source: rtems/cpukit/zlib/configure @ a7aa735

4.11
Last change on this file since a7aa735 was 8198f69, checked in by Ralf Corsepius <ralf.corsepius@…>, on Mar 18, 2011 at 10:10:55 AM

Import zlib-1.2.3

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File size: 12.9 KB
Line 
1#!/bin/sh
2# configure script for zlib. This script is needed only if
3# you wish to build a shared library and your system supports them,
4# of if you need special compiler, flags or install directory.
5# Otherwise, you can just use directly "make test; make install"
6#
7# To create a shared library, use "configure --shared"; by default a static
8# library is created. If the primitive shared library support provided here
9# does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz
10#
11# To impose specific compiler or flags or install directory, use for example:
12#    prefix=$HOME CC=cc CFLAGS="-O4" ./configure
13# or for csh/tcsh users:
14#    (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
15# LDSHARED is the command to be used to create a shared library
16
17# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
18# If you have problems, try without defining CC and CFLAGS before reporting
19# an error.
20
21LIBS=libz.a
22LDFLAGS="-L. ${LIBS}"
23VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
24VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
25VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
26AR=${AR-"ar rc"}
27RANLIB=${RANLIB-"ranlib"}
28prefix=${prefix-/usr/local}
29exec_prefix=${exec_prefix-'${prefix}'}
30libdir=${libdir-'${exec_prefix}/lib'}
31includedir=${includedir-'${prefix}/include'}
32mandir=${mandir-'${prefix}/share/man'}
33shared_ext='.so'
34shared=0
35gcc=0
36old_cc="$CC"
37old_cflags="$CFLAGS"
38
39while test $# -ge 1
40do
41case "$1" in
42    -h* | --h*)
43      echo 'usage:'
44      echo '  configure [--shared] [--prefix=PREFIX]  [--exec_prefix=EXPREFIX]'
45      echo '     [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
46        exit 0;;
47    -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
48    -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
49    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
50    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
51    -p* | --p*) prefix="$2"; shift; shift;;
52    -e* | --e*) exec_prefix="$2"; shift; shift;;
53    -l* | --l*) libdir="$2"; shift; shift;;
54    -i* | --i*) includedir="$2"; shift; shift;;
55    -s* | --s*) shared=1; shift;;
56    *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;;
57    esac
58done
59
60test=ztest$$
61cat > $test.c <<EOF
62extern int getchar();
63int hello() {return getchar();}
64EOF
65
66test -z "$CC" && echo Checking for gcc...
67cc=${CC-gcc}
68cflags=${CFLAGS-"-O3"}
69# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
70case "$cc" in
71  *gcc*) gcc=1;;
72esac
73
74if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
75  CC="$cc"
76  SFLAGS=${CFLAGS-"-fPIC -O3"}
77  CFLAGS="$cflags"
78  case `(uname -s || echo unknown) 2>/dev/null` in
79  Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};;
80  CYGWIN* | Cygwin* | cygwin* | OS/2* )
81             EXE='.exe';;
82  QNX*)  # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
83         # (alain.bonnefoy@icbt.com)
84                 LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};;
85  HP-UX*)
86         LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
87         case `(uname -m || echo unknown) 2>/dev/null` in
88         ia64)
89                 shared_ext='.so'
90                 SHAREDLIB='libz.so';;
91         *)
92                 shared_ext='.sl'
93                 SHAREDLIB='libz.sl';;
94         esac;;
95  Darwin*)   shared_ext='.dylib'
96             SHAREDLIB=libz$shared_ext
97             SHAREDLIBV=libz.$VER$shared_ext
98             SHAREDLIBM=libz.$VER1$shared_ext
99             LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};;
100  *)             LDSHARED=${LDSHARED-"$cc -shared"};;
101  esac
102else
103  # find system name and corresponding cc options
104  CC=${CC-cc}
105  case `(uname -sr || echo unknown) 2>/dev/null` in
106  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
107             CFLAGS=${CFLAGS-"-O"}
108#            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
109             LDSHARED=${LDSHARED-"ld -b"}
110         case `(uname -m || echo unknown) 2>/dev/null` in
111         ia64)
112             shared_ext='.so'
113             SHAREDLIB='libz.so';;
114         *)
115             shared_ext='.sl'
116             SHAREDLIB='libz.sl';;
117         esac;;
118  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
119             CFLAGS=${CFLAGS-"-ansi -O2"}
120             LDSHARED=${LDSHARED-"cc -shared"};;
121  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
122             CFLAGS=${CFLAGS-"-O -std1"}
123             LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
124  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
125             CFLAGS=${CFLAGS-"-O -std1"}
126             LDSHARED=${LDSHARED-"cc -shared"};;
