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 # start off configure.log
17 echo -------------------- >> configure.log
18 echo $0 $* >> configure.log
21 # get source directory
23 if test $SRCDIR = "."; then
28 ZINC='-include zconf.h'
29 ZINCOUT='-I. -I$(SRCDIR)'
33 # set command prefix for cross-compilation
34 if [ -n "${CHOST}" ]; then
35 uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
36 CROSS_PREFIX="${CHOST}-"
39 # destination name for static library
42 # extract zlib version numbers from zlib.h
43 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
44 VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < ${SRCDIR}zlib.h`
45 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
46 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
48 # establish commands for library building
49 if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
50 AR=${AR-"${CROSS_PREFIX}ar"}
51 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
54 test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
56 ARFLAGS=${ARFLAGS-"rc"}
57 if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
58 RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
59 test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
61 RANLIB=${RANLIB-"ranlib"}
63 if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
64 NM=${NM-"${CROSS_PREFIX}nm"}
65 test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
70 # set defaults before processing command line options
71 LDCONFIG=${LDCONFIG-"ldconfig"}
72 LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
74 prefix=${prefix-/usr/local}
75 exec_prefix=${exec_prefix-'${prefix}'}
76 libdir=${libdir-'${exec_prefix}/lib'}
77 sharedlibdir=${sharedlibdir-'${libdir}'}
78 includedir=${includedir-'${prefix}/include'}
79 mandir=${mandir-'${prefix}/share/man'}
91 OBJC='$(OBJZ) $(OBJG)'
92 PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
94 # leave this script, optionally in a bad way
97 if test "$*" != "0"; then
98 echo "** $0 aborting." | tee -a configure.log
100 rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
101 echo -------------------- >> configure.log
102 echo >> configure.log
103 echo >> configure.log
107 # process command line options
112 echo 'usage:' | tee -a configure.log
113 echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
114 echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
115 echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
117 -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
118 -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
119 -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
120 --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
121 -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
122 -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
123 -p* | --prefix) prefix="$2"; shift; shift ;;
124 -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
125 -l* | --libdir) libdir="$2"; shift; shift ;;
126 -i* | --includedir) includedir="$2"; shift; shift ;;
127 -s* | --shared | --enable-shared) shared=1; shift ;;
128 -t | --static) shared=0; shift ;;
129 --solo) solo=1; shift ;;
130 --cover) cover=1; shift ;;
131 -z* | --zprefix) zprefix=1; shift ;;
132 -6* | --64) build64=1; shift ;;
133 -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
134 --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
135 --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
136 -c* | --const) zconst=1; shift ;;
137 -w* | --warn) warn=1; shift ;;
139 echo "unknown option: $1" | tee -a configure.log
140 echo "$0 --help for help" | tee -a configure.log
145 # temporary file name
148 # put arguments in log, also put test file in log if used in arguments
153 echo === $test.c === >> configure.log
154 cat $test.c >> configure.log
155 echo === >> configure.log;;
157 echo $* >> configure.log
160 # check for gcc vs. cc and set compile and link flags based on the system identified by uname
162 extern int getchar();
163 int hello() {return getchar();}
166 test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
167 cc=${CC-${CROSS_PREFIX}gcc}
168 cflags=${CFLAGS-"-O3"}
169 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
174 case `$cc -v 2>&1` in
179 if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
180 echo ... using gcc >> configure.log
182 CFLAGS="${CFLAGS--O3} ${ARCHS}"
183 SFLAGS="${CFLAGS--O3} -fPIC"
184 LDFLAGS="${LDFLAGS} ${ARCHS}"
185 if test $build64 -eq 1; then
186 CFLAGS="${CFLAGS} -m64"
187 SFLAGS="${SFLAGS} -m64"
189 if test "$warn" -eq 1; then
190 if test "$zconst" -eq 1; then
