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/src/FreeImage/Source/ZLib/configure

https://bitbucket.org/cabalistic/ogredeps/
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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
 16echo -------------------- >> configure.log
 17echo $0 $* >> configure.log
 18date >> configure.log
 19
 20if [ -n "${CHOST}" ]; then
 21    uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
 22    CROSS_PREFIX="${CHOST}-"
 23fi
 24
 25STATICLIB=libz.a
 26VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
 27VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
 28VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
 29VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
 30if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
 31    AR=${AR-"${CROSS_PREFIX}ar"}
 32    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
 33else
 34    AR=${AR-"ar"}
 35    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
 36fi
 37ARFLAGS=${ARFLAGS-"rc"}
 38if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
 39    RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
 40    test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
 41else
 42    RANLIB=${RANLIB-"ranlib"}
 43fi
 44if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
 45    NM=${NM-"${CROSS_PREFIX}nm"}
 46    test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
 47else
 48    NM=${NM-"nm"}
 49fi
 50LDCONFIG=${LDCONFIG-"ldconfig"}
 51LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
 52ARCHS=
 53prefix=${prefix-/usr/local}
 54exec_prefix=${exec_prefix-'${prefix}'}
 55libdir=${libdir-'${exec_prefix}/lib'}
 56sharedlibdir=${sharedlibdir-'${libdir}'}
 57includedir=${includedir-'${prefix}/include'}
 58mandir=${mandir-'${prefix}/share/man'}
 59shared_ext='.so'
 60shared=1
 61solo=0
 62cover=0
 63zprefix=0
 64build64=0
 65gcc=0
 66old_cc="$CC"
 67old_cflags="$CFLAGS"
 68OBJC='$(OBJZ) $(OBJG)'
 69PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
 70
 71while test $# -ge 1
 72do
 73case "$1" in
 74    -h* | --help)
 75      echo 'usage:' | tee -a configure.log
 76      echo '  configure [--zprefix] [--prefix=PREFIX]  [--eprefix=EXPREFIX]' | tee -a configure.log
 77      echo '    [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
 78      echo '    [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
 79        exit 0 ;;
 80    -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
 81    -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
 82    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
 83    --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
 84    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
 85    -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
 86    -p* | --prefix) prefix="$2"; shift; shift ;;
 87    -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
 88    -l* | --libdir) libdir="$2"; shift; shift ;;
 89    -i* | --includedir) includedir="$2"; shift; shift ;;
 90    -s* | --shared | --enable-shared) shared=1; shift ;;
 91    -t | --static) shared=0; shift ;;
 92    --solo) solo=1; shift ;;
 93    --cover) cover=1; shift ;;
 94    -z* | --zprefix) zprefix=1; shift ;;
 95    -6* | --64) build64=1; shift ;;
 96    -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
 97    --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
 98    --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
 99    *) echo "unknown option: $1"; echo "$0 --help for help" | tee -a configure.log; exit 1 ;;
100    esac
101done
102
103test=ztest$$
104
105show()
106{
107  case "$*" in
108    *$test.c*)
109      echo === $test.c === >> configure.log
110      cat $test.c >> configure.log
111      echo === >> configure.log;;
112  esac
113  echo $* >> configure.log
114}
115
116cat > $test.c <<EOF
117#error error
118EOF
119if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
120  try()
121  {
122    show $*
123    test "`( $* ) 2>&1 | tee -a configure.log`" = ""
124  }
125  echo - using any output from compiler to indicate an error >> configure.log
126else
127  try()
128  {
129    show $*
130    ( $* ) >> configure.log 2>&1
131    ret=$?
