configure@ 103050

最後變更在這個檔案從103050是 97832,由 vboxsync 提交於 2 年前
zlib-1.2.13: adding svn:sync-process property to all zlib files (except LICESNSE and zlib.3.pdf). bugref:10335
屬性 svn:eol-style 設為 `native`
檔案大小: 27.3 KB

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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 $SRCDIR = "."; then
24	ZINC=""
25	ZINCOUT="-I."
26	SRCDIR=""
27	else
28	ZINC='-include zconf.h'
29	ZINCOUT='-I. -I$(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' < ${SRCDIR}zlib.h`
47	VER3=`sed -n -e '/VERSION "/s/."$[0-9]\\.[0-9]\\.[0-9]$.*/\1/p' < ${SRCDIR}zlib.h`
48	VER2=`sed -n -e '/VERSION "/s/."$[0-9]\\.[0-9]$\\../\1/p' < ${SRCDIR}zlib.h`
49	VER1=`sed -n -e '/VERSION "/s/."$[0-9]$\\..*/\1/p' < ${SRCDIR}zlib.h`
50
51	# establish commands for library building
52	if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null \|\| test $? -lt 126; then
53	AR=${AR-"${CROSS_PREFIX}ar"}
54	test -n "${CROSS_PREFIX}" && echo Using ${AR} \| tee -a configure.log
55	else
56	AR=${AR-"ar"}
57	test -n "${CROSS_PREFIX}" && echo Using ${AR} \| tee -a configure.log
58	fi
59	ARFLAGS=${ARFLAGS-"rc"}
60	if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null \|\| test $? -lt 126; then
61	RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
62	test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} \| tee -a configure.log
63	else
64	RANLIB=${RANLIB-"ranlib"}
65	fi
66	if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null \|\| test $? -lt 126; then
67	NM=${NM-"${CROSS_PREFIX}nm"}
68	test -n "${CROSS_PREFIX}" && echo Using ${NM} \| tee -a configure.log
69	else
70	NM=${NM-"nm"}
71	fi
72
73	# set defaults before processing command line options
74	LDCONFIG=${LDCONFIG-"ldconfig"}
75	LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
76	ARCHS=
77	prefix=${prefix-/usr/local}
78	exec_prefix=${exec_prefix-'${prefix}'}
79	libdir=${libdir-'${exec_prefix}/lib'}
80	sharedlibdir=${sharedlibdir-'${libdir}'}
81	includedir=${includedir-'${prefix}/include'}
82	mandir=${mandir-'${prefix}/share/man'}
83	shared_ext='.so'
84	shared=1
85	solo=0
86	cover=0
87	zprefix=0
88	zconst=0
89	build64=0
90	gcc=0
91	warn=0
92	debug=0
93	sanitize=0
94	old_cc="$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 -f $test.[co] $test $test$shared_ext $test.gcno ./--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) sanitize=1; shift ;;
145	*)
146	echo "unknown option: $1" \| tee -a configure.log
147	echo "$0 --help for help" \| tee -a configure.log
148	leave 1;;
149	esac
150	done
151
152	# temporary file name
153	test=ztest$$
154
155	# put arguments in log, also put test file in log if used in arguments
156	show()
157	{
158	case "$*" in
159	$test.c)
160	echo === $test.c === >> configure.log
161	cat $test.c >> configure.log
162	echo === >> configure.log;;
163	esac
164	echo $* >> configure.log
165	}
166
167	# check for gcc vs. cc and set compile and link flags based on the system identified by uname
168	cat > $test.c <<EOF
169	extern int getchar();
170	int hello() {return getchar();}
171	EOF
172
173	if test -z "$CC"; then
174	echo Checking for ${CROSS_PREFIX}gcc... \| tee -a configure.log
175	if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then
176	cc=${CROSS_PREFIX}gcc