191 CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
193 CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
196 if test -z "$uname"; then
197 uname=`(uname -s || echo unknown) 2>/dev/null`
200 Linux* | linux* | GNU | GNU/* | solaris*)
201 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
202 *BSD | *bsd* | DragonFly)
203 LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
204 LDCONFIG="ldconfig -m" ;;
205 CYGWIN* | Cygwin* | cygwin* | OS/2*)
209 rm -f $test.[co] $test $test$shared_ext
210 echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
212 LDSHARED=${LDSHARED-"$cc -shared"}
215 QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
216 # (alain.bonnefoy@icbt.com)
217 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
219 LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
220 case `(uname -m || echo unknown) 2>/dev/null` in
223 SHAREDLIB='libz.so' ;;
226 SHAREDLIB='libz.sl' ;;
230 SHAREDLIB=libz$shared_ext
231 SHAREDLIBV=libz.$VER$shared_ext
232 SHAREDLIBM=libz.$VER1$shared_ext
233 LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
234 if libtool -V 2>&1 | grep Apple > /dev/null; then
237 AR="/usr/bin/libtool"
240 *) LDSHARED=${LDSHARED-"$cc -shared"} ;;
243 # find system name and corresponding cc options
246 echo ... using $CC >> configure.log
247 if test -z "$uname"; then
248 uname=`(uname -sr || echo unknown) 2>/dev/null`
251 HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
252 CFLAGS=${CFLAGS-"-O"}
253 # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
254 LDSHARED=${LDSHARED-"ld -b"}
255 case `(uname -m || echo unknown) 2>/dev/null` in
258 SHAREDLIB='libz.so' ;;
261 SHAREDLIB='libz.sl' ;;
263 IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
264 CFLAGS=${CFLAGS-"-ansi -O2"}
265 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
266 OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
267 CFLAGS=${CFLAGS-"-O -std1"}
268 LDFLAGS="${LDFLAGS} -Wl,-rpath,."
269 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
270 OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
271 CFLAGS=${CFLAGS-"-O -std1"}
272 LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
273 QNX*) SFLAGS=${CFLAGS-"-4 -O"}
274 CFLAGS=${CFLAGS-"-4 -O"}
275 LDSHARED=${LDSHARED-"cc"}
276 RANLIB=${RANLIB-"true"}
279 SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
280 CFLAGS=${CFLAGS-"-O3"}
281 LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
282 SunOS\ 5* | solaris*)
283 LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
284 SFLAGS=${CFLAGS-"-fast -KPIC"}
285 CFLAGS=${CFLAGS-"-fast"}
286 if test $build64 -eq 1; then
287 # old versions of SunPRO/Workshop/Studio don't support -m64,
288 # but newer ones do. Check for it.
289 flag64=`$CC -flags | egrep -- '^-m64'`
290 if test x"$flag64" != x"" ; then
291 CFLAGS="${CFLAGS} -m64"
292 SFLAGS="${SFLAGS} -m64"
294 case `(uname -m || echo unknown) 2>/dev/null` in
296 SFLAGS="$SFLAGS -xarch=amd64"
297 CFLAGS="$CFLAGS -xarch=amd64" ;;
299 SFLAGS="$SFLAGS -xarch=v9"
300 CFLAGS="$CFLAGS -xarch=v9" ;;
304 if test -n "$ZINC"; then
305 ZINC='-I- -I. -I$(SRCDIR)'
308 SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
309 CFLAGS=${CFLAGS-"-O2"}
310 LDSHARED=${LDSHARED-"ld"} ;;
311 SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
312 CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
313 LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
314 UNIX_System_V\ 4.2.0)
315 SFLAGS=${CFLAGS-"-KPIC -O"}
316 CFLAGS=${CFLAGS-"-O"}
317 LDSHARED=${LDSHARED-"cc -G"} ;;
319 SFLAGS=${CFLAGS-"-Kconform_pic -O"}
320 CFLAGS=${CFLAGS-"-O"}
321 LDSHARED=${LDSHARED-"cc -G"} ;;
323 SFLAGS=${CFLAGS-"-KPIC -O"}
324 CFLAGS=${CFLAGS-"-O"}
325 LDSHARED=${LDSHARED-"cc -G"} ;;
326 AIX*) # Courtesy of dbakker@arrayasolutions.com
327 SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
328 CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
329 LDSHARED=${LDSHARED-"xlc -G"} ;;
330 # send working options for other systems to zlib@gzip.org
331 *) SFLAGS=${CFLAGS-"-O"}
332 CFLAGS=${CFLAGS-"-O"}
333 LDSHARED=${LDSHARED-"cc -shared"} ;;
337 # destination names for shared library if not defined above
338 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
339 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
340 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
342 echo >> configure.log
344 # define functions for testing compiler and library characteristics and logging the results
349 if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
353 test "`( $* ) 2>&1 | tee -a configure.log`" = ""
355 echo - using any output from compiler to indicate an error >> configure.log
