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comparison mupdf-source/thirdparty/zlib/configure @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 #!/bin/sh
2 # configure script for zlib.
3 #
4 # Normally configure builds both a static and a shared library.
5 # If you want to build just a static library, use: ./configure --static
6 #
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)
11
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
14 # an error.
15
16 # start off configure.log
17 echo -------------------- >> configure.log
18 echo $0 $* >> configure.log
19 date >> configure.log
20
21 # get source directory
22 SRCDIR=`dirname $0`
23 if test $SRCDIR = "."; then
24 ZINC=""
25 ZINCOUT="-I."
26 SRCDIR=""
27 else
28 ZINC='-I. -include zconf.h'
29 ZINCOUT='-I. -I$(SRCDIR)'
30 SRCDIR="$SRCDIR/"
31 fi
32
33 # set command prefix for cross-compilation
34 if [ -n "${CHOST}" ]; then
35 uname=${CHOST}
36 mname=${CHOST}
37 CROSS_PREFIX="${CHOST}-"
38 else
39 mname=`(uname -a || echo unknown) 2>/dev/null`
40 fi
41
42 # destination name for static library
43 STATICLIB=libz.a
44
45 # extract zlib version numbers from zlib.h
46 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
47 VER3=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\(\\.[0-9]\{1,\}\)\{1,2\}\).*/\1/p'`
48 VER1=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\)\\..*/\1/p'`
49
50 # establish commands for library building
51 if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
52 AR=${AR-"${CROSS_PREFIX}ar"}
53 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
54 else
55 AR=${AR-"ar"}
56 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
57 fi
58 ARFLAGS=${ARFLAGS-"rc"}
59 if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
60 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
61 test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
62 else
63 RANLIB=${RANLIB-"ranlib"}
64 fi
65 if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
66 NM=${NM-"${CROSS_PREFIX}nm"}
67 test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
68 else
69 NM=${NM-"nm"}
70 fi
71
72 # set defaults before processing command line options
73 LDCONFIG=${LDCONFIG-"ldconfig"}
74 LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
75 ARCHS=
76 prefix=${prefix-/usr/local}
77 exec_prefix=${exec_prefix-'${prefix}'}
78 libdir=${libdir-'${exec_prefix}/lib'}
79 sharedlibdir=${sharedlibdir-'${libdir}'}
80 includedir=${includedir-'${prefix}/include'}
81 mandir=${mandir-'${prefix}/share/man'}
82 shared_ext='.so'
83 shared=1
84 solo=0
85 cover=0
86 zprefix=0
87 zconst=0
88 build64=0
89 gcc=0
90 warn=0
91 debug=0
92 address=0
93 memory=0
94 old_cc="$CC"
95 old_cflags="$CFLAGS"
96 OBJC='$(OBJZ) $(OBJG)'
97 PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
98
99 # leave this script, optionally in a bad way
100 leave()
101 {
102 if test "$*" != "0"; then
103 echo "** $0 aborting." | tee -a configure.log
104 fi
105 rm -rf $test.[co] $test $test$shared_ext $test.gcno $test.dSYM ./--version
106 echo -------------------- >> configure.log
107 echo >> configure.log
108 echo >> configure.log
109 exit $1
110 }
111
112 # process command line options
113 while test $# -ge 1
114 do
115 case "$1" in
116 -h* | --help)
117 echo 'usage:' | tee -a configure.log
118 echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