177	else
178	cc=${CROSS_PREFIX}cc
179	fi
180	else
181	cc=${CC}
182	fi
183
184	case "$cc" in
185	gcc) gcc=1 ;;
186	clang) gcc=1 ;;
187	esac
188	case `$cc -v 2>&1` in
189	gcc) gcc=1 ;;
190	clang) gcc=1 ;;
191	esac
192
193	show $cc -c $test.c
194	if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
195	echo ... using gcc >> configure.log
196	CC="$cc"
197	CFLAGS="${CFLAGS--O3}"
198	SFLAGS="${CFLAGS--O3} -fPIC"
199	if test "$ARCHS"; then
200	CFLAGS="${CFLAGS} ${ARCHS}"
201	LDFLAGS="${LDFLAGS} ${ARCHS}"
202	fi
203	if test $build64 -eq 1; then
204	CFLAGS="${CFLAGS} -m64"
205	SFLAGS="${SFLAGS} -m64"
206	fi
207	if test "$warn" -eq 1; then
208	if test "$zconst" -eq 1; then
209	CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST"
210	else
211	CFLAGS="${CFLAGS} -Wall -Wextra"
212	fi
213	fi
214	if test $sanitize -eq 1; then
215	CFLAGS="${CFLAGS} -g -fsanitize=address"
216	fi
217	if test $debug -eq 1; then
218	CFLAGS="${CFLAGS} -DZLIB_DEBUG"
219	SFLAGS="${SFLAGS} -DZLIB_DEBUG"
220	fi
221	if test -z "$uname"; then
222	uname=`(uname -s \|\| echo unknown) 2>/dev/null`
223	fi
224	case "$uname" in
225	Linux* \| linux* \| -linux \| GNU \| GNU/* \| solaris*)
226	case "$mname" in
227	sparc)
228	LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;;
229	esac
230	LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
231	BSD \| bsd* \| DragonFly)
232	LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
233	LDCONFIG="ldconfig -m" ;;
234	CYGWIN* \| Cygwin* \| cygwin* \| -cygwin \| OS/2*)
235	EXE='.exe' ;;
236	MINGW* \| mingw* \| -mingw)
237	rm -f $test.[co] $test $test$shared_ext
238	echo "If this doesn't work for you, try win32/Makefile.gcc." \| tee -a configure.log
239	LDSHARED=${LDSHARED-"$cc -shared"}
240	LDSHAREDLIBC=""
241	EXE='.exe' ;;
242	QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
243	# ([email protected])
244	LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
245	HP-UX*)
246	LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
247	case `(uname -m \|\| echo unknown) 2>/dev/null` in
248	ia64)
249	shared_ext='.so'
250	SHAREDLIB='libz.so' ;;
251	*)
252	shared_ext='.sl'
253	SHAREDLIB='libz.sl' ;;
254	esac ;;
255	AIX*)
256	LDFLAGS="${LDFLAGS} -Wl,-brtl" ;;
257	Darwin* \| darwin* \| -darwin)
258	shared_ext='.dylib'
259	SHAREDLIB=libz$shared_ext
260	SHAREDLIBV=libz.$VER$shared_ext
261	SHAREDLIBM=libz.$VER1$shared_ext
262	LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
263	if libtool -V 2>&1 \| grep Apple > /dev/null; then
264	AR="libtool"
265	else
266	AR="/usr/bin/libtool"
267	fi
268	ARFLAGS="-o" ;;
269	*)
270	LDSHARED=${LDSHARED-"$cc -shared"} ;;
271	esac
272	else
273	# find system name and corresponding cc options
274	CC=${CC-cc}
275	gcc=0
276	echo ... using $CC >> configure.log
277	if test -z "$uname"; then
278	uname=`(uname -sr \|\| echo unknown) 2>/dev/null`
279	fi
280	case "$uname" in
281	HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
282	CFLAGS=${CFLAGS-"-O"}
283	# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
284	LDSHARED=${LDSHARED-"ld -b"}
285	case `(uname -m \|\| echo unknown) 2>/dev/null` in
286	ia64)
287	shared_ext='.so'
288	SHAREDLIB='libz.so' ;;
289	*)
290	shared_ext='.sl'
291	SHAREDLIB='libz.sl' ;;
292	esac ;;