132    if test $ret -ne 0; then
133      echo "(exit code "$ret")" >> configure.log
134    fi
135    return $ret
136  }
137fi
138
139echo >> configure.log
140
141cat > $test.c <<EOF
142extern int getchar();
143int hello() {return getchar();}
144EOF
145
146test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
147cc=${CC-${CROSS_PREFIX}gcc}
148cflags=${CFLAGS-"-O3"}
149# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
150case "$cc" in
151  *gcc*) gcc=1 ;;
152esac
153case `$cc -v 2>&1` in
154  *gcc*) gcc=1 ;;
155esac
156
157show $cc -c $cflags $test.c
158if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) >> configure.log 2>&1; then
159  echo ... using gcc >> configure.log
160  CC="$cc"
161  CFLAGS="${CFLAGS--O3} ${ARCHS}"
162  SFLAGS="${CFLAGS--O3} -fPIC"
163  LDFLAGS="${LDFLAGS} ${ARCHS}"
164  if test $build64 -eq 1; then
165    CFLAGS="${CFLAGS} -m64"
166    SFLAGS="${SFLAGS} -m64"
167  fi
168  if test "${ZLIBGCCWARN}" = "YES"; then
169    CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
170  fi
171  if test -z "$uname"; then
172    uname=`(uname -s || echo unknown) 2>/dev/null`
173  fi
174  case "$uname" in
175  Linux* | linux* | GNU | GNU/* | solaris*)
176        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
177  *BSD | *bsd* | DragonFly)
178        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
179        LDCONFIG="ldconfig -m" ;;
180  CYGWIN* | Cygwin* | cygwin* | OS/2*)
181        EXE='.exe' ;;
182  MINGW* | mingw*)
183# temporary bypass
184        rm -f $test.[co] $test $test$shared_ext
185        echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
186        exit 1
187        LDSHARED=${LDSHARED-"$cc -shared"}
188        LDSHAREDLIBC=""
189        EXE='.exe' ;;
190  QNX*)  # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
191         # (alain.bonnefoy@icbt.com)
192                 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
193  HP-UX*)
194         LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
195         case `(uname -m || echo unknown) 2>/dev/null` in
196         ia64)
197                 shared_ext='.so'
198                 SHAREDLIB='libz.so' ;;
199         *)
200                 shared_ext='.sl'
201                 SHAREDLIB='libz.sl' ;;
202         esac ;;
203  Darwin* | darwin*)
204             shared_ext='.dylib'
205             SHAREDLIB=libz$shared_ext
206             SHAREDLIBV=libz.$VER$shared_ext
207             SHAREDLIBM=libz.$VER1$shared_ext
208             LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
209             AR="libtool"
210             ARFLAGS="-o" ;;
211  *)             LDSHARED=${LDSHARED-"$cc -shared"} ;;
212  esac
213else
214  # find system name and corresponding cc options
215  CC=${CC-cc}
216  gcc=0
217  echo ... using $CC >> configure.log
218  if test -z "$uname"; then
219    uname=`(uname -sr || echo unknown) 2>/dev/null`
220  fi
221  case "$uname" in
222  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
223             CFLAGS=${CFLAGS-"-O"}
224#            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
225             LDSHARED=${LDSHARED-"ld -b"}
226         case `(uname -m || echo unknown) 2>/dev/null` in
227         ia64)
228             shared_ext='.so'
229             SHAREDLIB='libz.so' ;;
230         *)
231             shared_ext='.sl'
232             SHAREDLIB='libz.sl' ;;
233         esac ;;