119 echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
120 echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
121 exit 0 ;;
122 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
123 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
124 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
125 --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
126 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
127 -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
128 -p* | --prefix) prefix="$2"; shift; shift ;;
129 -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
130 -l* | --libdir) libdir="$2"; shift; shift ;;
131 -i* | --includedir) includedir="$2"; shift; shift ;;
132 -s* | --shared | --enable-shared) shared=1; shift ;;
133 -t | --static) shared=0; shift ;;
134 --solo) solo=1; shift ;;
135 --cover) cover=1; shift ;;
136 -z* | --zprefix) zprefix=1; shift ;;
137 -6* | --64) build64=1; shift ;;
138 -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
139 --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
140 --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
141 -c* | --const) zconst=1; shift ;;
142 -w* | --warn) warn=1; shift ;;
143 -d* | --debug) debug=1; shift ;;
144 --sanitize) address=1; shift ;;
145 --address) address=1; shift ;;
146 --memory) memory=1; shift ;;
147 *)
148 echo "unknown option: $1" | tee -a configure.log
149 echo "$0 --help for help" | tee -a configure.log
150 leave 1;;
151 esac
152 done
153
154 # temporary file name
155 test=ztest$$
156
157 # put arguments in log, also put test file in log if used in arguments
158 show()
159 {
160 case "$*" in
161 *$test.c*)
162 echo === $test.c === >> configure.log
163 cat $test.c >> configure.log
164 echo === >> configure.log;;
165 esac
166 echo $* >> configure.log
167 }
168
169 # check for gcc vs. cc and set compile and link flags based on the system identified by uname
170 cat > $test.c <<EOF
171 extern int getchar();
172 int hello() {return getchar();}
173 EOF
174
175 if test -z "$CC"; then
176 echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
177 if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then
178 cc=${CROSS_PREFIX}gcc
179 else
180 cc=${CROSS_PREFIX}cc
181 fi
182 else
183 cc=${CC}
184 fi
185
186 case "$cc" in
187 *gcc*) gcc=1 ;;
188 *clang*) gcc=1 ;;
189 esac
190 case `$cc -v 2>&1` in
191 *gcc*) gcc=1 ;;
192 *clang*) gcc=1 ;;
193 esac
194
195 show $cc -c $test.c
196 if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
197 echo ... using gcc >> configure.log
198 CC="$cc"
199 CFLAGS="${CFLAGS--O3}"
200 SFLAGS="${CFLAGS--O3} -fPIC"
201 if test "$ARCHS"; then
202 CFLAGS="${CFLAGS} ${ARCHS}"
203 LDFLAGS="${LDFLAGS} ${ARCHS}"
204 fi
205 if test $build64 -eq 1; then
206 CFLAGS="${CFLAGS} -m64"
207 SFLAGS="${SFLAGS} -m64"
208 fi
209 if test "$warn" -eq 1; then
210 if test "$zconst" -eq 1; then
211 CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST"
212 else
213 CFLAGS="${CFLAGS} -Wall -Wextra"
214 fi
215 fi
216 if test $address -eq 1; then
217 CFLAGS="${CFLAGS} -g -fsanitize=address -fno-omit-frame-pointer"
218 fi
219 if test $memory -eq 1; then
220 CFLAGS="${CFLAGS} -g -fsanitize=memory -fno-omit-frame-pointer"
221 fi
222 if test $debug -eq 1; then
223 CFLAGS="${CFLAGS} -DZLIB_DEBUG"
224 SFLAGS="${SFLAGS} -DZLIB_DEBUG"
225 fi
226 if test -z "$uname"; then