293	IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
294	CFLAGS=${CFLAGS-"-ansi -O2"}
295	LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
296	OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
297	CFLAGS=${CFLAGS-"-O -std1"}
298	LDFLAGS="${LDFLAGS} -Wl,-rpath,."
299	LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
300	OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
301	CFLAGS=${CFLAGS-"-O -std1"}
302	LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
303	QNX*) SFLAGS=${CFLAGS-"-4 -O"}
304	CFLAGS=${CFLAGS-"-4 -O"}
305	LDSHARED=${LDSHARED-"cc"}
306	RANLIB=${RANLIB-"true"}
307	AR="cc"
308	ARFLAGS="-A" ;;
309	SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
310	CFLAGS=${CFLAGS-"-O3"}
311	LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
312	SunOS\ 5* \| solaris*)
313	LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
314	SFLAGS=${CFLAGS-"-fast -KPIC"}
315	CFLAGS=${CFLAGS-"-fast"}
316	if test $build64 -eq 1; then
317	# old versions of SunPRO/Workshop/Studio don't support -m64,
318	# but newer ones do. Check for it.
319	flag64=`$CC -flags \| egrep -- '^-m64'`
320	if test x"$flag64" != x"" ; then
321	CFLAGS="${CFLAGS} -m64"
322	SFLAGS="${SFLAGS} -m64"
323	else
324	case `(uname -m \|\| echo unknown) 2>/dev/null` in
325	i86*)
326	SFLAGS="$SFLAGS -xarch=amd64"
327	CFLAGS="$CFLAGS -xarch=amd64" ;;
328	*)
329	SFLAGS="$SFLAGS -xarch=v9"
330	CFLAGS="$CFLAGS -xarch=v9" ;;
331	esac
332	fi
333	fi
334	if test -n "$ZINC"; then
335	ZINC='-I- -I. -I$(SRCDIR)'
336	fi
337	;;
338	SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
339	CFLAGS=${CFLAGS-"-O2"}
340	LDSHARED=${LDSHARED-"ld"} ;;
341	SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
342	CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
343	LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
344	UNIX_System_V\ 4.2.0)
345	SFLAGS=${CFLAGS-"-KPIC -O"}
346	CFLAGS=${CFLAGS-"-O"}
347	LDSHARED=${LDSHARED-"cc -G"} ;;
348	UNIX_SV\ 4.2MP)
349	SFLAGS=${CFLAGS-"-Kconform_pic -O"}
350	CFLAGS=${CFLAGS-"-O"}
351	LDSHARED=${LDSHARED-"cc -G"} ;;
352	OpenUNIX\ 5)
353	SFLAGS=${CFLAGS-"-KPIC -O"}
354	CFLAGS=${CFLAGS-"-O"}
355	LDSHARED=${LDSHARED-"cc -G"} ;;
356	AIX*) # Courtesy of [email protected]
357	SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
358	CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
359	LDSHARED=${LDSHARED-"xlc -G"} ;;
360	# send working options for other systems to [email protected]
361	*) SFLAGS=${CFLAGS-"-O"}
362	CFLAGS=${CFLAGS-"-O"}
363	LDSHARED=${LDSHARED-"cc -shared"} ;;
364	esac
365	fi
366
367	# destination names for shared library if not defined above
368	SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
369	SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
370	SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
371
372	echo >> configure.log
373
374	# define functions for testing compiler and library characteristics and logging the results
375
376	cat > $test.c <<EOF
377	#error error
378	EOF
379	if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
380	try()
381	{
382	show $*
383	test "`( $* ) 2>&1 \| tee -a configure.log`" = ""
384	}
385	echo - using any output from compiler to indicate an error >> configure.log
386	else
387	try()
388	{
389	show $*
390	got=`( $* ) 2>&1`
391	ret=$?