127  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
128             CFLAGS=${CFLAGS-"-4 -O"}
129             LDSHARED=${LDSHARED-"cc"}
130             RANLIB=${RANLIB-"true"}
131             AR="cc -A";;
132  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
133             CFLAGS=${CFLAGS-"-O3"}
134             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
135  SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
136             CFLAGS=${CFLAGS-"-fast -xcg89"}
137             LDSHARED=${LDSHARED-"cc -G"};;
138  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
139             CFLAGS=${CFLAGS-"-O2"}
140             LDSHARED=${LDSHARED-"ld"};;
141  SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
142             CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"}
143             LDSHARED=${LDSHARED-"cc -xarch=v9b"};;
144  UNIX_System_V\ 4.2.0)
145             SFLAGS=${CFLAGS-"-KPIC -O"}
146             CFLAGS=${CFLAGS-"-O"}
147             LDSHARED=${LDSHARED-"cc -G"};;
148  UNIX_SV\ 4.2MP)
149             SFLAGS=${CFLAGS-"-Kconform_pic -O"}
150             CFLAGS=${CFLAGS-"-O"}
151             LDSHARED=${LDSHARED-"cc -G"};;
152  OpenUNIX\ 5)
153             SFLAGS=${CFLAGS-"-KPIC -O"}
154             CFLAGS=${CFLAGS-"-O"}
155             LDSHARED=${LDSHARED-"cc -G"};;
156  AIX*)  # Courtesy of dbakker@arrayasolutions.com
157             SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
158             CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
159             LDSHARED=${LDSHARED-"xlc -G"};;
160  # send working options for other systems to support@gzip.org
161  *)         SFLAGS=${CFLAGS-"-O"}
162             CFLAGS=${CFLAGS-"-O"}
163             LDSHARED=${LDSHARED-"cc -shared"};;
164  esac
165fi
166
167SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
168SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
169SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
170
171if test $shared -eq 1; then
172  echo Checking for shared library support...
173  # we must test in two steps (cc then ld), required at least on SunOS 4.x
174  if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
175     test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
176    CFLAGS="$SFLAGS"
177    LIBS="$SHAREDLIBV"
178    echo Building shared library $SHAREDLIBV with $CC.
179  elif test -z "$old_cc" -a -z "$old_cflags"; then
180    echo No shared library support.
181    shared=0;
182  else
183    echo 'No shared library support; try without defining CC and CFLAGS'
184    shared=0;
185  fi
186fi
187if test $shared -eq 0; then
188  LDSHARED="$CC"
189  echo Building static library $LIBS version $VER with $CC.
190else
191  LDFLAGS="-L. ${SHAREDLIBV}"
192fi
193
194cat > $test.c <<EOF
195#include <unistd.h>
196int main() { return 0; }
197EOF
198if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
199  sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h
200  echo "Checking for unistd.h... Yes."
201else
202  cp -p zconf.in.h zconf.h
203  echo "Checking for unistd.h... No."
204fi
205
206cat > $test.c <<EOF
207#include <stdio.h>
208#include <stdarg.h>
209#include "zconf.h"
210
211int main()
212{
213#ifndef STDC
214  choke me
215#endif
216
217  return 0;
218}
219EOF
220
221if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
222  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()"
223
224  cat > $test.c <<EOF
225#include <stdio.h>
226#include <stdarg.h>
227
228int mytest(char *fmt, ...)
229{
230  char buf[20];
231  va_list ap;
232
233  va_start(ap, fmt);
234  vsnprintf(buf, sizeof(buf), fmt, ap);
235  va_end(ap);
236  return 0;
237}
238
239int main()
240{
241  return (mytest("Hello%d\n", 1));
242}
243EOF
244
245  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
246    echo "Checking for vsnprintf() in stdio.h... Yes."
247
248    cat >$test.c <<EOF
249#include <stdio.h>
250#include <stdarg.h>
251
252int mytest(char *fmt, ...)
253{
254  int n;
255  char buf[20];
256  va_list ap;
257
258  va_start(ap, fmt);
259  n = vsnprintf(buf, sizeof(buf), fmt, ap);
260  va_end(ap);
261  return n;
262}
263
264int main()
265{
266  return (mytest("Hello%d\n", 1));
267}
268EOF
269
270    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
271      echo "Checking for return value of vsnprintf()... Yes."
272    else
273      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
274      echo "Checking for return value of vsnprintf()... No."
275      echo "  WARNING: apparently vsnprintf() does not return a value. zlib"
276      echo "  can build but will be open to possible string-format security"
277      echo "  vulnerabilities."
278    fi
279  else
280    CFLAGS="$CFLAGS -DNO_vsnprintf"
281    echo "Checking for vsnprintf() in stdio.h... No."
282    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
283    echo "  can build but will be open to possible buffer-overflow security"
284    echo "  vulnerabilities."
285
286    cat >$test.c <<EOF
287#include <stdio.h>
288#include <stdarg.h>
289
290int mytest(char *fmt, ...)