234  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
235             CFLAGS=${CFLAGS-"-ansi -O2"}
236             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
237  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
238             CFLAGS=${CFLAGS-"-O -std1"}
239             LDFLAGS="${LDFLAGS} -Wl,-rpath,."
240             LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
241  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
242             CFLAGS=${CFLAGS-"-O -std1"}
243             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
244  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
245             CFLAGS=${CFLAGS-"-4 -O"}
246             LDSHARED=${LDSHARED-"cc"}
247             RANLIB=${RANLIB-"true"}
248             AR="cc"
249             ARFLAGS="-A" ;;
250  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
251             CFLAGS=${CFLAGS-"-O3"}
252             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
253  SunOS\ 5* | solaris*)
254         LDSHARED=${LDSHARED-"cc -G"}
255         case `(uname -m || echo unknown) 2>/dev/null` in
256         i86*)
257             SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
258             CFLAGS=${CFLAGS-"-xpentium -fast"} ;;
259         *)
260             SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
261             CFLAGS=${CFLAGS-"-fast -xcg92"} ;;
262         esac ;;
263  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
264             CFLAGS=${CFLAGS-"-O2"}
265             LDSHARED=${LDSHARED-"ld"} ;;
266  SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
267             CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
268             LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
269  UNIX_System_V\ 4.2.0)
270             SFLAGS=${CFLAGS-"-KPIC -O"}
271             CFLAGS=${CFLAGS-"-O"}
272             LDSHARED=${LDSHARED-"cc -G"} ;;
273  UNIX_SV\ 4.2MP)
274             SFLAGS=${CFLAGS-"-Kconform_pic -O"}
275             CFLAGS=${CFLAGS-"-O"}
276             LDSHARED=${LDSHARED-"cc -G"} ;;
277  OpenUNIX\ 5)
278             SFLAGS=${CFLAGS-"-KPIC -O"}
279             CFLAGS=${CFLAGS-"-O"}
280             LDSHARED=${LDSHARED-"cc -G"} ;;
281  AIX*)  # Courtesy of dbakker@arrayasolutions.com
282             SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
283             CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
284             LDSHARED=${LDSHARED-"xlc -G"} ;;
285  # send working options for other systems to zlib@gzip.org
286  *)         SFLAGS=${CFLAGS-"-O"}
287             CFLAGS=${CFLAGS-"-O"}
288             LDSHARED=${LDSHARED-"cc -shared"} ;;
289  esac
290fi
291
292SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
293SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
294SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
295
296echo >> configure.log
297
298if test $shared -eq 1; then
299  echo Checking for shared library support... | tee -a configure.log
300  # we must test in two steps (cc then ld), required at least on SunOS 4.x
301  if try $CC -w -c $SFLAGS $test.c &&
302     try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
303    echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
304  elif test -z "$old_cc" -a -z "$old_cflags"; then
305    echo No shared library support. | tee -a configure.log
306    shared=0;
307  else
308    echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
309    shared=0;
310  fi
311fi
312if test $shared -eq 0; then
313  LDSHARED="$CC"
314  ALL="static"
315  TEST="all teststatic"
316  SHAREDLIB=""
317  SHAREDLIBV=""
318  SHAREDLIBM=""
319  echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
320else
321  ALL="static shared"
322  TEST="all teststatic testshared"
323fi
324
325CPP=${CPP-"$CC -E"}
326case $CFLAGS in
327  *ASMV*)
328    echo >> configure.log
329    show "$NM $test.o | grep _hello"
330    if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
331      CPP="$CPP -DNO_UNDERLINE"
332      echo Checking for underline in external names... No. | tee -a configure.log
333    else
334      echo Checking for underline in external names... Yes. | tee -a configure.log
335    fi ;;
336esac
337
338echo >> configure.log
339
340cat > $test.c <<EOF
341#include <sys/types.h>
342off64_t dummy = 0;
343EOF