360 ( $* ) >> configure.log 2>&1
362 if test $ret -ne 0; then
363 echo "(exit code "$ret")" >> configure.log
374 printf %s "$got" >> configure.log
375 if test $ret -ne 0; then
382 int foo() { return 0; }
384 echo "Checking for obsessive-compulsive compiler options..." >> configure.log
385 if try $CC -c $CFLAGS $test.c; then
388 echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
392 echo >> configure.log
394 # see if shared library build supported
396 extern int getchar();
397 int hello() {return getchar();}
399 if test $shared -eq 1; then
400 echo Checking for shared library support... | tee -a configure.log
401 # we must test in two steps (cc then ld), required at least on SunOS 4.x
402 if try $CC -w -c $SFLAGS $test.c &&
403 try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
404 echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
405 elif test -z "$old_cc" -a -z "$old_cflags"; then
406 echo No shared library support. | tee -a configure.log
409 echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
413 if test $shared -eq 0; then
416 TEST="all teststatic"
420 echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
423 TEST="all teststatic testshared"
426 # check for underscores in external names for use by assembler code
430 echo >> configure.log
431 show "$NM $test.o | grep _hello"
432 if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
433 CPP="$CPP -DNO_UNDERLINE"
434 echo Checking for underline in external names... No. | tee -a configure.log
436 echo Checking for underline in external names... Yes. | tee -a configure.log
440 echo >> configure.log
442 # check for large file support, and if none, check for fseeko()
444 #include <sys/types.h>
447 if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
448 CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
449 SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
451 TEST="${TEST} test64"
452 echo "Checking for off64_t... Yes." | tee -a configure.log
453 echo "Checking for fseeko... Yes." | tee -a configure.log
455 echo "Checking for off64_t... No." | tee -a configure.log
456 echo >> configure.log
464 if try $CC $CFLAGS -o $test $test.c; then
465 echo "Checking for fseeko... Yes." | tee -a configure.log
467 CFLAGS="${CFLAGS} -DNO_FSEEKO"
468 SFLAGS="${SFLAGS} -DNO_FSEEKO"
469 echo "Checking for fseeko... No." | tee -a configure.log
473 echo >> configure.log
475 # check for strerror() for use by gz* functions
479 int main() { return strlen(strerror(errno)); }
481 if try $CC $CFLAGS -o $test $test.c; then
482 echo "Checking for strerror... Yes." | tee -a configure.log
484 CFLAGS="${CFLAGS} -DNO_STRERROR"
485 SFLAGS="${SFLAGS} -DNO_STRERROR"
486 echo "Checking for strerror... No." | tee -a configure.log
489 # copy clean zconf.h for subsequent edits
490 cp -p ${SRCDIR}zconf.h.in zconf.h
492 echo >> configure.log
494 # check for unistd.h and save result in zconf.h
497 int main() { return 0; }
499 if try $CC -c $CFLAGS $test.c; then
500 sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
501 mv zconf.temp.h zconf.h
502 echo "Checking for unistd.h... Yes." | tee -a configure.log
504 echo "Checking for unistd.h... No." | tee -a configure.log
507 echo >> configure.log
509 # check for stdarg.h and save result in zconf.h
512 int main() { return 0; }
514 if try $CC -c $CFLAGS $test.c; then
515 sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
516 mv zconf.temp.h zconf.h
517 echo "Checking for stdarg.h... Yes." | tee -a configure.log
519 echo "Checking for stdarg.h... No." | tee -a configure.log
522 # if the z_ prefix was requested, save that in zconf.h
523 if test $zprefix -eq 1; then
524 sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
525 mv zconf.temp.h zconf.h
526 echo >> configure.log
527 echo "Using z_ prefix on all symbols." | tee -a configure.log
530 # if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
531 if test $solo -eq 1; then
532 sed '/#define ZCONF_H/a\
535 ' < zconf.h > zconf.temp.h
536 mv zconf.temp.h zconf.h
538 PIC_OBJC='$(PIC_OBJZ)'
541 # if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
542 if test $cover -eq 1; then
543 CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
544 if test -n "$GCC_CLASSIC"; then
549 echo >> configure.log
551 # conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
552 # (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
553 # return value. The most secure result is vsnprintf() with a return value. snprintf() with a
554 # return value is secure as well, but then gzprintf() will be limited to 20 arguments.