392	if test "$got" != ""; then
393	printf "%s\n" "$got" >> configure.log
394	fi
395	if test $ret -ne 0; then
396	echo "(exit code "$ret")" >> configure.log
397	fi
398	return $ret
399	}
400	fi
401
402	tryboth()
403	{
404	show $*
405	got=`( $* ) 2>&1`
406	ret=$?
407	if test "$got" != ""; then
408	printf "%s\n" "$got" >> configure.log
409	fi
410	if test $ret -ne 0; then
411	echo "(exit code "$ret")" >> configure.log
412	return $ret
413	fi
414	test "$got" = ""
415	}
416
417	cat > $test.c << EOF
418	int foo() { return 0; }
419	EOF
420	echo "Checking for obsessive-compulsive compiler options..." >> configure.log
421	if try $CC -c $CFLAGS $test.c; then
422	:
423	else
424	echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." \| tee -a configure.log
425	leave 1
426	fi
427
428	echo >> configure.log
429
430	# see if shared library build supported
431	cat > $test.c <<EOF
432	extern int getchar();
433	int hello() {return getchar();}
434	EOF
435	if test $shared -eq 1; then
436	echo Checking for shared library support... \| tee -a configure.log
437	# we must test in two steps (cc then ld), required at least on SunOS 4.x
438	if try $CC -w -c $SFLAGS $test.c &&
439	try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
440	echo Building shared library $SHAREDLIBV with $CC. \| tee -a configure.log
441	elif test -z "$old_cc" -a -z "$old_cflags"; then
442	echo No shared library support. \| tee -a configure.log
443	shared=0;
444	else
445	echo 'No shared library support; try without defining CC and CFLAGS' \| tee -a configure.log
446	shared=0;
447	fi
448	fi
449	if test $shared -eq 0; then
450	LDSHARED="$CC"
451	ALL="static"
452	TEST="all teststatic"
453	SHAREDLIB=""
454	SHAREDLIBV=""
455	SHAREDLIBM=""
456	echo Building static library $STATICLIB version $VER with $CC. \| tee -a configure.log
457	else
458	ALL="static shared"
459	TEST="all teststatic testshared"
460	fi
461
462	echo >> configure.log
463
464	# check for size_t
465	cat > $test.c <<EOF
466	#include <stdio.h>
467	#include <stdlib.h>
468	size_t dummy = 0;
469	EOF
470	if try $CC -c $CFLAGS $test.c; then
471	echo "Checking for size_t... Yes." \| tee -a configure.log
472	else
473	echo "Checking for size_t... No." \| tee -a configure.log
474	# find a size_t integer type
475	# check for long long
476	cat > $test.c << EOF
477	long long dummy = 0;
478	EOF
479	if try $CC -c $CFLAGS $test.c; then
480	echo "Checking for long long... Yes." \| tee -a configure.log
481	cat > $test.c <<EOF
482	#include <stdio.h>
483	int main(void) {
484	if (sizeof(void *) <= sizeof(int)) puts("int");
485	else if (sizeof(void *) <= sizeof(long)) puts("long");
486	else puts("z_longlong");
487	return 0;
488	}
489	EOF
490	else
491	echo "Checking for long long... No." \| tee -a configure.log
492	cat > $test.c <<EOF
493	#include <stdio.h>
494	int main(void) {
495	if (sizeof(void *) <= sizeof(int)) puts("int");
496	else puts("long");
497	return 0;
498	}
499	EOF
500	fi
501	if try $CC $CFLAGS -o $test $test.c; then
502	sizet=`./$test`
503	echo "Checking for a pointer-size integer type..." $sizet"." \| tee -a configure.log
504	CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
505	SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
506	else
507	echo "Checking for a pointer-size integer type... not found." \| tee -a configure.log
508	fi
509	fi
510
511	echo >> configure.log
512
513	# check for large file support, and if none, check for fseeko()
514	cat > $test.c <<EOF
515	#include <sys/types.h>
516	off64_t dummy = 0;
517	EOF
518	if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
519	CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
520	SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
521	ALL="${ALL} all64"
