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/vendor/pcre/configure.ac

http://github.com/feyeleanor/RubyGoLightly
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  1dnl Process this file with autoconf to produce a configure script.
  2
  3dnl NOTE FOR MAINTAINERS: Do not use major or minor version numbers with
  4dnl leading zeros, because they may be treated as octal constants. The
  5dnl PCRE_PRERELEASE feature is for identifying release candidates. It might
  6dnl be defined as -RC2, for example. For real releases, it should be defined
  7dnl empty.
  8
  9m4_define(pcre_major, [7])
 10m4_define(pcre_minor, [8])
 11m4_define(pcre_prerelease, [])
 12m4_define(pcre_date, [2008-09-05])
 13
 14# Libtool shared library interface versions (current:revision:age)
 15m4_define(libpcre_version, [0:1:0])
 16m4_define(libpcreposix_version, [0:0:0])
 17m4_define(libpcrecpp_version, [0:0:0])
 18
 19AC_PREREQ(2.57)
 20AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
 21AC_CONFIG_SRCDIR([pcre.h.in])
 22AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
 23AC_CONFIG_HEADERS(config.h)
 24
 25# The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
 26# "-g" for any other compiler. There doesn't seem to be a standard way of
 27# getting rid of the -g (which I don't think is needed for a production
 28# library). This fudge seems to achieve the necessary. First, we remember the
 29# externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
 30# AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
 31# set, they will be set to Autoconf's defaults. Afterwards, if the original
 32# values were not set, remove the -g from the Autoconf defaults.
 33# (PH 02-May-07)
 34
 35remember_set_CFLAGS="$CFLAGS"
 36remember_set_CXXFLAGS="$CXXFLAGS"
 37
 38AC_PROG_CC
 39AC_PROG_CXX
 40
 41if test "x$remember_set_CFLAGS" = "x"
 42then
 43  if test "$CFLAGS" = "-g -O2"
 44  then
 45    CFLAGS="-O2"
 46  elif test "$CFLAGS" = "-g"
 47  then
 48    CFLAGS=""
 49  fi
 50fi
 51
 52if test "x$remember_set_CXXFLAGS" = "x"
 53then
 54  if test "$CXXFLAGS" = "-g -O2"
 55  then
 56    CXXFLAGS="-O2"
 57  elif test "$CXXFLAGS" = "-g"
 58  then
 59    CXXFLAGS=""
 60  fi
 61fi
 62
 63# AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
 64# Check for that case, and just disable c++ code if g++ doesn't run.
 65AC_LANG_PUSH(C++)
 66AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")
 67AC_LANG_POP
 68
 69AC_PROG_INSTALL
 70AC_LIBTOOL_WIN32_DLL
 71AC_PROG_LIBTOOL
 72AC_PROG_LN_S
 73
 74PCRE_MAJOR="pcre_major"
 75PCRE_MINOR="pcre_minor"
 76PCRE_PRERELEASE="pcre_prerelease"
 77PCRE_DATE="pcre_date"
 78
 79AC_SUBST(PCRE_MAJOR)
 80AC_SUBST(PCRE_MINOR)
 81AC_SUBST(PCRE_PRERELEASE)
 82AC_SUBST(PCRE_DATE)
 83
 84# Set a more sensible default value for $(htmldir).