567 if try $CC -c $CFLAGS $test.c; then
568 echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
570 echo >> configure.log
574 int mytest(const char *fmt, ...)
579 vsnprintf(buf, sizeof(buf), fmt, ap);
585 return (mytest("Hello%d\n", 1));
588 if try $CC $CFLAGS -o $test $test.c; then
589 echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
591 echo >> configure.log
595 int mytest(const char *fmt, ...)
601 n = vsnprintf(buf, sizeof(buf), fmt, ap);
607 return (mytest("Hello%d\n", 1));
611 if try $CC -c $CFLAGS $test.c; then
612 echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
614 CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
615 SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
616 echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
617 echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
618 echo " can build but will be open to possible string-format security" | tee -a configure.log
619 echo " vulnerabilities." | tee -a configure.log
622 CFLAGS="$CFLAGS -DNO_vsnprintf"
623 SFLAGS="$SFLAGS -DNO_vsnprintf"
624 echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
625 echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
626 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
627 echo " vulnerabilities." | tee -a configure.log
629 echo >> configure.log
633 int mytest(const char *fmt, ...)
639 n = vsprintf(buf, fmt, ap);
645 return (mytest("Hello%d\n", 1));
649 if try $CC -c $CFLAGS $test.c; then
650 echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
652 CFLAGS="$CFLAGS -DHAS_vsprintf_void"
653 SFLAGS="$SFLAGS -DHAS_vsprintf_void"
654 echo "Checking for return value of vsprintf()... No." | tee -a configure.log
655 echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
656 echo " can build but will be open to possible string-format security" | tee -a configure.log
657 echo " vulnerabilities." | tee -a configure.log
661 echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
663 echo >> configure.log
669 snprintf(buf, sizeof(buf), "%s", "foo");
678 if try $CC $CFLAGS -o $test $test.c; then
679 echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
681 echo >> configure.log
687 return snprintf(buf, sizeof(buf), "%s", "foo");
695 if try $CC -c $CFLAGS $test.c; then
696 echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
698 CFLAGS="$CFLAGS -DHAS_snprintf_void"
699 SFLAGS="$SFLAGS -DHAS_snprintf_void"
700 echo "Checking for return value of snprintf()... No." | tee -a configure.log
701 echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
702 echo " can build but will be open to possible string-format security" | tee -a configure.log
703 echo " vulnerabilities." | tee -a configure.log
706 CFLAGS="$CFLAGS -DNO_snprintf"
707 SFLAGS="$SFLAGS -DNO_snprintf"
708 echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
709 echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
710 echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
711 echo " vulnerabilities." | tee -a configure.log
713 echo >> configure.log
719 return sprintf(buf, "%s", "foo");
727 if try $CC -c $CFLAGS $test.c; then
728 echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
730 CFLAGS="$CFLAGS -DHAS_sprintf_void"
731 SFLAGS="$SFLAGS -DHAS_sprintf_void"
732 echo "Checking for return value of sprintf()... No." | tee -a configure.log
733 echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
734 echo " can build but will be open to possible string-format security" | tee -a configure.log
735 echo " vulnerabilities." | tee -a configure.log
740 # see if we can hide zlib internal symbols that are linked between separate source files
741 if test "$gcc" -eq 1; then
742 echo >> configure.log