522	TEST="${TEST} test64"
523	echo "Checking for off64_t... Yes." \| tee -a configure.log
524	echo "Checking for fseeko... Yes." \| tee -a configure.log
525	else
526	echo "Checking for off64_t... No." \| tee -a configure.log
527	echo >> configure.log
528	cat > $test.c <<EOF
529	#include <stdio.h>
530	int main(void) {
531	fseeko(NULL, 0, 0);
532	return 0;
533	}
534	EOF
535	if try $CC $CFLAGS -o $test $test.c; then
536	echo "Checking for fseeko... Yes." \| tee -a configure.log
537	else
538	CFLAGS="${CFLAGS} -DNO_FSEEKO"
539	SFLAGS="${SFLAGS} -DNO_FSEEKO"
540	echo "Checking for fseeko... No." \| tee -a configure.log
541	fi
542	fi
543
544	echo >> configure.log
545
546	# check for strerror() for use by gz* functions
547	cat > $test.c <<EOF
548	#include <string.h>
549	#include <errno.h>
550	int main() { return strlen(strerror(errno)); }
551	EOF
552	if try $CC $CFLAGS -o $test $test.c; then
553	echo "Checking for strerror... Yes." \| tee -a configure.log
554	else
555	CFLAGS="${CFLAGS} -DNO_STRERROR"
556	SFLAGS="${SFLAGS} -DNO_STRERROR"
557	echo "Checking for strerror... No." \| tee -a configure.log
558	fi
559
560	# copy clean zconf.h for subsequent edits
561	cp -p ${SRCDIR}zconf.h.in zconf.h
562
563	echo >> configure.log
564
565	# check for unistd.h and save result in zconf.h
566	cat > $test.c <<EOF
567	#include <unistd.h>
568	int main() { return 0; }
569	EOF
570	if try $CC -c $CFLAGS $test.c; then
571	sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H$.*$ may be/ 1\1 was/" > zconf.temp.h
572	mv zconf.temp.h zconf.h
573	echo "Checking for unistd.h... Yes." \| tee -a configure.log
574	else
575	echo "Checking for unistd.h... No." \| tee -a configure.log
576	fi
577
578	echo >> configure.log
579
580	# check for stdarg.h and save result in zconf.h
581	cat > $test.c <<EOF
582	#include <stdarg.h>
583	int main() { return 0; }
584	EOF
585	if try $CC -c $CFLAGS $test.c; then
586	sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H$.*$ may be/ 1\1 was/" > zconf.temp.h
587	mv zconf.temp.h zconf.h
588	echo "Checking for stdarg.h... Yes." \| tee -a configure.log
589	else
590	echo "Checking for stdarg.h... No." \| tee -a configure.log
591	fi
592
593	# if the z_ prefix was requested, save that in zconf.h
594	if test $zprefix -eq 1; then
595	sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX$.*$ may be/ 1\1 was/" > zconf.temp.h
596	mv zconf.temp.h zconf.h
597	echo >> configure.log
598	echo "Using z_ prefix on all symbols." \| tee -a configure.log
599	fi
600
601	# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
602	if test $solo -eq 1; then
603	sed '/#define ZCONF_H/a\
604	#define Z_SOLO
605
606	' < zconf.h > zconf.temp.h
607	mv zconf.temp.h zconf.h
608	OBJC='$(OBJZ)'
609	PIC_OBJC='$(PIC_OBJZ)'
610	fi
611
612	# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
613	if test $cover -eq 1; then
614	CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
615	if test -n "$GCC_CLASSIC"; then
616	CC=$GCC_CLASSIC
617	fi
618	fi
619
620	echo >> configure.log
621
622	# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
623	# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
624	# return value. The most secure result is vsnprintf() with a return value. snprintf() with a
625	# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
626	cat > $test.c <<EOF
627	#include <stdio.h>
628	#include <stdarg.h>
629	#include "zconf.h"
630	int main()
631	{
632	#ifndef STDC
633	choke me
634	#endif
635	return 0;
636	}
637	EOF
638	if try $CC -c $CFLAGS $test.c; then
639	echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." \| tee -a configure.log
640
641	echo >> configure.log
642	cat > $test.c <<EOF
643	#include <stdio.h>
644	#include <stdarg.h>
645	int mytest(const char *fmt, ...)
