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revision 89 by nigel, Sat Feb 24 21:41:27 2007 UTC revision 842 by ph10, Sat Dec 31 15:19:04 2011 UTC
# Line 1  Line 1 
1  dnl Process this file with autoconf to produce a configure script.  dnl Process this file with autoconf to produce a configure script.
2    
3  dnl This configure.in file has been hacked around quite a lot as a result of  dnl NOTE FOR MAINTAINERS: Do not use minor version numbers 08 or 09 because
4  dnl patches that various people have sent to me (PH). Sometimes the information  dnl the leading zeros may cause them to be treated as invalid octal constants
5  dnl I get is contradictory. I've tried to put in comments that explain things,  dnl if a PCRE user writes code that uses PCRE_MINOR as a number. There is now
6  dnl but in some cases the information is second-hand and I have no way of  dnl a check further down that throws an error if 08 or 09 are used.
7  dnl verifying it. I am not an autoconf or libtool expert!  
8    dnl The PCRE_PRERELEASE feature is for identifying release candidates. It might
9    dnl be defined as -RC2, for example. For real releases, it should be empty.
10    
11    m4_define(pcre_major, [8])
12    m4_define(pcre_minor, [30])
13    m4_define(pcre_prerelease, [-PT1])
14    m4_define(pcre_date, [2012-01-01])
15    
16    # Libtool shared library interface versions (current:revision:age)
17    m4_define(libpcre_version, [0:1:0])
18    m4_define(libpcreposix_version, [0:0:0])
19    m4_define(libpcrecpp_version, [0:0:0])
20    
21  dnl This is required at the start; the name is the name of a file  AC_PREREQ(2.57)
22  dnl it should be seeing, to verify it is in the same directory.  AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
23    AC_CONFIG_SRCDIR([pcre.h.in])
24    AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
25    AC_CONFIG_HEADERS(config.h)
26    
27    # This was added at the suggestion of libtoolize (03-Jan-10)
28    AC_CONFIG_MACRO_DIR([m4])
29    
30    # The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
31    # "-g" for any other compiler. There doesn't seem to be a standard way of
32    # getting rid of the -g (which I don't think is needed for a production
33    # library). This fudge seems to achieve the necessary. First, we remember the
34    # externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
35    # AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
36    # set, they will be set to Autoconf's defaults. Afterwards, if the original
37    # values were not set, remove the -g from the Autoconf defaults.
38    # (PH 02-May-07)
39    
40  AC_INIT(dftables.c)  remember_set_CFLAGS="$CFLAGS"
41  AC_CONFIG_SRCDIR([pcre.h])  remember_set_CXXFLAGS="$CXXFLAGS"
42    
43  dnl A safety precaution  AC_PROG_CC
44    AC_PROG_CXX
45    
46  AC_PREREQ(2.57)  if test "x$remember_set_CFLAGS" = "x"
47    then
48      if test "$CFLAGS" = "-g -O2"
49      then
50        CFLAGS="-O2"
51      elif test "$CFLAGS" = "-g"
52      then
53        CFLAGS=""
54      fi
55    fi
56    
57  dnl Arrange to build config.h from config.h.in.  if test "x$remember_set_CXXFLAGS" = "x"
58  dnl Manual says this macro should come right after AC_INIT.  then
59  AC_CONFIG_HEADER(config.h)    if test "$CXXFLAGS" = "-g -O2"
60      then
61        CXXFLAGS="-O2"
62      elif test "$CXXFLAGS" = "-g"
63      then
64        CXXFLAGS=""
65      fi
66    fi
67    
68  dnl Default values for miscellaneous macros  # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
69    # Check for that case, and just disable c++ code if g++ doesn't run.
70    AC_LANG_PUSH(C++)
71    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],, CXX=""; CXXCP=""; CXXFLAGS="")
72    AC_LANG_POP
73    
74  POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=10  # Check for a 64-bit integer type
75    AC_TYPE_INT64_T
76    
77  dnl Provide versioning information for libtool shared libraries that  AC_PROG_INSTALL
78  dnl are built by default on Unix systems.  AC_LIBTOOL_WIN32_DLL
79    LT_INIT
80    AC_PROG_LN_S
81    
82  PCRE_LIB_VERSION=0:1:0  PCRE_MAJOR="pcre_major"
83  PCRE_POSIXLIB_VERSION=0:0:0  PCRE_MINOR="pcre_minor"
84  PCRE_CPPLIB_VERSION=0:0:0  PCRE_PRERELEASE="pcre_prerelease"
85    PCRE_DATE="pcre_date"
86    
87  dnl Find the PCRE version from the pcre.h file. The PCRE_VERSION variable is  if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09"
88  dnl substituted in pcre-config.in.  then
89      echo "***"
90      echo "*** Minor version number $PCRE_MINOR must not be used. ***"
91      echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***"
92      echo "***"
93      exit 1
94    fi
95    
96  PCRE_MAJOR=`grep '#define PCRE_MAJOR' ${srcdir}/pcre.h | cut -c 29-`  AC_SUBST(PCRE_MAJOR)
97  PCRE_MINOR=`grep '#define PCRE_MINOR' ${srcdir}/pcre.h | cut -c 29-`  AC_SUBST(PCRE_MINOR)
98  PCRE_PRERELEASE=`grep '#define PCRE_PRERELEASE' ${srcdir}/pcre.h | cut -c 29-`  AC_SUBST(PCRE_PRERELEASE)
99  PCRE_VERSION=${PCRE_MAJOR}.${PCRE_MINOR}${PCRE_PRERELEASE}  AC_SUBST(PCRE_DATE)
100    
101    # Set a more sensible default value for $(htmldir).