 85if test "x$htmldir" = 'x${docdir}'
 86then
 87  htmldir='${docdir}/html'
 88fi
 89
 90# Handle --disable-cpp
 91AC_ARG_ENABLE(cpp,
 92              AS_HELP_STRING([--disable-cpp],
 93                             [disable C++ support]),
 94              , enable_cpp=yes)
 95
 96# Handle --enable-rebuild-chartables
 97AC_ARG_ENABLE(rebuild-chartables,
 98              AS_HELP_STRING([--enable-rebuild-chartables],
 99                             [rebuild character tables in current locale]),
100              , enable_rebuild_chartables=no)
101
102# Handle --enable-utf8 (disabled by default)
103AC_ARG_ENABLE(utf8,
104              AS_HELP_STRING([--enable-utf8],
105                             [enable UTF-8 support]),
106              , enable_utf8=unset)
107
108# Handle --enable-unicode-properties
109AC_ARG_ENABLE(unicode-properties,
110              AS_HELP_STRING([--enable-unicode-properties],
111                             [enable Unicode properties support (implies --enable-utf8)]),
112              , enable_unicode_properties=no)
113
114# Handle --enable-newline=NL
115dnl AC_ARG_ENABLE(newline,
116dnl               AS_HELP_STRING([--enable-newline=NL],
117dnl                              [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
118dnl               , enable_newline=lf)
119
120# Separate newline options
121ac_pcre_newline=lf
122AC_ARG_ENABLE(newline-is-cr,
123              AS_HELP_STRING([--enable-newline-is-cr],
124                             [use CR as newline character]),
125              ac_pcre_newline=cr)
126AC_ARG_ENABLE(newline-is-lf,
127              AS_HELP_STRING([--enable-newline-is-lf],
128                             [use LF as newline character (default)]),
129              ac_pcre_newline=lf)
130AC_ARG_ENABLE(newline-is-crlf,
131              AS_HELP_STRING([--enable-newline-is-crlf],
132                             [use CRLF as newline sequence]),
133              ac_pcre_newline=crlf)
134AC_ARG_ENABLE(newline-is-anycrlf,
135              AS_HELP_STRING([--enable-newline-is-anycrlf],
136                             [use CR, LF, or CRLF as newline sequence]),
137              ac_pcre_newline=anycrlf)
138AC_ARG_ENABLE(newline-is-any,
139              AS_HELP_STRING([--enable-newline-is-any],
140                             [use any valid Unicode newline sequence]),
141              ac_pcre_newline=any)
142enable_newline="$ac_pcre_newline"
143
144# Handle --enable-bsr-anycrlf
145AC_ARG_ENABLE(bsr-anycrlf,
146              AS_HELP_STRING([--enable-bsr-anycrlf],
147                             [\R matches only CR, LF, CRLF by default]),
148              , enable_bsr_anycrlf=no)
149
150# Handle --enable-ebcdic
151AC_ARG_ENABLE(ebcdic,
152              AS_HELP_STRING([--enable-ebcdic],
153                             [assume EBCDIC coding rather than ASCII; use this only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
154              , enable_ebcdic=no)
155
156# Handle --disable-stack-for-recursion
157AC_ARG_ENABLE(stack-for-recursion,
158              AS_HELP_STRING([--disable-stack-for-recursion],
159                             [don't use stack recursion when matching]),
160              , enable_stack_for_recursion=yes)
161
162# Handle --enable-pcregrep-libz
163AC_ARG_ENABLE(pcregrep-libz,
164              AS_HELP_STRING([--enable-pcregrep-libz],
165                             [link pcregrep with libz to handle .gz files]),
166              , enable_pcregrep_libz=no)
167
168# Handle --enable-pcregrep-libbz2
169AC_ARG_ENABLE(pcregrep-libbz2,
170              AS_HELP_STRING([--enable-pcregrep-libbz2],
171                             [link pcregrep with libbz2 to handle .bz2 files]),
172              , enable_pcregrep_libbz2=no)
173
174# Handle --enable-pcretest-libreadline
175AC_ARG_ENABLE(pcretest-libreadline,
176              AS_HELP_STRING([--enable-pcretest-libreadline],
177                             [link pcretest with libreadline]),
178              , enable_pcretest_libreadline=no)
179
180# Handle --with-posix-malloc-threshold=NBYTES
181AC_ARG_WITH(posix-malloc-threshold,
182            AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
183                           [threshold for POSIX malloc usage (default=10)]),
184            , with_posix_malloc_threshold=10)
185
186# Handle --with-link-size=N
187AC_ARG_WITH(link-size,
188            AS_HELP_STRING([--with-link-size=N],
189                           [internal link size (2, 3, or 4 allowed; default=2)]),
190            , with_link_size=2)
191
192# Handle --with-match-limit=N
193AC_ARG_WITH(match-limit,
194            AS_HELP_STRING([--with-match-limit=N],
195                           [default limit on internal looping (default=10000000)]),
196            , with_match_limit=10000000)
197
198# Handle --with-match-limit_recursion=N
199#
200# Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
201# symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
202# value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
203# different numeric value (or even the same numeric value as MATCH_LIMIT,
204# though no longer defined in terms of the latter).