344if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
345  CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
346  SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
347  ALL="${ALL} all64"
348  TEST="${TEST} test64"
349  echo "Checking for off64_t... Yes." | tee -a configure.log
350  echo "Checking for fseeko... Yes." | tee -a configure.log
351else
352  echo "Checking for off64_t... No." | tee -a configure.log
353  echo >> configure.log
354  cat > $test.c <<EOF
355#include <stdio.h>
356int main(void) {
357  fseeko(NULL, 0, 0);
358  return 0;
359}
360EOF
361  if try $CC $CFLAGS -o $test $test.c; then
362    echo "Checking for fseeko... Yes." | tee -a configure.log
363  else
364    CFLAGS="${CFLAGS} -DNO_FSEEKO"
365    SFLAGS="${SFLAGS} -DNO_FSEEKO"
366    echo "Checking for fseeko... No." | tee -a configure.log
367  fi
368fi
369
370cp -p zconf.h.in zconf.h
371
372echo >> configure.log
373
374cat > $test.c <<EOF
375#include <unistd.h>
376int main() { return 0; }
377EOF
378if try $CC -c $CFLAGS $test.c; then
379  sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
380  mv zconf.temp.h zconf.h
381  echo "Checking for unistd.h... Yes." | tee -a configure.log
382else
383  echo "Checking for unistd.h... No." | tee -a configure.log
384fi
385
386echo >> configure.log
387
388cat > $test.c <<EOF
389#include <stdarg.h>
390int main() { return 0; }
391EOF
392if try $CC -c $CFLAGS $test.c; then
393  sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
394  mv zconf.temp.h zconf.h
395  echo "Checking for stdarg.h... Yes." | tee -a configure.log
396else
397  echo "Checking for stdarg.h... No." | tee -a configure.log
398fi
399
400if test $zprefix -eq 1; then
401  sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
402  mv zconf.temp.h zconf.h
403  echo >> configure.log
404  echo "Using z_ prefix on all symbols." | tee -a configure.log
405fi
406
407if test $solo -eq 1; then
408  sed '/#define ZCONF_H/a\
409#define Z_SOLO
410
411' < zconf.h > zconf.temp.h
412  mv zconf.temp.h zconf.h
413OBJC='$(OBJZ)'
414PIC_OBJC='$(PIC_OBJZ)'
415fi
416
417if test $cover -eq 1; then
418  CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
419fi
420
421echo >> configure.log
422
423cat > $test.c <<EOF
424#include <stdio.h>
425#include <stdarg.h>
426#include "zconf.h"
427int main()
428{
429#ifndef STDC
430  choke me
431#endif
432  return 0;
433}
434EOF
435
436if try $CC -c $CFLAGS $test.c; then
437  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
438
439  echo >> configure.log
440  cat > $test.c <<EOF
441#include <stdio.h>
442#include <stdarg.h>
443int mytest(const char *fmt, ...)
444{
445  char buf[20];
446  va_list ap;
447  va_start(ap, fmt);
448  vsnprintf(buf, sizeof(buf), fmt, ap);
449  va_end(ap);
450  return 0;
451}
452int main()
453{
454  return (mytest("Hello%d\n", 1));
455}
456EOF
457  if try $CC $CFLAGS -o $test $test.c; then
458    echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
459
460    echo >> configure.log
461    cat >$test.c <<EOF
462#include <stdio.h>
463#include <stdarg.h>
464int mytest(const char *fmt, ...)
465{
466  int n;
467  char buf[20];
468  va_list ap;
469  va_start(ap, fmt);
470  n = vsnprintf(buf, sizeof(buf), fmt, ap);
471  va_end(ap);
472  return n;
473}
474int main()
475{
476  return (mytest("Hello%d\n", 1));
477}
478EOF
479
480    if try $CC -c $CFLAGS $test.c; then
481      echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
482    else
483      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
484      SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
485      echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
486      echo "  WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
487      echo "  can build but will be open to possible string-format security" | tee -a configure.log
488      echo "  vulnerabilities." | tee -a configure.log
489    fi
490  else
491    CFLAGS="$CFLAGS -DNO_vsnprintf"
492    SFLAGS="$SFLAGS -DNO_vsnprintf"
493    echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
494    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
495    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
496    echo "  vulnerabilities." | tee -a configure.log
497
498    echo >> configure.log
499    cat >$test.c <<EOF
500#include <stdio.h>
501#include <stdarg.h>
502int mytest(const char *fmt, ...)
