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 $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
12 # Incorrect settings of CC or CFLAGS may prevent creating a shared library.
13 # If you have problems, try without defining CC and CFLAGS before reporting
16 if [ -n "${CHOST}" ]; then
17 uname="$(echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/')"
18 CROSS_PREFIX="${CHOST}-"
22 LDFLAGS="${LDFLAGS} -L. ${STATICLIB}"
23 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
24 VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
25 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
26 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
27 if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
28 AR=${AR-"${CROSS_PREFIX}ar"}
29 test -n "${CROSS_PREFIX}" && echo Using ${AR}
32 test -n "${CROSS_PREFIX}" && echo Using ${AR}
35 if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
36 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
37 test -n "${CROSS_PREFIX}" && echo Using ${RANLIB}
39 RANLIB=${RANLIB-"ranlib"}
41 if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
42 NM=${NM-"${CROSS_PREFIX}nm"}
43 test -n "${CROSS_PREFIX}" && echo Using ${NM}
47 LDCONFIG=${LDCONFIG-"ldconfig"}
48 LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
49 prefix=${prefix-/usr/local}
50 exec_prefix=${exec_prefix-'${prefix}'}
51 libdir=${libdir-'${exec_prefix}/lib'}
52 sharedlibdir=${sharedlibdir-'${exec_prefix}/lib'}
53 includedir=${includedir-'${prefix}/include'}
54 mandir=${mandir-'${prefix}/share/man'}
68 echo ' configure [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]'
69 echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]'
70 echo ' [--includedir=INCLUDEDIR]'
72 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
73 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
74 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
75 --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
76 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
77 -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
78 -p* | --prefix) prefix="$2"; shift; shift ;;
79 -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
80 -l* | --libdir) libdir="$2"; shift; shift ;;
81 -i* | --includedir) includedir="$2"; shift; shift ;;
82 -s* | --shared | --enable-shared) shared=1; shift ;;
83 -t | --static) shared=0; shift ;;
84 -z* | --zprefix) zprefix=1; shift ;;
85 -6* | --64) build64=1; shift ;;
86 --sysconfdir=*) echo "ignored option: --sysconfdir"; shift ;;
87 --localstatedir=*) echo "ignored option: --localstatedir"; shift ;;
88 *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1 ;;
95 int hello() {return getchar();}
98 test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc...
99 cc=${CC-${CROSS_PREFIX}gcc}
100 cflags=${CFLAGS-"-O3"}
101 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
106 if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
108 SFLAGS="${CFLAGS--O3} -fPIC"
109 CFLAGS="${CFLAGS--O3}"
110 if test $build64 -eq 1; then
111 CFLAGS="${CFLAGS} -m64"
112 SFLAGS="${SFLAGS} -m64"
114 if test "${ZLIBGCCWARN}" = "YES"; then
115 CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
117 if test -z "$uname"; then
118 uname=`(uname -s || echo unknown) 2>/dev/null`
121 Linux* | linux* | GNU | GNU/* | *BSD | DragonFly) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
122 CYGWIN* | Cygwin* | cygwin* | OS/2*)
125 LDSHARED=${LDSHARED-"$cc -shared"}
128 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
129 # (alain.bonnefoy@icbt.com)
130 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
132 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
133 case `(uname -m || echo unknown) 2>/dev/null` in
136 SHAREDLIB='libz.so' ;;
139 SHAREDLIB='libz.sl' ;;
141 Darwin*) shared_ext='.dylib'
142 SHAREDLIB=libz$shared_ext
143 SHAREDLIBV=libz.$VER$shared_ext
144 SHAREDLIBM=libz.$VER1$shared_ext
145 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} ;;
146 *) LDSHARED=${LDSHARED-"$cc -shared"} ;;