291{
292  int n;
293  char buf[20];
294  va_list ap;
295
296  va_start(ap, fmt);
297  n = vsprintf(buf, fmt, ap);
298  va_end(ap);
299  return n;
300}
301
302int main()
303{
304  return (mytest("Hello%d\n", 1));
305}
306EOF
307
308    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
309      echo "Checking for return value of vsprintf()... Yes."
310    else
311      CFLAGS="$CFLAGS -DHAS_vsprintf_void"
312      echo "Checking for return value of vsprintf()... No."
313      echo "  WARNING: apparently vsprintf() does not return a value. zlib"
314      echo "  can build but will be open to possible string-format security"
315      echo "  vulnerabilities."
316    fi
317  fi
318else
319  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()"
320
321  cat >$test.c <<EOF
322#include <stdio.h>
323
324int mytest()
325{
326  char buf[20];
327
328  snprintf(buf, sizeof(buf), "%s", "foo");
329  return 0;
330}
331
332int main()
333{
334  return (mytest());
335}
336EOF
337
338  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
339    echo "Checking for snprintf() in stdio.h... Yes."
340
341    cat >$test.c <<EOF
342#include <stdio.h>
343
344int mytest()
345{
346  char buf[20];
347
348  return snprintf(buf, sizeof(buf), "%s", "foo");
349}
350
351int main()
352{
353  return (mytest());
354}
355EOF
356
357    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
358      echo "Checking for return value of snprintf()... Yes."
359    else
360      CFLAGS="$CFLAGS -DHAS_snprintf_void"
361      echo "Checking for return value of snprintf()... No."
362      echo "  WARNING: apparently snprintf() does not return a value. zlib"
363      echo "  can build but will be open to possible string-format security"
364      echo "  vulnerabilities."
365    fi
366  else
367    CFLAGS="$CFLAGS -DNO_snprintf"
368    echo "Checking for snprintf() in stdio.h... No."
369    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib"
370    echo "  can build but will be open to possible buffer-overflow security"
371    echo "  vulnerabilities."
372
373    cat >$test.c <<EOF
374#include <stdio.h>
375
376int mytest()
377{
378  char buf[20];
379
380  return sprintf(buf, "%s", "foo");
381}
382
383int main()
384{
385  return (mytest());
386}
387EOF
388
389    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
390      echo "Checking for return value of sprintf()... Yes."
391    else
392      CFLAGS="$CFLAGS -DHAS_sprintf_void"
393      echo "Checking for return value of sprintf()... No."
394      echo "  WARNING: apparently sprintf() does not return a value. zlib"
395      echo "  can build but will be open to possible string-format security"
396      echo "  vulnerabilities."
397    fi
398  fi
399fi
400
401cat >$test.c <<EOF
402#include <errno.h>
403int main() { return 0; }
404EOF
405if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
406  echo "Checking for errno.h... Yes."
407else
408  echo "Checking for errno.h... No."
409  CFLAGS="$CFLAGS -DNO_ERRNO_H"
410fi
411
412cat > $test.c <<EOF
413#include <sys/types.h>
414#include <sys/mman.h>
415#include <sys/stat.h>
416caddr_t hello() {
417  return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
418}
419EOF
420if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
421  CFLAGS="$CFLAGS -DUSE_MMAP"
422  echo Checking for mmap support... Yes.
423else
424  echo Checking for mmap support... No.
425fi
426
427CPP=${CPP-"$CC -E"}
428case $CFLAGS in
429  *ASMV*)
430    if test "`nm $test.o | grep _hello`" = ""; then
431      CPP="$CPP -DNO_UNDERLINE"
432      echo Checking for underline in external names... No.
433    else
434      echo Checking for underline in external names... Yes.
435    fi;;
436esac
437
438rm -f $test.[co] $test $test$shared_ext
439
440# udpate Makefile
441sed < Makefile.in "
442/^CC *=/s#=.*#=$CC#
443/^CFLAGS *=/s#=.*#=$CFLAGS#
444/^CPP *=/s#=.*#=$CPP#
445/^LDSHARED *=/s#=.*#=$LDSHARED#
446/^LIBS *=/s#=.*#=$LIBS#
447/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
448/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
449/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
450/^AR *=/s#=.*#=$AR#
451/^RANLIB *=/s#=.*#=$RANLIB#
452/^EXE *=/s#=.*#=$EXE#
453/^prefix *=/s#=.*#=$prefix#
454/^exec_prefix *=/s#=.*#=$exec_prefix#
455/^libdir *=/s#=.*#=$libdir#
456/^includedir *=/s#=.*#=$includedir#
457/^mandir *=/s#=.*#=$mandir#
458/^LDFLAGS *=/s#=.*#=$LDFLAGS#
459" > Makefile
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