503{
504  int n;
505  char buf[20];
506  va_list ap;
507  va_start(ap, fmt);
508  n = vsprintf(buf, fmt, ap);
509  va_end(ap);
510  return n;
511}
512int main()
513{
514  return (mytest("Hello%d\n", 1));
515}
516EOF
517
518    if try $CC -c $CFLAGS $test.c; then
519      echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
520    else
521      CFLAGS="$CFLAGS -DHAS_vsprintf_void"
522      SFLAGS="$SFLAGS -DHAS_vsprintf_void"
523      echo "Checking for return value of vsprintf()... No." | tee -a configure.log
524      echo "  WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
525      echo "  can build but will be open to possible string-format security" | tee -a configure.log
526      echo "  vulnerabilities." | tee -a configure.log
527    fi
528  fi
529else
530  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
531
532  echo >> configure.log
533  cat >$test.c <<EOF
534#include <stdio.h>
535int mytest()
536{
537  char buf[20];
538  snprintf(buf, sizeof(buf), "%s", "foo");
539  return 0;
540}
541int main()
542{
543  return (mytest());
544}
545EOF
546
547  if try $CC $CFLAGS -o $test $test.c; then
548    echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
549
550    echo >> configure.log
551    cat >$test.c <<EOF
552#include <stdio.h>
553int mytest()
554{
555  char buf[20];
556  return snprintf(buf, sizeof(buf), "%s", "foo");
557}
558int main()
559{
560  return (mytest());
561}
562EOF
563
564    if try $CC -c $CFLAGS $test.c; then
565      echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
566    else
567      CFLAGS="$CFLAGS -DHAS_snprintf_void"
568      SFLAGS="$SFLAGS -DHAS_snprintf_void"
569      echo "Checking for return value of snprintf()... No." | tee -a configure.log
570      echo "  WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
571      echo "  can build but will be open to possible string-format security" | tee -a configure.log
572      echo "  vulnerabilities." | tee -a configure.log
573    fi
574  else
575    CFLAGS="$CFLAGS -DNO_snprintf"
576    SFLAGS="$SFLAGS -DNO_snprintf"
577    echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
578    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
579    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
580    echo "  vulnerabilities." | tee -a configure.log
581
582    echo >> configure.log
583    cat >$test.c <<EOF
584#include <stdio.h>
585int mytest()
586{
587  char buf[20];
588  return sprintf(buf, "%s", "foo");
589}
590int main()
591{
592  return (mytest());
593}
594EOF
595
596    if try $CC -c $CFLAGS $test.c; then
597      echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
598    else
599      CFLAGS="$CFLAGS -DHAS_sprintf_void"
600      SFLAGS="$SFLAGS -DHAS_sprintf_void"
601      echo "Checking for return value of sprintf()... No." | tee -a configure.log
602      echo "  WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
603      echo "  can build but will be open to possible string-format security" | tee -a configure.log
604      echo "  vulnerabilities." | tee -a configure.log
605    fi
606  fi
607fi
608
609if test "$gcc" -eq 1; then
610  echo >> configure.log
611  cat > $test.c <<EOF
612#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33)
613#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
614#else
615#  define ZLIB_INTERNAL
616#endif
617int ZLIB_INTERNAL foo;
618int main()
619{
620  return 0;
621}
622EOF
623  if try $CC -c $CFLAGS $test.c; then