149 # find system name and corresponding cc options
152 if test -z "$uname"; then
153 uname=`(uname -sr || echo unknown) 2>/dev/null`
156 HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
157 CFLAGS=${CFLAGS-"-O"}
158 # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
159 LDSHARED=${LDSHARED-"ld -b"}
160 case `(uname -m || echo unknown) 2>/dev/null` in
163 SHAREDLIB='libz.so' ;;
166 SHAREDLIB='libz.sl' ;;
168 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
169 CFLAGS=${CFLAGS-"-ansi -O2"}
170 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
171 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
172 CFLAGS=${CFLAGS-"-O -std1"}
173 LDFLAGS="${LDFLAGS} -Wl,-rpath,."
174 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
175 OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
176 CFLAGS=${CFLAGS-"-O -std1"}
177 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
178 QNX*) SFLAGS=${CFLAGS-"-4 -O"}
179 CFLAGS=${CFLAGS-"-4 -O"}
180 LDSHARED=${LDSHARED-"cc"}
181 RANLIB=${RANLIB-"true"}
183 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
184 CFLAGS=${CFLAGS-"-O3"}
185 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
186 SunOS\ 5*) LDSHARED=${LDSHARED-"cc -G"}
187 case `(uname -m || echo unknown) 2>/dev/null` in
189 SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
190 CFLAGS=${CFLAGS-"-xpentium -fast"} ;;
192 SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
193 CFLAGS=${CFLAGS-"-fast -xcg92"} ;;
195 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
196 CFLAGS=${CFLAGS-"-O2"}
197 LDSHARED=${LDSHARED-"ld"} ;;
198 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
199 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
200 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
201 UNIX_System_V\ 4.2.0)
202 SFLAGS=${CFLAGS-"-KPIC -O"}
203 CFLAGS=${CFLAGS-"-O"}
204 LDSHARED=${LDSHARED-"cc -G"} ;;
206 SFLAGS=${CFLAGS-"-Kconform_pic -O"}
207 CFLAGS=${CFLAGS-"-O"}
208 LDSHARED=${LDSHARED-"cc -G"} ;;
210 SFLAGS=${CFLAGS-"-KPIC -O"}
211 CFLAGS=${CFLAGS-"-O"}
212 LDSHARED=${LDSHARED-"cc -G"} ;;
213 AIX*) # Courtesy of dbakker@arrayasolutions.com
214 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
215 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
216 LDSHARED=${LDSHARED-"xlc -G"} ;;
217 # send working options for other systems to zlib@gzip.org
218 *) SFLAGS=${CFLAGS-"-O"}
219 CFLAGS=${CFLAGS-"-O"}
220 LDSHARED=${LDSHARED-"cc -shared"} ;;
224 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
225 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
226 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
228 if test $shared -eq 1; then
229 echo Checking for shared library support...
230 # we must test in two steps (cc then ld), required at least on SunOS 4.x
231 if test "`($CC -w -c $SFLAGS $test.c) 2>&1`" = "" &&
232 test "`($LDSHARED $SFLAGS -o $test$shared_ext $test.o) 2>&1`" = ""; then
233 echo Building shared library $SHAREDLIBV with $CC.
234 elif test -z "$old_cc" -a -z "$old_cflags"; then
235 echo No shared library support.
238 echo Tested $CC -w -c $SFLAGS $test.c
239 $CC -w -c $SFLAGS $test.c
240 echo Tested $LDSHARED $SFLAGS -o $test$shared_ext $test.o
241 $LDSHARED $SFLAGS -o $test$shared_ext $test.o
242 echo 'No shared library support; try without defining CC and CFLAGS'
246 if test $shared -eq 0; then
249 TEST="all teststatic"
253 echo Building static library $STATICLIB version $VER with $CC.
256 TEST="all teststatic testshared"
260 #include <sys/types.h>
263 if test "`($CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c) 2>&1`" = ""; then
264 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
265 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
267 TEST="${TEST} test64"
268 echo "Checking for off64_t... Yes."
269 echo "Checking for fseeko... Yes."
271 echo "Checking for off64_t... No."
279 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
280 echo "Checking for fseeko... Yes."
282 CFLAGS="${CFLAGS} -DNO_FSEEKO"
283 SFLAGS="${SFLAGS} -DNO_FSEEKO"
284 echo "Checking for fseeko... No."
288 cp -p zconf.h.in zconf.h
292 int main() { return 0; }
294 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
295 sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
296 mv zconf.temp.h zconf.h
297 echo "Checking for unistd.h... Yes."
299 echo "Checking for unistd.h... No."
302 if test $zprefix -eq 1; then
303 sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
304 mv zconf.temp.h zconf.h
305 echo "Using z_ prefix on all symbols."
323 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
324 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()."
330 int mytest(const char *fmt, ...)
336 vsnprintf(buf, sizeof(buf), fmt, ap);
343 return (mytest("Hello%d\n", 1));
347 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
348 echo "Checking for vsnprintf() in stdio.h... Yes."
354 int mytest(const char *fmt, ...)
361 n = vsnprintf(buf, sizeof(buf), fmt, ap);
368 return (mytest("Hello%d\n", 1));
372 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
373 echo "Checking for return value of vsnprintf()... Yes."
375 CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
376 SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
377 echo "Checking for return value of vsnprintf()... No."
378 echo " WARNING: apparently vsnprintf() does not return a value. zlib"
379 echo " can build but will be open to possible string-format security"
380 echo " vulnerabilities."
383 CFLAGS="$CFLAGS -DNO_vsnprintf"
384 SFLAGS="$SFLAGS -DNO_vsnprintf"
385 echo "Checking for vsnprintf() in stdio.h... No."
386 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
387 echo " can build but will be open to possible buffer-overflow security"
388 echo " vulnerabilities."