646	{
647	char buf[20];
648	va_list ap;
649	va_start(ap, fmt);
650	vsnprintf(buf, sizeof(buf), fmt, ap);
651	va_end(ap);
652	return 0;
653	}
654	int main()
655	{
656	return (mytest("Hello%d\n", 1));
657	}
658	EOF
659	if try $CC $CFLAGS -o $test $test.c; then
660	echo "Checking for vsnprintf() in stdio.h... Yes." \| tee -a configure.log
661
662	echo >> configure.log
663	cat >$test.c <<EOF
664	#include <stdio.h>
665	#include <stdarg.h>
666	int mytest(const char *fmt, ...)
667	{
668	int n;
669	char buf[20];
670	va_list ap;
671	va_start(ap, fmt);
672	n = vsnprintf(buf, sizeof(buf), fmt, ap);
673	va_end(ap);
674	return n;
675	}
676	int main()
677	{
678	return (mytest("Hello%d\n", 1));
679	}
680	EOF
681
682	if try $CC -c $CFLAGS $test.c; then
683	echo "Checking for return value of vsnprintf()... Yes." \| tee -a configure.log
684	else
685	CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
686	SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
687	echo "Checking for return value of vsnprintf()... No." \| tee -a configure.log
688	echo " WARNING: apparently vsnprintf() does not return a value. zlib" \| tee -a configure.log
689	echo " can build but will be open to possible string-format security" \| tee -a configure.log
690	echo " vulnerabilities." \| tee -a configure.log
691	fi
692	else
693	CFLAGS="$CFLAGS -DNO_vsnprintf"
694	SFLAGS="$SFLAGS -DNO_vsnprintf"
695	echo "Checking for vsnprintf() in stdio.h... No." \| tee -a configure.log
696	echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" \| tee -a configure.log
697	echo " can build but will be open to possible buffer-overflow security" \| tee -a configure.log
698	echo " vulnerabilities." \| tee -a configure.log
699
700	echo >> configure.log
701	cat >$test.c <<EOF
702	#include <stdio.h>
703	#include <stdarg.h>
704	int mytest(const char *fmt, ...)
705	{
706	int n;
707	char buf[20];
708	va_list ap;
709	va_start(ap, fmt);
710	n = vsprintf(buf, fmt, ap);
711	va_end(ap);
712	return n;
713	}
714	int main()
715	{
716	return (mytest("Hello%d\n", 1));
717	}
718	EOF
719
720	if try $CC -c $CFLAGS $test.c; then
721	echo "Checking for return value of vsprintf()... Yes." \| tee -a configure.log
722	else
723	CFLAGS="$CFLAGS -DHAS_vsprintf_void"
724	SFLAGS="$SFLAGS -DHAS_vsprintf_void"
725	echo "Checking for return value of vsprintf()... No." \| tee -a configure.log
726	echo " WARNING: apparently vsprintf() does not return a value. zlib" \| tee -a configure.log
727	echo " can build but will be open to possible string-format security" \| tee -a configure.log
728	echo " vulnerabilities." \| tee -a configure.log
729	fi
730	fi
731	else
732	echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." \| tee -a configure.log
733
734	echo >> configure.log
735	cat >$test.c <<EOF
736	#include <stdio.h>
737	int mytest()
738	{
739	char buf[20];
740	snprintf(buf, sizeof(buf), "%s", "foo");
741	return 0;
742	}
743	int main()
744	{
745	return (mytest());
746	}
747	EOF
748
