2 # configure script for zlib.
4 # Normally configure builds both a static and a shared library.
5 # If you want to build just a static library, use: ./configure --static
7 # To impose specific compiler or flags or install directory, use for example:
8 # prefix=$HOME CC=cc CFLAGS="-O4" ./configure
9 # or for csh/tcsh users:
10 # (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
12 # Incorrect settings of CC or CFLAGS may prevent creating a shared library.
13 # If you have problems, try without defining CC and CFLAGS before reporting
17 LDFLAGS="${LDFLAGS} -L. ${STATICLIB}"
18 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
19 VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
20 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
21 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
24 RANLIB=${RANLIB-"ranlib"}
25 prefix=${prefix-/usr/local}
26 exec_prefix=${exec_prefix-'${prefix}'}
27 libdir=${libdir-'${exec_prefix}/lib'}
28 includedir=${includedir-'${prefix}/include'}
29 mandir=${mandir-'${prefix}/share/man'}
42 echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]'
43 echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR] [--zprefix]'
45 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift ;;
46 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift ;;
47 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift ;;
48 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift ;;
49 -u*=* | --uname=*) uname=`echo $1 | sed 's/[-a-z_]*=//'`;shift ;;
50 -p* | --prefix) prefix="$2"; shift; shift ;;
51 -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
52 -l* | --libdir) libdir="$2"; shift; shift ;;
53 -i* | --includedir) includedir="$2"; shift; shift ;;
54 -s* | --shared | --enable-shared) shared=1; shift ;;
55 -t | --static) shared=0; shift ;;
56 -z* | --zprefix) zprefix=1; shift ;;
57 --sysconfdir=*) echo "ignored option: --sysconfdir"; shift ;;
58 --localstatedir=*) echo "ignored option: --localstatedir"; shift ;;
59 *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1 ;;
66 int hello() {return getchar();}
69 test -z "$CC" && echo Checking for gcc...
71 cflags=${CFLAGS-"-O3"}
72 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
77 if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
79 SFLAGS="${CFLAGS-"-O3"} -fPIC"
80 CFLAGS="${CFLAGS-"-O3"}"
81 if test "${ZLIBGCCWARN}" = "YES"; then
82 CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
84 if test -z "$uname"; then
85 uname=`(uname -s || echo unknown) 2>/dev/null`
88 Linux | linux | GNU | GNU/* | *BSD | DragonFly) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
89 CYGWIN* | Cygwin* | cygwin* | OS/2* )
91 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
92 # (alain.bonnefoy@icbt.com)
93 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
95 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
96 case `(uname -m || echo unknown) 2>/dev/null` in
99 SHAREDLIB='libz.so' ;;
102 SHAREDLIB='libz.sl' ;;
104 Darwin*) shared_ext='.dylib'
105 SHAREDLIB=libz$shared_ext
106 SHAREDLIBV=libz.$VER$shared_ext
107 SHAREDLIBM=libz.$VER1$shared_ext
108 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} ;;
109 *) LDSHARED=${LDSHARED-"$cc -shared"} ;;