227 uname=`(uname -s || echo unknown) 2>/dev/null`
228 fi
229 case "$uname" in
230 Linux* | linux* | *-linux* | GNU | GNU/* | solaris*)
231 case "$mname" in
232 *sparc*)
233 LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;;
234 esac
235 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
236 *BSD | *bsd* | DragonFly)
237 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
238 LDCONFIG="ldconfig -m" ;;
239 CYGWIN* | Cygwin* | cygwin* | *-cygwin* | OS/2*)
240 EXE='.exe' ;;
241 MINGW* | mingw* | *-mingw*)
242 rm -f $test.[co] $test $test$shared_ext
243 echo "If this doesn't work for you, try win32/Makefile.gcc." | tee -a configure.log
244 LDSHARED=${LDSHARED-"$cc -shared"}
245 LDSHAREDLIBC=""
246 EXE='.exe' ;;
247 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
248 # (alain.bonnefoy@icbt.com)
249 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
250 HP-UX*)
251 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
252 case `(uname -m || echo unknown) 2>/dev/null` in
253 ia64)
254 shared_ext='.so'
255 SHAREDLIB='libz.so' ;;
256 *)
257 shared_ext='.sl'
258 SHAREDLIB='libz.sl' ;;
259 esac ;;
260 AIX*)
261 LDFLAGS="${LDFLAGS} -Wl,-brtl" ;;
262 Darwin* | darwin* | *-darwin*)
263 shared_ext='.dylib'
264 SHAREDLIB=libz$shared_ext
265 SHAREDLIBV=libz.$VER$shared_ext
266 SHAREDLIBM=libz.$VER1$shared_ext
267 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
268 if "${CROSS_PREFIX}libtool" -V 2>&1 | grep Apple > /dev/null; then
269 AR="${CROSS_PREFIX}libtool"
270 elif libtool -V 2>&1 | grep Apple > /dev/null; then
271 AR="libtool"
272 else
273 AR="/usr/bin/libtool"
274 fi
275 ARFLAGS="-o" ;;
276 *)
277 LDSHARED=${LDSHARED-"$cc -shared"} ;;
278 esac
279 else
280 # find system name and corresponding cc options
281 CC=${CC-cc}
282 gcc=0
283 echo ... using $CC >> configure.log
284 if test -z "$uname"; then
285 uname=`(uname -sr || echo unknown) 2>/dev/null`
286 fi
287 case "$uname" in
288 HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
289 CFLAGS=${CFLAGS-"-O"}
290 # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
291 LDSHARED=${LDSHARED-"ld -b"}
292 case `(uname -m || echo unknown) 2>/dev/null` in
293 ia64)
294 shared_ext='.so'
295 SHAREDLIB='libz.so' ;;
296 *)
297 shared_ext='.sl'
298 SHAREDLIB='libz.sl' ;;
299 esac ;;
300 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
301 CFLAGS=${CFLAGS-"-ansi -O2"}
302 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
303 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
304 CFLAGS=${CFLAGS-"-O -std1"}
305 LDFLAGS="${LDFLAGS} -Wl,-rpath,."
306 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
307 OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
308 CFLAGS=${CFLAGS-"-O -std1"}
309 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
310 QNX*) SFLAGS=${CFLAGS-"-4 -O"}
311 CFLAGS=${CFLAGS-"-4 -O"}
312 LDSHARED=${LDSHARED-"cc"}
313 RANLIB=${RANLIB-"true"}
314 AR="cc"
315 ARFLAGS="-A" ;;
316 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
317 CFLAGS=${CFLAGS-"-O3"}
318 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
319 SunOS\ 5* | solaris*)
320 LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
321 SFLAGS=${CFLAGS-"-fast -KPIC"}
322 CFLAGS=${CFLAGS-"-fast"}
323 if test $build64 -eq 1; then
324 # old versions of SunPRO/Workshop/Studio don't support -m64,
325 # but newer ones do. Check for it.