744 #define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
745 int ZLIB_INTERNAL foo;
751 if tryboth $CC -c $CFLAGS $test.c; then
752 CFLAGS="$CFLAGS -DHAVE_HIDDEN"
753 SFLAGS="$SFLAGS -DHAVE_HIDDEN"
754 echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
756 echo "Checking for attribute(visibility) support... No." | tee -a configure.log
760 # show the results in the log
761 echo >> configure.log
762 echo ALL = $ALL >> configure.log
763 echo AR = $AR >> configure.log
764 echo ARFLAGS = $ARFLAGS >> configure.log
765 echo CC = $CC >> configure.log
766 echo CFLAGS = $CFLAGS >> configure.log
767 echo CPP = $CPP >> configure.log
768 echo EXE = $EXE >> configure.log
769 echo LDCONFIG = $LDCONFIG >> configure.log
770 echo LDFLAGS = $LDFLAGS >> configure.log
771 echo LDSHARED = $LDSHARED >> configure.log
772 echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
773 echo OBJC = $OBJC >> configure.log
774 echo PIC_OBJC = $PIC_OBJC >> configure.log
775 echo RANLIB = $RANLIB >> configure.log
776 echo SFLAGS = $SFLAGS >> configure.log
777 echo SHAREDLIB = $SHAREDLIB >> configure.log
778 echo SHAREDLIBM = $SHAREDLIBM >> configure.log
779 echo SHAREDLIBV = $SHAREDLIBV >> configure.log
780 echo STATICLIB = $STATICLIB >> configure.log
781 echo TEST = $TEST >> configure.log
782 echo VER = $VER >> configure.log
783 echo Z_U4 = $Z_U4 >> configure.log
784 echo SRCDIR = $SRCDIR >> configure.log
785 echo exec_prefix = $exec_prefix >> configure.log
786 echo includedir = $includedir >> configure.log
787 echo libdir = $libdir >> configure.log
788 echo mandir = $mandir >> configure.log
789 echo prefix = $prefix >> configure.log
790 echo sharedlibdir = $sharedlibdir >> configure.log
791 echo uname = $uname >> configure.log
793 # udpate Makefile with the configure results
794 sed < ${SRCDIR}Makefile.in "
796 /^CFLAGS *=/s#=.*#=$CFLAGS#
797 /^SFLAGS *=/s#=.*#=$SFLAGS#
798 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
799 /^LDSHARED *=/s#=.*#=$LDSHARED#
800 /^CPP *=/s#=.*#=$CPP#
801 /^STATICLIB *=/s#=.*#=$STATICLIB#
802 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
803 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
804 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
806 /^ARFLAGS *=/s#=.*#=$ARFLAGS#
807 /^RANLIB *=/s#=.*#=$RANLIB#
808 /^LDCONFIG *=/s#=.*#=$LDCONFIG#
809 /^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
810 /^EXE *=/s#=.*#=$EXE#
811 /^SRCDIR *=/s#=.*#=$SRCDIR#
812 /^ZINC *=/s#=.*#=$ZINC#
813 /^ZINCOUT *=/s#=.*#=$ZINCOUT#
814 /^prefix *=/s#=.*#=$prefix#
815 /^exec_prefix *=/s#=.*#=$exec_prefix#
816 /^libdir *=/s#=.*#=$libdir#
817 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
818 /^includedir *=/s#=.*#=$includedir#
819 /^mandir *=/s#=.*#=$mandir#
820 /^OBJC *=/s#=.*#= $OBJC#
821 /^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
822 /^all: */s#:.*#: $ALL#
823 /^test: */s#:.*#: $TEST#
826 # create zlib.pc with the configure results
827 sed < ${SRCDIR}zlib.pc.in "
829 /^CFLAGS *=/s#=.*#=$CFLAGS#
830 /^CPP *=/s#=.*#=$CPP#
831 /^LDSHARED *=/s#=.*#=$LDSHARED#
832 /^STATICLIB *=/s#=.*#=$STATICLIB#
833 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
834 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
835 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
837 /^ARFLAGS *=/s#=.*#=$ARFLAGS#
838 /^RANLIB *=/s#=.*#=$RANLIB#
839 /^EXE *=/s#=.*#=$EXE#
840 /^prefix *=/s#=.*#=$prefix#
841 /^exec_prefix *=/s#=.*#=$exec_prefix#
842 /^libdir *=/s#=.*#=$libdir#
843 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
844 /^includedir *=/s#=.*#=$includedir#
845 /^mandir *=/s#=.*#=$mandir#
846 /^LDFLAGS *=/s#=.*#=$LDFLAGS#
848 s/\@VERSION\@/$VER/g;