205#
206AC_ARG_WITH(match-limit-recursion,
207            AS_HELP_STRING([--with-match-limit-recursion=N],
208                           [default limit on internal recursion (default=MATCH_LIMIT)]),
209            , with_match_limit_recursion=MATCH_LIMIT)
210
211# Make sure that if enable_unicode_properties was set, that UTF-8 support
212# is enabled.
213#
214if test "x$enable_unicode_properties" = "xyes"
215then
216  if test "x$enable_utf8" = "xno"
217  then
218    AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
219  fi
220  enable_utf8=yes
221fi
222
223if test "x$enable_utf8" = "xunset"
224then
225  enable_utf8=no
226fi
227
228# Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
229#
230if test "x$enable_ebcdic" = "xyes"
231then
232  enable_rebuild_chartables=yes
233fi
234
235# Convert the newline identifier into the appropriate integer value.
236case "$enable_newline" in
237  lf)      ac_pcre_newline_value=10   ;;
238  cr)      ac_pcre_newline_value=13   ;;
239  crlf)    ac_pcre_newline_value=3338 ;;
240  anycrlf) ac_pcre_newline_value=-2   ;;
241  any)     ac_pcre_newline_value=-1   ;;
242  *)
243  AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
244  ;;
245esac
246
247# Check argument to --with-link-size
248case "$with_link_size" in
249  2|3|4) ;;
250  *)
251  AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
252  ;;
253esac
254
255AH_TOP([
256/* On Unix-like systems config.h.in is converted by "configure" into config.h.
257Some other environments also support the use of "configure". PCRE is written in
258Standard C, but there are a few non-standard things it can cope with, allowing
259it to run on SunOS4 and other "close to standard" systems.
260
261If you are going to build PCRE "by hand" on a system without "configure" you
262should copy the distributed config.h.generic to config.h, and then set up the
263macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
264all of your compile commands, so that config.h is included at the start of
265every source.
266
267Alternatively, you can avoid editing by using -D on the compiler command line
268to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
269
270PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
271HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
272them both to 0; an emulation function will be used. */])
273
274# Checks for header files.
275AC_HEADER_STDC
276AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
277
278# The files below are C++ header files.
279pcre_have_type_traits="0"
280pcre_have_bits_type_traits="0"
281if test "x$enable_cpp" = "xyes" -a -n "$CXX"
282then
283AC_LANG_PUSH(C++)
284
285# Older versions of pcre defined pcrecpp::no_arg, but in new versions
286# it's called pcrecpp::RE::no_arg.  For backwards ABI compatibility,
287# we want to make one an alias for the other.  Different systems do
288# this in different ways.  Some systems, for instance, can do it via
289# a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
290OLD_LDFLAGS="$LDFLAGS"
291for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
292            "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
293  AC_MSG_CHECKING([for alias support in the linker])
294  LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
295  # We try to run the linker with this new ld flag.  If the link fails,
296  # we give up and remove the new flag from LDFLAGS.
297  AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
298                                    class RE { static int no_arg; };
299                                    int RE::no_arg;
300                                  }],
301                                 []),
302                 [AC_MSG_RESULT([yes]);
303                  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
304                  break;],
305                 AC_MSG_RESULT([no]))
306done
307LDFLAGS="$OLD_LDFLAGS"
308
309# We could be more clever here, given we're doing AC_SUBST with this
310# (eg set a var to be the name of the include file we want). But we're not
311# so it's easy to change back to 'regular' autoconf vars if we needed to.
312AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
313                         [pcre_have_cpp_headers="0"])
314AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
315                                     [pcre_have_bits_type_traits="0"])
316AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
317                                [pcre_have_type_traits="0"])
318
319AC_LANG_POP
320fi
321# Using AC_SUBST eliminates the need to include config.h in a public .h file
322AC_SUBST(pcre_have_type_traits)
323AC_SUBST(pcre_have_bits_type_traits)
324
325# Conditional compilation
326AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
327AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
328
329# Checks for typedefs, structures, and compiler characteristics.
330
331AC_C_CONST
332AC_TYPE_SIZE_T
333
334pcre_have_strotolonglong=0
335AC_CHECK_FUNCS(strtoq strtoll _strtoi64, [pcre_have_strotolonglong="1"; break])
336# If we can't convert a string to a long long, pretend we don't even
337# have a long long.
338if test $pcre_have_strotolonglong = "0"; then
339   pcre_have_long_long="0"
340   pcre_have_ulong_long="0"
341else
342  AC_CHECK_TYPES([long long],
343                 [pcre_have_long_long="1"],
344                 [pcre_have_long_long="0"])
345  AC_CHECK_TYPES([unsigned long long],
346                 [pcre_have_ulong_long="1"],
347                 [pcre_have_ulong_long="0"])
348fi
349AC_SUBST(pcre_have_long_long)
350AC_SUBST(pcre_have_ulong_long)
351
352# Checks for library functions.
353
354AC_CHECK_FUNCS(bcopy memmove strerror)
355
356# Check for the availability of libz (aka zlib)
357
358AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
359AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
360
361# Check for the availability of libbz2
362
363AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
364AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
365
366# Check for the availabiity of libreadline
367
368AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
369AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
370AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
371
372# This facilitates -ansi builds under Linux
373dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
374
375if test "x$enable_shared" = "xno" ; then
376  AC_DEFINE([PCRE_STATIC], [1], [
377    Define if linking statically (TODO: make nice with Libtool)])
378fi
379
380# Here is where pcre specific defines are handled
381
382if test "$enable_utf8" = "yes"; then
383  AC_DEFINE([SUPPORT_UTF8], [], [
384    Define to enable support for the UTF-8 Unicode encoding.])
385fi
386
387if test "$enable_unicode_properties" = "yes"; then
388  AC_DEFINE([SUPPORT_UCP], [], [
389    Define to enable support for Unicode properties])
390fi
391
392if test "$enable_stack_for_recursion" = "no"; then
393  AC_DEFINE([NO_RECURSE], [], [
394    PCRE uses recursive function calls to handle backtracking while
395    matching. This can sometimes be a problem on systems that have
396    stacks of limited size. Define NO_RECURSE to get a version that
397    doesn't use recursion in the match() function; instead it creates
398    its own stack by steam using pcre_recurse_malloc() to obtain memory
399    from the heap. For more detail, see the comments and other stuff
400    just above the match() function. On systems that support it,
401    "configure" can be used to set this in the Makefile
402    (use --disable-stack-for-recursion).])
403fi
404
405if test "$enable_pcregrep_libz" = "yes"; then
406  AC_DEFINE([SUPPORT_LIBZ], [], [
407    Define to allow pcregrep to be linked with libz, so that it is
408    able to handle .gz files.])
409fi
410
411if test "$enable_pcregrep_libbz2" = "yes"; then
412  AC_DEFINE([SUPPORT_LIBBZ2], [], [
413    Define to allow pcregrep to be linked with libbz2, so that it is
414    able to handle .bz2 files.])
415fi
416
417if test "$enable_pcretest_libreadline" = "yes"; then
418  AC_DEFINE([SUPPORT_LIBREADLINE], [], [
419    Define to allow pcretest to be linked with libreadline.])
420fi
421
422AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
423  The value of NEWLINE determines the newline character sequence. On
424  systems that support it, "configure" can be used to override the
425  default, which is 10. The possible values are 10 (LF), 13 (CR),
426  3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
427
428if test "$enable_bsr_anycrlf" = "yes"; then
429  AC_DEFINE([BSR_ANYCRLF], [], [
430    By default, the \R escape sequence matches any Unicode line ending
431    character or sequence of characters. If BSR_ANYCRLF is defined, this is
432    changed so that backslash-R matches only CR, LF, or CRLF. The build-
433    time default can be overridden by the user of PCRE at runtime. On
434    systems that support it, "configure" can be used to override the
435    default.])