326 flag64=`$CC -flags | egrep -- '^-m64'`
327 if test x"$flag64" != x"" ; then
328 CFLAGS="${CFLAGS} -m64"
329 SFLAGS="${SFLAGS} -m64"
330 else
331 case `(uname -m || echo unknown) 2>/dev/null` in
332 i86*)
333 SFLAGS="$SFLAGS -xarch=amd64"
334 CFLAGS="$CFLAGS -xarch=amd64" ;;
335 *)
336 SFLAGS="$SFLAGS -xarch=v9"
337 CFLAGS="$CFLAGS -xarch=v9" ;;
338 esac
339 fi
340 fi
341 if test -n "$ZINC"; then
342 ZINC='-I- -I. -I$(SRCDIR)'
343 fi
344 ;;
345 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
346 CFLAGS=${CFLAGS-"-O2"}
347 LDSHARED=${LDSHARED-"ld"} ;;
348 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
349 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
350 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
351 UNIX_System_V\ 4.2.0)
352 SFLAGS=${CFLAGS-"-KPIC -O"}
353 CFLAGS=${CFLAGS-"-O"}
354 LDSHARED=${LDSHARED-"cc -G"} ;;
355 UNIX_SV\ 4.2MP)
356 SFLAGS=${CFLAGS-"-Kconform_pic -O"}
357 CFLAGS=${CFLAGS-"-O"}
358 LDSHARED=${LDSHARED-"cc -G"} ;;
359 OpenUNIX\ 5)
360 SFLAGS=${CFLAGS-"-KPIC -O"}
361 CFLAGS=${CFLAGS-"-O"}
362 LDSHARED=${LDSHARED-"cc -G"} ;;
363 AIX*) # Courtesy of dbakker@arrayasolutions.com
364 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
365 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
366 LDSHARED=${LDSHARED-"xlc -G"} ;;
367 # send working options for other systems to zlib@gzip.org
368 *) SFLAGS=${CFLAGS-"-O"}
369 CFLAGS=${CFLAGS-"-O"}
370 LDSHARED=${LDSHARED-"cc -shared"} ;;
371 esac
372 fi
373
374 # destination names for shared library if not defined above
375 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
376 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
377 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
378
379 echo >> configure.log
380
381 # define functions for testing compiler and library characteristics and logging the results
382
383 cat > $test.c <<EOF
384 #error error
385 EOF
386 if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
387 try()
388 {
389 show $*
390 test "`( $* ) 2>&1 | tee -a configure.log`" = ""
391 }
392 echo - using any output from compiler to indicate an error >> configure.log
393 else
394 try()
395 {
396 show $*
397 got=`( $* ) 2>&1`
398 ret=$?
399 if test "$got" != ""; then
400 printf "%s\n" "$got" >> configure.log
401 fi
402 if test $ret -ne 0; then
403 echo "(exit code "$ret")" >> configure.log
404 fi
405 return $ret
406 }
407 fi
408
409 tryboth()
410 {
411 show $*
412 got=`( $* ) 2>&1`
413 ret=$?
414 if test "$got" != ""; then
415 printf "%s\n" "$got" >> configure.log
416 fi
417 if test $ret -ne 0; then
418 echo "(exit code "$ret")" >> configure.log
419 return $ret
420 fi
421 test "$got" = ""
422 }
423
424 cat > $test.c << EOF
425 int foo() { return 0; }
426 EOF
427 echo "Checking for obsessive-compulsive compiler options..." >> configure.log
428 if try $CC -c $CFLAGS $test.c; then
429 :
430 else
431 echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
432 leave 1
433 fi
434
435 echo >> configure.log
436
437 # see if shared library build supported
438 cat > $test.c <<EOF
439 extern int getchar();
440 int hello() {return getchar();}
441 EOF
442 if test $shared -eq 1; then
443 echo Checking for shared library support... | tee -a configure.log
444 # we must test in two steps (cc then ld), required at least on SunOS 4.x
445 if try $CC -c $SFLAGS $test.c &&
446 try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
447 echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
448 elif test -z "$old_cc" -a -z "$old_cflags"; then
449 echo No shared library support. | tee -a configure.log
450 shared=0;
451 else
452 echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
453 shared=0;