749	if try $CC $CFLAGS -o $test $test.c; then
750	echo "Checking for snprintf() in stdio.h... Yes." \| tee -a configure.log
751
752	echo >> configure.log
753	cat >$test.c <<EOF
754	#include <stdio.h>
755	int mytest()
756	{
757	char buf[20];
758	return snprintf(buf, sizeof(buf), "%s", "foo");
759	}
760	int main()
761	{
762	return (mytest());
763	}
764	EOF
765
766	if try $CC -c $CFLAGS $test.c; then
767	echo "Checking for return value of snprintf()... Yes." \| tee -a configure.log
768	else
769	CFLAGS="$CFLAGS -DHAS_snprintf_void"
770	SFLAGS="$SFLAGS -DHAS_snprintf_void"
771	echo "Checking for return value of snprintf()... No." \| tee -a configure.log
772	echo " WARNING: apparently snprintf() does not return a value. zlib" \| tee -a configure.log
773	echo " can build but will be open to possible string-format security" \| tee -a configure.log
774	echo " vulnerabilities." \| tee -a configure.log
775	fi
776	else
777	CFLAGS="$CFLAGS -DNO_snprintf"
778	SFLAGS="$SFLAGS -DNO_snprintf"
779	echo "Checking for snprintf() in stdio.h... No." \| tee -a configure.log
780	echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" \| tee -a configure.log
781	echo " can build but will be open to possible buffer-overflow security" \| tee -a configure.log
782	echo " vulnerabilities." \| tee -a configure.log
783
784	echo >> configure.log
785	cat >$test.c <<EOF
786	#include <stdio.h>
787	int mytest()
788	{
789	char buf[20];
790	return sprintf(buf, "%s", "foo");
791	}
792	int main()
793	{
794	return (mytest());
795	}
796	EOF
797
798	if try $CC -c $CFLAGS $test.c; then
799	echo "Checking for return value of sprintf()... Yes." \| tee -a configure.log
800	else
801	CFLAGS="$CFLAGS -DHAS_sprintf_void"
802	SFLAGS="$SFLAGS -DHAS_sprintf_void"
803	echo "Checking for return value of sprintf()... No." \| tee -a configure.log
804	echo " WARNING: apparently sprintf() does not return a value. zlib" \| tee -a configure.log
805	echo " can build but will be open to possible string-format security" \| tee -a configure.log
806	echo " vulnerabilities." \| tee -a configure.log
807	fi
808	fi
809	fi
810
811	# see if we can hide zlib internal symbols that are linked between separate source files
812	if test "$gcc" -eq 1; then
813	echo >> configure.log
814	cat > $test.c <<EOF
815	#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
816	int ZLIB_INTERNAL foo;
817	int main()
818	{
819	return 0;
820	}
821	EOF
822	if tryboth $CC -c $CFLAGS $test.c; then
823	CFLAGS="$CFLAGS -DHAVE_HIDDEN"
824	SFLAGS="$SFLAGS -DHAVE_HIDDEN"
825	echo "Checking for attribute(visibility) support... Yes." \| tee -a configure.log
826	else
827	echo "Checking for attribute(visibility) support... No." \| tee -a configure.log
828	fi
829	fi
830
831	# show the results in the log
832	echo >> configure.log
833	echo ALL = $ALL >> configure.log
834	echo AR = $AR >> configure.log
835	echo ARFLAGS = $ARFLAGS >> configure.log
836	echo CC = $CC >> configure.log
837	echo CFLAGS = $CFLAGS >> configure.log