102    if test "x$htmldir" = 'x${docdir}'
103    then
104      htmldir='${docdir}/html'
105    fi
106    
107  dnl Handle --disable-cpp  # Handle --disable-pcre8 (enabled by default)
108    AC_ARG_ENABLE(pcre8,
109                  AS_HELP_STRING([--disable-pcre8],
110                                 [enable 8 bit character support]),
111                  , enable_pcre8=unset)
112    
113    # Handle --enable-pcre16 (disabled by default)
114    AC_ARG_ENABLE(pcre16,
115                  AS_HELP_STRING([--enable-pcre16],
116                                 [enable 16 bit character support]),
117                  , enable_pcre16=unset)
118    
119    # Handle --disable-cpp. The substitution of enable_cpp is needed for use in
120    # pcre-config.
121  AC_ARG_ENABLE(cpp,  AC_ARG_ENABLE(cpp,
122  [  --disable-cpp           disable C++ support],                AS_HELP_STRING([--disable-cpp],
123  want_cpp="$enableval", want_cpp=yes)                               [disable C++ support]),
124                  , enable_cpp=unset)
125    AC_SUBST(enable_cpp)
126    
127    # Handle --enable-jit (disabled by default)
128    AC_ARG_ENABLE(jit,
129                  AS_HELP_STRING([--enable-jit],
130                                 [enable Just-In-Time compiling support]),
131                  , enable_jit=no)
132    
133    # Handle --disable-pcregrep-jit (enabled by default)
134    AC_ARG_ENABLE(pcregrep-jit,
135                  AS_HELP_STRING([--disable-pcregrep-jit],
136                                 [disable JIT support in pcregrep]),
137                  , enable_pcregrep_jit=yes)
138    
139    # Handle --enable-rebuild-chartables
140    AC_ARG_ENABLE(rebuild-chartables,
141                  AS_HELP_STRING([--enable-rebuild-chartables],
142                                 [rebuild character tables in current locale]),
143                  , enable_rebuild_chartables=no)
144    
145  dnl Checks for programs.  # Handle --enable-utf8 (disabled by default)
146    AC_ARG_ENABLE(utf8,
147                  AS_HELP_STRING([--enable-utf8],
148                                 [another name for --enable-utf. Kept only for compatibility reasons]),
149                  , enable_utf8=unset)
150    
151    # Handle --enable-utf (disabled by default)
152    AC_ARG_ENABLE(utf,
153                  AS_HELP_STRING([--enable-utf],
154                                 [enable UTF-8/16 support (incompatible with --enable-ebcdic)]),
155                  , enable_utf=unset)
156    
157  AC_PROG_CC  # Handle --enable-unicode-properties
158    AC_ARG_ENABLE(unicode-properties,
159                  AS_HELP_STRING([--enable-unicode-properties],
160                                 [enable Unicode properties support (implies --enable-utf)]),
161                  , enable_unicode_properties=no)
162    
163    # Handle --enable-newline=NL
164    dnl AC_ARG_ENABLE(newline,
165    dnl               AS_HELP_STRING([--enable-newline=NL],
166    dnl                              [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
167    dnl               , enable_newline=lf)
168    
169  dnl Test for C++ for the C++ wrapper libpcrecpp. It seems, however, that  # Separate newline options
170  dnl AC_PROC_CXX will set $CXX to "g++" when no C++ compiler is installed, even  ac_pcre_newline=lf
171  dnl though that is completely bogus. (This may happen only on certain systems  AC_ARG_ENABLE(newline-is-cr,
172  dnl with certain versions of autoconf, of course.) An attempt to include this                AS_HELP_STRING([--enable-newline-is-cr],
173  dnl test inside a check for want_cpp was criticized by a libtool expert, who                               [use CR as newline character]),
174  dnl tells me that it isn't allowed.                ac_pcre_newline=cr)
175    AC_ARG_ENABLE(newline-is-lf,
176                  AS_HELP_STRING([--enable-newline-is-lf],
177                                 [use LF as newline character (default)]),
178                  ac_pcre_newline=lf)
179    AC_ARG_ENABLE(newline-is-crlf,
180                  AS_HELP_STRING([--enable-newline-is-crlf],
181                                 [use CRLF as newline sequence]),
182                  ac_pcre_newline=crlf)
183    AC_ARG_ENABLE(newline-is-anycrlf,