112 # find system name and corresponding cc options
114 if test -z "$uname"; then
115 uname=`(uname -sr || echo unknown) 2>/dev/null`
118 HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
119 CFLAGS=${CFLAGS-"-O"}
120 # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
121 LDSHARED=${LDSHARED-"ld -b"}
122 case `(uname -m || echo unknown) 2>/dev/null` in
125 SHAREDLIB='libz.so' ;;
128 SHAREDLIB='libz.sl' ;;
130 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
131 CFLAGS=${CFLAGS-"-ansi -O2"}
132 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
133 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
134 CFLAGS=${CFLAGS-"-O -std1"}
135 LDFLAGS="${LDFLAGS} -Wl,-rpath,."
136 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
137 OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
138 CFLAGS=${CFLAGS-"-O -std1"}
139 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
140 QNX*) SFLAGS=${CFLAGS-"-4 -O"}
141 CFLAGS=${CFLAGS-"-4 -O"}
142 LDSHARED=${LDSHARED-"cc"}
143 RANLIB=${RANLIB-"true"}
145 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
146 CFLAGS=${CFLAGS-"-O3"}
147 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
148 SunOS\ 5*) LDSHARED=${LDSHARED-"cc -G"}
149 case `(uname -m || echo unknown) 2>/dev/null` in
151 SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
152 CFLAGS=${CFLAGS-"-xpentium -fast"} ;;
154 SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
155 CFLAGS=${CFLAGS-"-fast -xcg92"} ;;
157 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
158 CFLAGS=${CFLAGS-"-O2"}
159 LDSHARED=${LDSHARED-"ld"} ;;
160 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
161 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
162 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
163 UNIX_System_V\ 4.2.0)
164 SFLAGS=${CFLAGS-"-KPIC -O"}
165 CFLAGS=${CFLAGS-"-O"}
166 LDSHARED=${LDSHARED-"cc -G"} ;;
168 SFLAGS=${CFLAGS-"-Kconform_pic -O"}
169 CFLAGS=${CFLAGS-"-O"}
170 LDSHARED=${LDSHARED-"cc -G"} ;;
172 SFLAGS=${CFLAGS-"-KPIC -O"}
173 CFLAGS=${CFLAGS-"-O"}
174 LDSHARED=${LDSHARED-"cc -G"} ;;
175 AIX*) # Courtesy of dbakker@arrayasolutions.com
176 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
177 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
178 LDSHARED=${LDSHARED-"xlc -G"} ;;
179 # send working options for other systems to zlib@gzip.org
180 *) SFLAGS=${CFLAGS-"-O"}
181 CFLAGS=${CFLAGS-"-O"}
182 LDSHARED=${LDSHARED-"cc -shared"} ;;
186 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
187 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
188 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
190 if test $shared -eq 1; then
191 echo Checking for shared library support...
192 # we must test in two steps (cc then ld), required at least on SunOS 4.x
193 if test "`($CC -w -c $SFLAGS $test.c) 2>&1`" = "" &&
194 test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
195 echo Building shared library $SHAREDLIBV with $CC.
196 elif test -z "$old_cc" -a -z "$old_cflags"; then
197 echo No shared library support.
200 echo Tested $CC -w -c $SFLAGS $test.c
201 $CC -w -c $SFLAGS $test.c
202 echo Tested $LDSHARED -o $test$shared_ext $test.o
203 $LDSHARED -o $test$shared_ext $test.o
204 echo 'No shared library support; try without defining CC and CFLAGS'
208 if test $shared -eq 0; then
211 TEST="all teststatic"
212 echo Building static library $STATICLIB version $VER with $CC.
215 TEST="all teststatic testshared"
219 #include <sys/types.h>
222 if test "`($CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c) 2>&1`" = ""; then
223 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
224 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
226 TEST="${TEST} test64"
227 echo "Checking for off64_t... Yes."
228 echo "Checking for fseeko... Yes."
230 echo "Checking for off64_t... No."
238 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
239 echo "Checking for fseeko... Yes."
241 CFLAGS="${CFLAGS} -DNO_FSEEKO"
242 SFLAGS="${SFLAGS} -DNO_FSEEKO"
243 echo "Checking for fseeko... No."
247 cp -p zconf.in.h zconf.h
251 int main() { return 0; }
253 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
254 sed < zconf.h "/#ifdef HAVE_UNISTD_H/s/def HAVE_UNISTD_H/ 1/" > zconf.temp.h
255 mv zconf.temp.h zconf.h
256 echo "Checking for unistd.h... Yes."
258 echo "Checking for unistd.h... No."
261 if test $zprefix -eq 1; then
262 sed < zconf.h "/#ifdef Z_PREFIX/s/def Z_PREFIX/ 1/" > zconf.temp.h
263 mv zconf.temp.h zconf.h
264 echo "Using z_ prefix on all symbols."
282 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
283 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()."
289 int mytest(const char *fmt, ...)
295 vsnprintf(buf, sizeof(buf), fmt, ap);
302 return (mytest("Hello%d\n", 1));
306 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
307 echo "Checking for vsnprintf() in stdio.h... Yes."
313 int mytest(char *fmt, ...)
320 n = vsnprintf(buf, sizeof(buf), fmt, ap);
327 return (mytest("Hello%d\n", 1));
331 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
332 echo "Checking for return value of vsnprintf()... Yes."
334 CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
335 SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
336 echo "Checking for return value of vsnprintf()... No."
337 echo " WARNING: apparently vsnprintf() does not return a value. zlib"
338 echo " can build but will be open to possible string-format security"
339 echo " vulnerabilities."
342 CFLAGS="$CFLAGS -DNO_vsnprintf"
343 SFLAGS="$SFLAGS -DNO_vsnprintf"
344 echo "Checking for vsnprintf() in stdio.h... No."
345 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
346 echo " can build but will be open to possible buffer-overflow security"
347 echo " vulnerabilities."