838	echo CPP = $CPP >> configure.log
839	echo EXE = $EXE >> configure.log
840	echo LDCONFIG = $LDCONFIG >> configure.log
841	echo LDFLAGS = $LDFLAGS >> configure.log
842	echo LDSHARED = $LDSHARED >> configure.log
843	echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
844	echo OBJC = $OBJC >> configure.log
845	echo PIC_OBJC = $PIC_OBJC >> configure.log
846	echo RANLIB = $RANLIB >> configure.log
847	echo SFLAGS = $SFLAGS >> configure.log
848	echo SHAREDLIB = $SHAREDLIB >> configure.log
849	echo SHAREDLIBM = $SHAREDLIBM >> configure.log
850	echo SHAREDLIBV = $SHAREDLIBV >> configure.log
851	echo STATICLIB = $STATICLIB >> configure.log
852	echo TEST = $TEST >> configure.log
853	echo VER = $VER >> configure.log
854	echo SRCDIR = $SRCDIR >> configure.log
855	echo exec_prefix = $exec_prefix >> configure.log
856	echo includedir = $includedir >> configure.log
857	echo libdir = $libdir >> configure.log
858	echo mandir = $mandir >> configure.log
859	echo prefix = $prefix >> configure.log
860	echo sharedlibdir = $sharedlibdir >> configure.log
861	echo uname = $uname >> configure.log
862
863	# udpate Makefile with the configure results
864	sed < ${SRCDIR}Makefile.in "
865	/^CC =/s#=.#=$CC#
866	/^CFLAGS =/s#=.#=$CFLAGS#
867	/^SFLAGS =/s#=.#=$SFLAGS#
868	/^LDFLAGS =/s#=.#=$LDFLAGS#
869	/^LDSHARED =/s#=.#=$LDSHARED#
870	/^CPP =/s#=.#=$CPP#
871	/^STATICLIB =/s#=.#=$STATICLIB#
872	/^SHAREDLIB =/s#=.#=$SHAREDLIB#
873	/^SHAREDLIBV =/s#=.#=$SHAREDLIBV#
874	/^SHAREDLIBM =/s#=.#=$SHAREDLIBM#
875	/^AR =/s#=.#=$AR#
876	/^ARFLAGS =/s#=.#=$ARFLAGS#
877	/^RANLIB =/s#=.#=$RANLIB#
878	/^LDCONFIG =/s#=.#=$LDCONFIG#
879	/^LDSHAREDLIBC =/s#=.#=$LDSHAREDLIBC#
880	/^EXE =/s#=.#=$EXE#
881	/^SRCDIR =/s#=.#=$SRCDIR#
882	/^ZINC =/s#=.#=$ZINC#
883	/^ZINCOUT =/s#=.#=$ZINCOUT#
884	/^prefix =/s#=.#=$prefix#
885	/^exec_prefix =/s#=.#=$exec_prefix#
886	/^libdir =/s#=.#=$libdir#
887	/^sharedlibdir =/s#=.#=$sharedlibdir#
888	/^includedir =/s#=.#=$includedir#
889	/^mandir =/s#=.#=$mandir#
890	/^OBJC =/s#=.#= $OBJC#
891	/^PIC_OBJC =/s#=.#= $PIC_OBJC#
892	/^all: /s#:.#: $ALL#
893	/^test: /s#:.#: $TEST#
894	" > Makefile
895
896	# create zlib.pc with the configure results
897	sed < ${SRCDIR}zlib.pc.in "
898	/^CC =/s#=.#=$CC#
899	/^CFLAGS =/s#=.#=$CFLAGS#
900	/^CPP =/s#=.#=$CPP#
901	/^LDSHARED =/s#=.#=$LDSHARED#
902	/^STATICLIB =/s#=.#=$STATICLIB#
903	/^SHAREDLIB =/s#=.#=$SHAREDLIB#
904	/^SHAREDLIBV =/s#=.#=$SHAREDLIBV#
905	/^SHAREDLIBM =/s#=.#=$SHAREDLIBM#
906	/^AR =/s#=.#=$AR#
907	/^ARFLAGS =/s#=.#=$ARFLAGS#
908	/^RANLIB =/s#=.#=$RANLIB#
909	/^EXE =/s#=.#=$EXE#
910	/^prefix =/s#=.#=$prefix#
911	/^exec_prefix =/s#=.#=$exec_prefix#
912	/^libdir =/s#=.#=$libdir#
913	/^sharedlibdir =/s#=.#=$sharedlibdir#
914	/^includedir =/s#=.#=$includedir#
915	/^mandir =/s#=.#=$mandir#
916	/^LDFLAGS =/s#=.#=$LDFLAGS#
917	" \| sed -e "
918	s/\@VERSION\@/$VER/g;
919	" > zlib.pc
920
921	# done
922	leave 0

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