436fi
437
438AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
439  The value of LINK_SIZE determines the number of bytes used to store
440  links as offsets within the compiled regex. The default is 2, which
441  allows for compiled patterns up to 64K long. This covers the vast
442  majority of cases. However, PCRE can also be compiled to use 3 or 4
443  bytes instead. This allows for longer patterns in extreme cases. On
444  systems that support it, "configure" can be used to override this default.])
445
446AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
447  When calling PCRE via the POSIX interface, additional working storage
448  is required for holding the pointers to capturing substrings because
449  PCRE requires three integers per substring, whereas the POSIX
450  interface provides only two. If the number of expected substrings is
451  small, the wrapper function uses space on the stack, because this is
452  faster than using malloc() for each call. The threshold above which
453  the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
454  systems that support it, "configure" can be used to override this
455  default.])
456
457AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
458  The value of MATCH_LIMIT determines the default number of times the
459  internal match() function can be called during a single execution of
460  pcre_exec(). There is a runtime interface for setting a different
461  limit. The limit exists in order to catch runaway regular
462  expressions that take for ever to determine that they do not match.
463  The default is set very large so that it does not accidentally catch
464  legitimate cases. On systems that support it, "configure" can be
465  used to override this default default.])
466
467AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
468  The above limit applies to all calls of match(), whether or not they
469  increase the recursion depth. In some environments it is desirable
470  to limit the depth of recursive calls of match() more strictly, in
471  order to restrict the maximum amount of stack (or heap, if
472  NO_RECURSE is defined) that is used. The value of
473  MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
474  have any useful effect, it must be less than the value of
475  MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
476  There is a runtime method for setting a different limit. On systems
477  that support it, "configure" can be used to override the default.])
478
479AC_DEFINE([MAX_NAME_SIZE], [32], [
480  This limit is parameterized just in case anybody ever wants to
481  change it. Care must be taken if it is increased, because it guards
482  against integer overflow caused by enormously large patterns.])
483
484AC_DEFINE([MAX_NAME_COUNT], [10000], [
485  This limit is parameterized just in case anybody ever wants to
486  change it. Care must be taken if it is increased, because it guards
487  against integer overflow caused by enormously large patterns.])
488
489AH_VERBATIM([PCRE_EXP_DEFN], [
490/* If you are compiling for a system other than a Unix-like system or
491   Win32, and it needs some magic to be inserted before the definition
492   of a function that is exported by the library, define this macro to
493   contain the relevant magic. If you do not define this macro, it
494   defaults to "extern" for a C compiler and "extern C" for a C++
495   compiler on non-Win32 systems. This macro apears at the start of
496   every exported function that is part of the external API. It does
497   not appear on functions that are "external" in the C sense, but
498   which are internal to the library. */
499#undef PCRE_EXP_DEFN])
500
501if test "$enable_ebcdic" = "yes"; then
502  AC_DEFINE_UNQUOTED([EBCDIC], [], [
503    If you are compiling for a system that uses EBCDIC instead of ASCII
504    character codes, define this macro as 1. On systems that can use
505    "configure", this can be done via --enable-ebcdic.])
506fi
507
508# Platform specific issues
509NO_UNDEFINED=
510EXPORT_ALL_SYMBOLS=
511case $host_os in
512  cygwin* | mingw* )
513    if test X"$enable_shared" = Xyes; then
514      NO_UNDEFINED="-no-undefined"
515      EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
516    fi
517    ;;
518esac
519
520# The extra LDFLAGS for each particular library
521# (Note: The libpcre*_version bits are m4 variables, assigned above)
522
523EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
524                       $NO_UNDEFINED -version-info libpcre_version"
525
526EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
527                            $NO_UNDEFINED -version-info libpcreposix_version"
528
529EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
530                          $NO_UNDEFINED -version-info libpcrecpp_version \
531                          $EXPORT_ALL_SYMBOLS"
532
533AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
534AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
535AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
536
537# When we run 'make distcheck', use these arguments.
538DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
539AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
540
541# Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
542# specified, the relevant library is available. If so, add it to LIBS.
543
544if test "$enable_pcregrep_libz" = "yes"; then
545  if test "$HAVE_ZLIB_H" != "1"; then
546    echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
547    exit 1
548  fi
549  if test "$HAVE_LIBZ" != "1"; then
550    echo "** Cannot --enable-pcregrep-libz because libz was not found"
551    exit 1
552  fi
553  if test "$LIBS" = ""; then LIBS=-lz; else LIBS="$LIBS -lz"; fi
554fi
555
556if test "$enable_pcregrep_libbz2" = "yes"; then
557  if test "$HAVE_BZLIB_H" != "1"; then
558    echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
559    exit 1
560  fi
561  if test "$HAVE_LIBBZ2" != "1"; then
562    echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
563    exit 1
564  fi
565  if test "$LIBS" = ""; then LIBS=-lbz2; else LIBS="$LIBS -lbz2"; fi
566fi
567
568# Similarly for --enable-pcretest-readline
569
570if test "$enable_pcretest_libreadline" = "yes"; then
571  if test "$HAVE_READLINE_H" != "1"; then
572    echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
573    exit 1
574  fi
575  if test "$HAVE_HISTORY_H" != "1"; then
576    echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
577    exit 1
578  fi
579  if test "$LIBS" = ""; then LIBS=-lreadline; else LIBS="$LIBS -lreadline"; fi
580fi
581
582# Produce these files, in addition to config.h.
583AC_CONFIG_FILES(
584	Makefile
585	libpcre.pc
586	libpcrecpp.pc
587	pcre-config
588	pcre.h
589	pcre_stringpiece.h
590	pcrecpparg.h
591)
592
593# Make the generated script files executable.
594AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
595
596# Make sure that pcre_chartables.c is removed in case the method for
597# creating it was changed by reconfiguration.
598AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
599
600AC_OUTPUT
601
602# Print out a nice little message after configure is run displaying your
603# chosen options.
604
605cat <<EOF
606
607$PACKAGE-$VERSION configuration summary:
608
609    Install prefix .................. : ${prefix}
610    C preprocessor .................. : ${CPP}
611    C compiler ...................... : ${CC}
612    C++ preprocessor ................ : ${CXXCPP}
613    C++ compiler .................... : ${CXX}
614    Linker .......................... : ${LD}
615    C preprocessor flags ............ : ${CPPFLAGS}
616    C compiler flags ................ : ${CFLAGS}
617    C++ compiler flags .............. : ${CXXFLAGS}
618    Linker flags .................... : ${LDFLAGS}
619    Extra libraries ................. : ${LIBS}
620
621    Build C++ library ............... : ${enable_cpp}
622    Enable UTF-8 support ............ : ${enable_utf8}
623    Unicode properties .............. : ${enable_unicode_properties}
624    Newline char/sequence ........... : ${enable_newline}
625    \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
626    EBCDIC coding ................... : ${enable_ebcdic}
627    Rebuild char tables ............. : ${enable_rebuild_chartables}
628    Use stack recursion ............. : ${enable_stack_for_recursion}
629    POSIX mem threshold ............. : ${with_posix_malloc_threshold}
630    Internal link size .............. : ${with_link_size}
631    Match limit ..................... : ${with_match_limit}
632    Match limit recursion ........... : ${with_match_limit_recursion}
633    Build shared libs ............... : ${enable_shared}
634    Build static libs ............... : ${enable_static}
635    Link pcregrep with libz ......... : ${enable_pcregrep_libz}
636    Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
637    Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
638
639EOF
640
641dnl end configure.ac