353 int mytest(const char *fmt, ...)
360 n = vsprintf(buf, fmt, ap);
367 return (mytest("Hello%d\n", 1));
371 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
372 echo "Checking for return value of vsprintf()... Yes."
374 CFLAGS="$CFLAGS -DHAS_vsprintf_void"
375 SFLAGS="$SFLAGS -DHAS_vsprintf_void"
376 echo "Checking for return value of vsprintf()... No."
377 echo " WARNING: apparently vsprintf() does not return a value. zlib"
378 echo " can build but will be open to possible string-format security"
379 echo " vulnerabilities."
383 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()."
392 snprintf(buf, sizeof(buf), "%s", "foo");
402 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
403 echo "Checking for snprintf() in stdio.h... Yes."
412 return snprintf(buf, sizeof(buf), "%s", "foo");
421 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
422 echo "Checking for return value of snprintf()... Yes."
424 CFLAGS="$CFLAGS -DHAS_snprintf_void"
425 SFLAGS="$SFLAGS -DHAS_snprintf_void"
426 echo "Checking for return value of snprintf()... No."
427 echo " WARNING: apparently snprintf() does not return a value. zlib"
428 echo " can build but will be open to possible string-format security"
429 echo " vulnerabilities."
432 CFLAGS="$CFLAGS -DNO_snprintf"
433 SFLAGS="$SFLAGS -DNO_snprintf"
434 echo "Checking for snprintf() in stdio.h... No."
435 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"
436 echo " can build but will be open to possible buffer-overflow security"
437 echo " vulnerabilities."
446 return sprintf(buf, "%s", "foo");
455 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
456 echo "Checking for return value of sprintf()... Yes."
458 CFLAGS="$CFLAGS -DHAS_sprintf_void"
459 SFLAGS="$SFLAGS -DHAS_sprintf_void"
460 echo "Checking for return value of sprintf()... No."
461 echo " WARNING: apparently sprintf() does not return a value. zlib"
462 echo " can build but will be open to possible string-format security"
463 echo " vulnerabilities."
470 int main() { return 0; }
472 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
473 echo "Checking for errno.h... Yes."
475 echo "Checking for errno.h... No."
476 CFLAGS="$CFLAGS -DNO_ERRNO_H"
477 SFLAGS="$SFLAGS -DNO_ERRNO_H"
483 if test "`nm $test.o | grep _hello`" = ""; then
484 CPP="$CPP -DNO_UNDERLINE"
485 echo Checking for underline in external names... No.
487 echo Checking for underline in external names... Yes.
491 rm -f $test.[co] $test $test$shared_ext
496 /^CFLAGS *=/s#=.*#=$CFLAGS#
497 /^SFLAGS *=/s#=.*#=$SFLAGS#
498 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
499 /^LDSHARED *=/s#=.*#=$LDSHARED#
500 /^CPP *=/s#=.*#=$CPP#
501 /^STATICLIB *=/s#=.*#=$STATICLIB#
502 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
503 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
504 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
505 /^AR *=/s#=.*#=$AR_RC#
506 /^RANLIB *=/s#=.*#=$RANLIB#
507 /^EXE *=/s#=.*#=$EXE#
508 /^prefix *=/s#=.*#=$prefix#
509 /^exec_prefix *=/s#=.*#=$exec_prefix#
510 /^libdir *=/s#=.*#=$libdir#
511 /^includedir *=/s#=.*#=$includedir#
512 /^mandir *=/s#=.*#=$mandir#
513 /^all: */s#:.*#: $ALL#
514 /^test: */s#:.*#: $TEST#
519 /^CFLAGS *=/s#=.*#=$CFLAGS#
520 /^CPP *=/s#=.*#=$CPP#
521 /^LDSHARED *=/s#=.*#=$LDSHARED#
522 /^STATICLIB *=/s#=.*#=$STATICLIB#
523 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
524 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
525 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
526 /^AR *=/s#=.*#=$AR_RC#
527 /^RANLIB *=/s#=.*#=$RANLIB#
528 /^EXE *=/s#=.*#=$EXE#
529 /^prefix *=/s#=.*#=$prefix#
530 /^exec_prefix *=/s#=.*#=$exec_prefix#
531 /^libdir *=/s#=.*#=$libdir#
532 /^includedir *=/s#=.*#=$includedir#
533 /^mandir *=/s#=.*#=$mandir#
534 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
536 s/\@VERSION\@/$VER/g;