454 fi
455 fi
456 if test $shared -eq 0; then
457 LDSHARED="$CC"
458 ALL="static"
459 TEST="all teststatic"
460 SHAREDLIB=""
461 SHAREDLIBV=""
462 SHAREDLIBM=""
463 echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
464 else
465 ALL="static shared"
466 TEST="all teststatic testshared"
467 fi
468
469 echo >> configure.log
470
471 # check for size_t
472 cat > $test.c <<EOF
473 #include <stdio.h>
474 #include <stdlib.h>
475 size_t dummy = 0;
476 EOF
477 if try $CC -c $CFLAGS $test.c; then
478 echo "Checking for size_t... Yes." | tee -a configure.log
479 else
480 echo "Checking for size_t... No." | tee -a configure.log
481 # find a size_t integer type
482 # check for long long
483 cat > $test.c << EOF
484 long long dummy = 0;
485 EOF
486 if try $CC -c $CFLAGS $test.c; then
487 echo "Checking for long long... Yes." | tee -a configure.log
488 cat > $test.c <<EOF
489 #include <stdio.h>
490 int main(void) {
491 if (sizeof(void *) <= sizeof(int)) puts("int");
492 else if (sizeof(void *) <= sizeof(long)) puts("long");
493 else puts("z_longlong");
494 return 0;
495 }
496 EOF
497 else
498 echo "Checking for long long... No." | tee -a configure.log
499 cat > $test.c <<EOF
500 #include <stdio.h>
501 int main(void) {
502 if (sizeof(void *) <= sizeof(int)) puts("int");
503 else puts("long");
504 return 0;
505 }
506 EOF
507 fi
508 if try $CC $CFLAGS -o $test $test.c; then
509 sizet=`./$test`
510 echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
511 CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
512 SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
513 else
514 echo "Checking for a pointer-size integer type... not found." | tee -a configure.log
515 fi
516 fi
517
518 echo >> configure.log
519
520 # check for large file support, and if none, check for fseeko()
521 cat > $test.c <<EOF
522 #include <sys/types.h>
523 off64_t dummy = 0;
524 EOF
525 if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
526 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
527 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
528 ALL="${ALL} all64"
529 TEST="${TEST} test64"
530 echo "Checking for off64_t... Yes." | tee -a configure.log
531 echo "Checking for fseeko... Yes." | tee -a configure.log
532 else
533 echo "Checking for off64_t... No." | tee -a configure.log
534 echo >> configure.log
535 cat > $test.c <<EOF
536 #include <stdio.h>
537 int main(void) {
538 fseeko(NULL, 0, 0);
539 return 0;
540 }
541 EOF
542 if try $CC $CFLAGS -o $test $test.c; then
543 echo "Checking for fseeko... Yes." | tee -a configure.log
544 else
545 CFLAGS="${CFLAGS} -DNO_FSEEKO"
546 SFLAGS="${SFLAGS} -DNO_FSEEKO"
547 echo "Checking for fseeko... No." | tee -a configure.log
548 fi
549 fi
550
551 echo >> configure.log
552
553 # check for strerror() for use by gz* functions
554 cat > $test.c <<EOF
555 #include <string.h>
556 #include <errno.h>
557 int main() { return strlen(strerror(errno)); }
558 EOF
559 if try $CC $CFLAGS -o $test $test.c; then
560 echo "Checking for strerror... Yes." | tee -a configure.log
561 else
562 CFLAGS="${CFLAGS} -DNO_STRERROR"
563 SFLAGS="${SFLAGS} -DNO_STRERROR"
564 echo "Checking for strerror... No." | tee -a configure.log
565 fi
566
567 # copy clean zconf.h for subsequent edits
568 cp -p ${SRCDIR}zconf.h.in zconf.h
569
570 echo >> configure.log
571
572 # check for unistd.h and save result in zconf.h
573 cat > $test.c <<EOF
574 #include <unistd.h>
575 int main() { return 0; }
576 EOF
577 if try $CC -c $CFLAGS $test.c; then
578 sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
579 mv zconf.temp.h zconf.h
580 echo "Checking for unistd.h... Yes." | tee -a configure.log
581 else