394 int mytest(const char *fmt, ...)
401 n = vsprintf(buf, fmt, ap);
408 return (mytest("Hello%d\n", 1));
412 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
413 echo "Checking for return value of vsprintf()... Yes."
415 CFLAGS="$CFLAGS -DHAS_vsprintf_void"
416 SFLAGS="$SFLAGS -DHAS_vsprintf_void"
417 echo "Checking for return value of vsprintf()... No."
418 echo " WARNING: apparently vsprintf() does not return a value. zlib"
419 echo " can build but will be open to possible string-format security"
420 echo " vulnerabilities."
424 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()."
433 snprintf(buf, sizeof(buf), "%s", "foo");
443 if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
444 echo "Checking for snprintf() in stdio.h... Yes."
453 return snprintf(buf, sizeof(buf), "%s", "foo");
462 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
463 echo "Checking for return value of snprintf()... Yes."
465 CFLAGS="$CFLAGS -DHAS_snprintf_void"
466 SFLAGS="$SFLAGS -DHAS_snprintf_void"
467 echo "Checking for return value of snprintf()... No."
468 echo " WARNING: apparently snprintf() does not return a value. zlib"
469 echo " can build but will be open to possible string-format security"
470 echo " vulnerabilities."
473 CFLAGS="$CFLAGS -DNO_snprintf"
474 SFLAGS="$SFLAGS -DNO_snprintf"
475 echo "Checking for snprintf() in stdio.h... No."
476 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib"
477 echo " can build but will be open to possible buffer-overflow security"
478 echo " vulnerabilities."
487 return sprintf(buf, "%s", "foo");
496 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
497 echo "Checking for return value of sprintf()... Yes."
499 CFLAGS="$CFLAGS -DHAS_sprintf_void"
500 SFLAGS="$SFLAGS -DHAS_sprintf_void"
501 echo "Checking for return value of sprintf()... No."
502 echo " WARNING: apparently sprintf() does not return a value. zlib"
503 echo " can build but will be open to possible string-format security"
504 echo " vulnerabilities."
509 if test "$gcc" -eq 1; then
511 #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33)
512 # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
514 # define ZLIB_INTERNAL
516 int ZLIB_INTERNAL foo;
522 if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
523 echo "Checking for attribute(visibility) support... Yes."
525 CFLAGS="$CFLAGS -DNO_VIZ"
526 SFLAGS="$SFLAGS -DNO_VIZ"
527 echo "Checking for attribute(visibility) support... No."
534 if test "`$NM $test.o | grep _hello`" = ""; then
535 CPP="$CPP -DNO_UNDERLINE"
536 echo Checking for underline in external names... No.
538 echo Checking for underline in external names... Yes.
542 rm -f $test.[co] $test $test$shared_ext
547 /^CFLAGS *=/s#=.*#=$CFLAGS#
548 /^SFLAGS *=/s#=.*#=$SFLAGS#
549 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
550 /^LDSHARED *=/s#=.*#=$LDSHARED#
551 /^CPP *=/s#=.*#=$CPP#
552 /^STATICLIB *=/s#=.*#=$STATICLIB#
553 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
554 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
555 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
556 /^AR *=/s#=.*#=$AR_RC#
557 /^RANLIB *=/s#=.*#=$RANLIB#
558 /^LDCONFIG *=/s#=.*#=$LDCONFIG#
559 /^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
560 /^EXE *=/s#=.*#=$EXE#
561 /^prefix *=/s#=.*#=$prefix#
562 /^exec_prefix *=/s#=.*#=$exec_prefix#
563 /^libdir *=/s#=.*#=$libdir#
564 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
565 /^includedir *=/s#=.*#=$includedir#
566 /^mandir *=/s#=.*#=$mandir#
567 /^all: */s#:.*#: $ALL#
568 /^test: */s#:.*#: $TEST#
573 /^CFLAGS *=/s#=.*#=$CFLAGS#
574 /^CPP *=/s#=.*#=$CPP#
575 /^LDSHARED *=/s#=.*#=$LDSHARED#
576 /^STATICLIB *=/s#=.*#=$STATICLIB#
577 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
578 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
579 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
580 /^AR *=/s#=.*#=$AR_RC#
581 /^RANLIB *=/s#=.*#=$RANLIB#
582 /^EXE *=/s#=.*#=$EXE#
583 /^prefix *=/s#=.*#=$prefix#
584 /^exec_prefix *=/s#=.*#=$exec_prefix#
585 /^libdir *=/s#=.*#=$libdir#
586 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
587 /^includedir *=/s#=.*#=$includedir#
588 /^mandir *=/s#=.*#=$mandir#
589 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
591 s/\@VERSION\@/$VER/g;