624    echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
625  else
626    CFLAGS="$CFLAGS -DNO_VIZ"
627    SFLAGS="$SFLAGS -DNO_VIZ"
628    echo "Checking for attribute(visibility) support... No." | tee -a configure.log
629  fi
630fi
631
632rm -f $test.[co] $test $test$shared_ext $test.gcno
633
634# show the results in the log
635echo >> configure.log
636echo ALL = $ALL >> configure.log
637echo AR = $AR >> configure.log
638echo ARFLAGS = $ARFLAGS >> configure.log
639echo CC = $CC >> configure.log
640echo CFLAGS = $CFLAGS >> configure.log
641echo CPP = $CPP >> configure.log
642echo EXE = $EXE >> configure.log
643echo LDCONFIG = $LDCONFIG >> configure.log
644echo LDFLAGS = $LDFLAGS >> configure.log
645echo LDSHARED = $LDSHARED >> configure.log
646echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
647echo OBJC = $OBJC >> configure.log
648echo PIC_OBJC = $PIC_OBJC >> configure.log
649echo RANLIB = $RANLIB >> configure.log
650echo SFLAGS = $SFLAGS >> configure.log
651echo SHAREDLIB = $SHAREDLIB >> configure.log
652echo SHAREDLIBM = $SHAREDLIBM >> configure.log
653echo SHAREDLIBV = $SHAREDLIBV >> configure.log
654echo STATICLIB = $STATICLIB >> configure.log
655echo TEST = $TEST >> configure.log
656echo VER = $VER >> configure.log
657echo exec_prefix = $exec_prefix >> configure.log
658echo includedir = $includedir >> configure.log
659echo libdir = $libdir >> configure.log
660echo mandir = $mandir >> configure.log
661echo prefix = $prefix >> configure.log
662echo sharedlibdir = $sharedlibdir >> configure.log
663echo uname = $uname >> configure.log
664echo -------------------- >> configure.log
665echo >> configure.log
666echo >> configure.log
667
668# udpate Makefile
669sed < Makefile.in "
670/^CC *=/s#=.*#=$CC#
671/^CFLAGS *=/s#=.*#=$CFLAGS#
672/^SFLAGS *=/s#=.*#=$SFLAGS#
673/^LDFLAGS *=/s#=.*#=$LDFLAGS#
674/^LDSHARED *=/s#=.*#=$LDSHARED#
675/^CPP *=/s#=.*#=$CPP#
676/^STATICLIB *=/s#=.*#=$STATICLIB#
677/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
678/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
679/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
680/^AR *=/s#=.*#=$AR#
681/^ARFLAGS *=/s#=.*#=$ARFLAGS#
682/^RANLIB *=/s#=.*#=$RANLIB#
683/^LDCONFIG *=/s#=.*#=$LDCONFIG#
684/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
685/^EXE *=/s#=.*#=$EXE#
686/^prefix *=/s#=.*#=$prefix#
687/^exec_prefix *=/s#=.*#=$exec_prefix#
688/^libdir *=/s#=.*#=$libdir#
689/^sharedlibdir *=/s#=.*#=$sharedlibdir#
690/^includedir *=/s#=.*#=$includedir#
691/^mandir *=/s#=.*#=$mandir#
692/^OBJC *=/s#=.*#= $OBJC#
693/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
694/^all: */s#:.*#: $ALL#
695/^test: */s#:.*#: $TEST#
696" > Makefile
697
698sed < zlib.pc.in "
699/^CC *=/s#=.*#=$CC#
700/^CFLAGS *=/s#=.*#=$CFLAGS#
701/^CPP *=/s#=.*#=$CPP#
702/^LDSHARED *=/s#=.*#=$LDSHARED#
703/^STATICLIB *=/s#=.*#=$STATICLIB#
704/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
705/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
706/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
707/^AR *=/s#=.*#=$AR#
708/^ARFLAGS *=/s#=.*#=$ARFLAGS#
709/^RANLIB *=/s#=.*#=$RANLIB#
710/^EXE *=/s#=.*#=$EXE#
711/^prefix *=/s#=.*#=$prefix#
712/^exec_prefix *=/s#=.*#=$exec_prefix#
713/^libdir *=/s#=.*#=$libdir#
714/^sharedlibdir *=/s#=.*#=$sharedlibdir#
715/^includedir *=/s#=.*#=$includedir#
716/^mandir *=/s#=.*#=$mandir#
717/^LDFLAGS *=/s#=.*#=$LDFLAGS#
718" | sed -e "
719s/\@VERSION\@/$VER/g;
720" > zlib.pc