582 echo "Checking for unistd.h... No." | tee -a configure.log
583 fi
584
585 echo >> configure.log
586
587 # check for stdarg.h and save result in zconf.h
588 cat > $test.c <<EOF
589 #include <stdarg.h>
590 int main() { return 0; }
591 EOF
592 if try $CC -c $CFLAGS $test.c; then
593 sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
594 mv zconf.temp.h zconf.h
595 echo "Checking for stdarg.h... Yes." | tee -a configure.log
596 else
597 echo "Checking for stdarg.h... No." | tee -a configure.log
598 fi
599
600 # if the z_ prefix was requested, save that in zconf.h
601 if test $zprefix -eq 1; then
602 sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
603 mv zconf.temp.h zconf.h
604 echo >> configure.log
605 echo "Using z_ prefix on all symbols." | tee -a configure.log
606 fi
607
608 # if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
609 if test $solo -eq 1; then
610 sed '/#define ZCONF_H/a\
611 #define Z_SOLO
612
613 ' < zconf.h > zconf.temp.h
614 mv zconf.temp.h zconf.h
615 OBJC='$(OBJZ)'
616 PIC_OBJC='$(PIC_OBJZ)'
617 fi
618
619 # if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
620 if test $cover -eq 1; then
621 CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
622 if test -n "$GCC_CLASSIC"; then
623 CC=$GCC_CLASSIC
624 fi
625 fi
626
627 echo >> configure.log
628
629 # conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
630 # (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
631 # return value. The most secure result is vsnprintf() with a return value. snprintf() with a
632 # return value is secure as well, but then gzprintf() will be limited to 20 arguments.
633 cat > $test.c <<EOF
634 #include <stdio.h>
635 #include <stdarg.h>
636 #include "zconf.h"
637 int main()
638 {
639 #ifndef STDC
640 choke me
641 #endif
642 return 0;
643 }
644 EOF
645 if try $CC -c $CFLAGS $test.c; then
646 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
647
648 echo >> configure.log
649 cat > $test.c <<EOF
650 #include <stdio.h>
651 #include <stdarg.h>
652 int mytest(const char *fmt, ...)
653 {
654 char buf[20];
655 va_list ap;
656 va_start(ap, fmt);
657 vsnprintf(buf, sizeof(buf), fmt, ap);
658 va_end(ap);
659 return 0;
660 }
661 int main()
662 {
663 return (mytest("Hello%d\n", 1));
664 }
665 EOF
666 if try $CC $CFLAGS -o $test $test.c; then
667 echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
668
669 echo >> configure.log
670 cat >$test.c <<EOF
671 #include <stdio.h>
672 #include <stdarg.h>
673 int mytest(const char *fmt, ...)
674 {
675 int n;
676 char buf[20];
677 va_list ap;
678 va_start(ap, fmt);
679 n = vsnprintf(buf, sizeof(buf), fmt, ap);
680 va_end(ap);
681 return n;
682 }
683 int main()
684 {
685 return (mytest("Hello%d\n", 1));
686 }
687 EOF
688
689 if try $CC -c $CFLAGS $test.c; then
690 echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
691 else
692 CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
693 SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
694 echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
695 echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
696 echo " can build but will be open to possible string-format security" | tee -a configure.log
697 echo " vulnerabilities." | tee -a configure.log
698 fi
699 else
700 CFLAGS="$CFLAGS -DNO_vsnprintf"
701 SFLAGS="$SFLAGS -DNO_vsnprintf"
702 echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
703 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
704 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
705 echo " vulnerabilities." | tee -a configure.log
706
707 echo >> configure.log
708 cat >$test.c <<EOF
709 #include <stdio.h>
710 #include <stdarg.h>
711 int mytest(const char *fmt, ...)
