "Checking for vsnprintf() in stdio.h... Yes."
301 int mytest(char *fmt, ...)
308 n = vsnprintf(buf, sizeof(buf), fmt, ap);
315 return (mytest("Hello%d\n", 1));
319 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
320 echo "Checking for return value of vsnprintf()... Yes."
322 CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
323 echo "Checking for return value of vsnprintf()... No."
324 echo " WARNING: apparently vsnprintf() does not return a value. zlib"
325 echo " can build but will be open to possible string-format security"
326 echo " vulnerabilities."
329 CFLAGS="$CFLAGS -DNO_vsnprintf"
330 echo "Checking for vsnprintf() in stdio.h... No."
331 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
332 echo " can build but will be open to possible buffer-overflow security"
333 echo " vulnerabilities."
339 int mytest(char *fmt, ...)
346 n = vsprintf(buf, fmt, ap);
353 return (mytest("Hello%d\n", 1));
357 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
358 echo "Checking for return value of vsprintf()... Yes."
360 CFLAGS="$CFLAGS -DHAS_vsprintf_void"
361 echo "Checking for return value of vsprintf()... No."
362 echo " WARNING: apparently vsprintf() does not return a value. zlib"
363 echo " can build but will be open to possible string-format security"
364 echo " vulnerabilities."
368 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()."
377 snprintf(buf, sizeof(buf), "%s", "foo");
387 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
388 echo "Checking for snprintf() in stdio.h... Yes."
397 return snprintf(buf, sizeof(buf), "%s", "foo");
406 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
407 echo "Checking for return value of snprintf()... Yes."
409 CFLAGS="$CFLAGS -DHAS_snprintf_void"
410 echo "Checking for return value of snprintf()... No."
411 echo " WARNING: apparently snprintf() does not return a value. zlib"
412 echo " can build but will be open to possible string-format security"
413 echo " vulnerabilities."
416 CFLAGS="$CFLAGS -DNO_snprintf"
417 echo "Checking for snprintf() in stdio.h... No."
418 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"
419 echo " can build but will be open to possible buffer-overflow security"
420 echo " vulnerabilities."
429 return sprintf(buf, "%s", "foo");
438 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
439 echo "Checking for return value of sprintf()... Yes."
441 CFLAGS="$CFLAGS -DHAS_sprintf_void"
442 echo "Checking for return value of sprintf()... No."
443 echo " WARNING: apparently sprintf() does not return a value. zlib"
444 echo " can build but will be open to possible string-format security"
445 echo " vulnerabilities."
452 int main() { return 0; }
454 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
455 echo "Checking for errno.h... Yes."
457 echo "Checking for errno.h... No."
458 CFLAGS="$CFLAGS -DNO_ERRNO_H"
462 #include <sys/types.h>
463 #include <sys/mman.h>
464 #include <sys/stat.h>
466 return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
469 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
470 CFLAGS="$CFLAGS -DUSE_MMAP"
471 echo Checking for mmap support... Yes.
473 echo Checking for mmap support... No.
479 if test "`nm $test.o | grep _hello`" = ""; then
480 CPP="$CPP -DNO_UNDERLINE"
481 echo Checking for underline in external names... No.
483 echo Checking for underline in external names... Yes.
487 rm -f $test.[co] $test $test$shared_ext
492 /^CFLAGS *=/s#=.*#=$CFLAGS#
493 /^SFLAGS *=/s#=.*#=$SFLAGS#
494 /^CPP *=/s#=.*#=$CPP#
495 /^LDSHARED *=/s#=.*#=$LDSHARED#
496 /^LIBS *=/s#=.*#=$LIBS#
497 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
498 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
499 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
500 /^AR *=/s#=.*#=$AR_RC#
501 /^RANLIB *=/s#=.*#=$RANLIB#
502 /^EXE *=/s#=.*#=$EXE#
503 /^prefix *=/s#=.*#=$prefix#
504 /^exec_prefix *=/s#=.*#=$exec_prefix#
505 /^libdir *=/s#=.*#=$libdir#
506 /^includedir *=/s#=.*#=$includedir#
507 /^mandir *=/s#=.*#=$mandir#
508 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
513 /^CFLAGS *=/s#=.*#=$CFLAGS#
514 /^CPP *=/s#=.*#=$CPP#
515 /^LDSHARED *=/s#=.*#=$LDSHARED#
516 /^LIBS *=/s#=.*#=$LIBS#
517 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
518 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
519 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
520 /^AR *=/s#=.*#=$AR_RC#
521 /^RANLIB *=/s#=.*#=$RANLIB#
522 /^EXE *=/s#=.*#=$EXE#
523 /^prefix *=/s#=.*#=$prefix#
524 /^exec_prefix *=/s#=.*#=$exec_prefix#
525 /^libdir *=/s#=.*#=$libdir#
526 /^includedir *=/s#=.*#=$includedir#
527 /^mandir *=/s#=.*#=$mandir#
528 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
530 s/\@VERSION\@/$VER/g;