712 {
713 int n;
714 char buf[20];
715 va_list ap;
716 va_start(ap, fmt);
717 n = vsprintf(buf, fmt, ap);
718 va_end(ap);
719 return n;
720 }
721 int main()
722 {
723 return (mytest("Hello%d\n", 1));
724 }
725 EOF
726
727 if try $CC -c $CFLAGS $test.c; then
728 echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
729 else
730 CFLAGS="$CFLAGS -DHAS_vsprintf_void"
731 SFLAGS="$SFLAGS -DHAS_vsprintf_void"
732 echo "Checking for return value of vsprintf()... No." | tee -a configure.log
733 echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
734 echo " can build but will be open to possible string-format security" | tee -a configure.log
735 echo " vulnerabilities." | tee -a configure.log
736 fi
737 fi
738 else
739 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
740
741 echo >> configure.log
742 cat >$test.c <<EOF
743 #include <stdio.h>
744 int mytest()
745 {
746 char buf[20];
747 snprintf(buf, sizeof(buf), "%s", "foo");
748 return 0;
749 }
750 int main()
751 {
752 return (mytest());
753 }
754 EOF
755
756 if try $CC $CFLAGS -o $test $test.c; then
757 echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
758
759 echo >> configure.log
760 cat >$test.c <<EOF
761 #include <stdio.h>
762 int mytest()
763 {
764 char buf[20];
765 return snprintf(buf, sizeof(buf), "%s", "foo");
766 }
767 int main()
768 {
769 return (mytest());
770 }
771 EOF
772
773 if try $CC -c $CFLAGS $test.c; then
774 echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
775 else
776 CFLAGS="$CFLAGS -DHAS_snprintf_void"
777 SFLAGS="$SFLAGS -DHAS_snprintf_void"
778 echo "Checking for return value of snprintf()... No." | tee -a configure.log
779 echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
780 echo " can build but will be open to possible string-format security" | tee -a configure.log
781 echo " vulnerabilities." | tee -a configure.log
782 fi
783 else
784 CFLAGS="$CFLAGS -DNO_snprintf"
785 SFLAGS="$SFLAGS -DNO_snprintf"
786 echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
787 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
788 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
789 echo " vulnerabilities." | tee -a configure.log
790
791 echo >> configure.log
792 cat >$test.c <<EOF
793 #include <stdio.h>
794 int mytest()
795 {
796 char buf[20];
797 return sprintf(buf, "%s", "foo");
798 }
799 int main()
800 {
801 return (mytest());
802 }
803 EOF
804
805 if try $CC -c $CFLAGS $test.c; then
806 echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
807 else
808 CFLAGS="$CFLAGS -DHAS_sprintf_void"
809 SFLAGS="$SFLAGS -DHAS_sprintf_void"
810 echo "Checking for return value of sprintf()... No." | tee -a configure.log
811 echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
812 echo " can build but will be open to possible string-format security" | tee -a configure.log
813 echo " vulnerabilities." | tee -a configure.log
814 fi
815 fi
816 fi
817
818 # see if we can hide zlib internal symbols that are linked between separate source files
819 if test "$gcc" -eq 1; then
820 echo >> configure.log
821 cat > $test.c <<EOF
822 #define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
823 int ZLIB_INTERNAL foo;
824 int main()
825 {
826 return 0;
827 }
828 EOF
829 if tryboth $CC -c $CFLAGS $test.c; then
830 CFLAGS="$CFLAGS -DHAVE_HIDDEN"
831 SFLAGS="$SFLAGS -DHAVE_HIDDEN"
832 echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
833 else
834 echo "Checking for attribute(visibility) support... No." | tee -a configure.log
835 fi
836 fi
837
838 # show the results in the log
839 echo >> configure.log
840 echo ALL = $ALL >> configure.log
841 echo AR = $AR >> configure.log
842 echo ARFLAGS = $ARFLAGS >> configure.log
843 echo CC = $CC >> configure.log
844 echo CFLAGS = $CFLAGS >> configure.log
845 echo CPP = $CPP >> configure.log
846 echo EXE = $EXE >> configure.log
847 echo LDCONFIG = $LDCONFIG >> configure.log
848 echo LDFLAGS = $LDFLAGS >> configure.log
849 echo LDSHARED = $LDSHARED >> configure.log
850 echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
851 echo OBJC = $OBJC >> configure.log
852 echo PIC_OBJC = $PIC_OBJC >> configure.log
853 echo RANLIB = $RANLIB >> configure.log
854 echo SFLAGS = $SFLAGS >> configure.log
855 echo SHAREDLIB = $SHAREDLIB >> configure.log
856 echo SHAREDLIBM = $SHAREDLIBM >> configure.log
857 echo SHAREDLIBV = $SHAREDLIBV >> configure.log
858 echo STATICLIB = $STATICLIB >> configure.log
859 echo TEST = $TEST >> configure.log
860 echo VER = $VER >> configure.log
861 echo SRCDIR = $SRCDIR >> configure.log
862 echo exec_prefix = $exec_prefix >> configure.log
863 echo includedir = $includedir >> configure.log
864 echo libdir = $libdir >> configure.log
865 echo mandir = $mandir >> configure.log
866 echo prefix = $prefix >> configure.log
867 echo sharedlibdir = $sharedlibdir >> configure.log
868 echo uname = $uname >> configure.log
869
870 # update Makefile with the configure results
871 sed < ${SRCDIR}Makefile.in "
872 /^CC *=/s#=.*#=$CC#
873 /^CFLAGS *=/s#=.*#=$CFLAGS#
874 /^SFLAGS *=/s#=.*#=$SFLAGS#
875 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
876 /^LDSHARED *=/s#=.*#=$LDSHARED#
877 /^CPP *=/s#=.*#=$CPP#
878 /^STATICLIB *=/s#=.*#=$STATICLIB#
879 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
880 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
881 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
882 /^AR *=/s#=.*#=$AR#
883 /^ARFLAGS *=/s#=.*#=$ARFLAGS#
884 /^RANLIB *=/s#=.*#=$RANLIB#
885 /^LDCONFIG *=/s#=.*#=$LDCONFIG#
886 /^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
887 /^EXE *=/s#=.*#=$EXE#
888 /^SRCDIR *=/s#=.*#=$SRCDIR#
889 /^ZINC *=/s#=.*#=$ZINC#
890 /^ZINCOUT *=/s#=.*#=$ZINCOUT#
891 /^prefix *=/s#=.*#=$prefix#
892 /^exec_prefix *=/s#=.*#=$exec_prefix#
893 /^libdir *=/s#=.*#=$libdir#
894 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
895 /^includedir *=/s#=.*#=$includedir#
896 /^mandir *=/s#=.*#=$mandir#
897 /^OBJC *=/s#=.*#= $OBJC#
898 /^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
899 /^all: */s#:.*#: $ALL#
900 /^test: */s#:.*#: $TEST#
901 " > Makefile
902
903 # create zlib.pc with the configure results
904 sed < ${SRCDIR}zlib.pc.in "
905 /^CC *=/s#=.*#=$CC#
906 /^CFLAGS *=/s#=.*#=$CFLAGS#
907 /^CPP *=/s#=.*#=$CPP#
908 /^LDSHARED *=/s#=.*#=$LDSHARED#
909 /^STATICLIB *=/s#=.*#=$STATICLIB#
910 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
911 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
912 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
913 /^AR *=/s#=.*#=$AR#
914 /^ARFLAGS *=/s#=.*#=$ARFLAGS#
915 /^RANLIB *=/s#=.*#=$RANLIB#
916 /^EXE *=/s#=.*#=$EXE#
917 /^prefix *=/s#=.*#=$prefix#
918 /^exec_prefix *=/s#=.*#=$exec_prefix#
919 /^libdir *=/s#=.*#=$libdir#
920 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
921 /^includedir *=/s#=.*#=$includedir#
922 /^mandir *=/s#=.*#=$mandir#
923 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
924 " | sed -e "
925 s/\@VERSION\@/$VER/g;
926 " > zlib.pc
927
928 # done
929 leave 0