184                  AS_HELP_STRING([--enable-newline-is-anycrlf],
185                                 [use CR, LF, or CRLF as newline sequence]),
186                  ac_pcre_newline=anycrlf)
187    AC_ARG_ENABLE(newline-is-any,
188                  AS_HELP_STRING([--enable-newline-is-any],
189                                 [use any valid Unicode newline sequence]),
190                  ac_pcre_newline=any)
191    enable_newline="$ac_pcre_newline"
192    
193    # Handle --enable-bsr-anycrlf
194    AC_ARG_ENABLE(bsr-anycrlf,
195                  AS_HELP_STRING([--enable-bsr-anycrlf],
196                                 [\R matches only CR, LF, CRLF by default]),
197                  , enable_bsr_anycrlf=no)
198    
199  AC_PROG_CXX  # Handle --enable-ebcdic
200    AC_ARG_ENABLE(ebcdic,
201                  AS_HELP_STRING([--enable-ebcdic],
202                                 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
203                  , enable_ebcdic=no)
204    
205  dnl The icc compiler has the same options as gcc, so let the rest of the  # Handle --disable-stack-for-recursion
206  dnl configure script think it has gcc when setting up dnl options etc.  AC_ARG_ENABLE(stack-for-recursion,
207  dnl This is a nasty hack which no longer seems necessary with the update                AS_HELP_STRING([--disable-stack-for-recursion],
208  dnl to the latest libtool files, so I have commented it out.                               [don't use stack recursion when matching]),
209  dnl                , enable_stack_for_recursion=yes)
210  dnl if test "$CC" = "icc" ; then GCC=yes ; fi  
211    # Handle --enable-pcregrep-libz
212    AC_ARG_ENABLE(pcregrep-libz,
213                  AS_HELP_STRING([--enable-pcregrep-libz],
214                                 [link pcregrep with libz to handle .gz files]),
215                  , enable_pcregrep_libz=no)
216    
217    # Handle --enable-pcregrep-libbz2
218    AC_ARG_ENABLE(pcregrep-libbz2,
219                  AS_HELP_STRING([--enable-pcregrep-libbz2],
220                                 [link pcregrep with libbz2 to handle .bz2 files]),
221                  , enable_pcregrep_libbz2=no)
222    
223    # Handle --with-pcregrep-bufsize=N
224    AC_ARG_WITH(pcregrep-bufsize,
225                  AS_HELP_STRING([--with-pcregrep-bufsize=N],
226                                 [pcregrep buffer size (default=20480)]),
227                  , with_pcregrep_bufsize=20480)
228    
229    # Handle --enable-pcretest-libreadline
230    AC_ARG_ENABLE(pcretest-libreadline,
231                  AS_HELP_STRING([--enable-pcretest-libreadline],
232                                 [link pcretest with libreadline]),
233                  , enable_pcretest_libreadline=no)
234    
235  AC_PROG_INSTALL  # Handle --with-posix-malloc-threshold=NBYTES
236  AC_LIBTOOL_WIN32_DLL  AC_ARG_WITH(posix-malloc-threshold,
237  AC_PROG_LIBTOOL              AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
238                               [threshold for POSIX malloc usage (default=10)]),
239                , with_posix_malloc_threshold=10)
240    
241  dnl We need to find a compiler for compiling a program to run on the local host  # Handle --with-link-size=N
242  dnl while building. It needs to be different from CC when cross-compiling.  AC_ARG_WITH(link-size,
243  dnl There is a macro called AC_PROG_CC_FOR_BUILD in the GNU archive for              AS_HELP_STRING([--with-link-size=N],
244  dnl figuring this out automatically. Unfortunately, it does not work with the                             [internal link size (2, 3, or 4 allowed; default=2)]),
245  dnl latest versions of autoconf. So for the moment, we just default to the              , with_link_size=2)
 dnl same values as the "main" compiler. People who are cross-compiling will  
 dnl just have to adjust the Makefile by hand or set these values when they  
 dnl run "configure".  
   
 CC_FOR_BUILD=${CC_FOR_BUILD:-'$(CC)'}  
 CXX_FOR_BUILD=${CXX_FOR_BUILD:-'$(CXX)'}  
 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD:-'$(CFLAGS)'}  
 CPPFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD:-'$(CPPFLAGS)'}  
 CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD:-'$(CXXFLAGS)'}  
 BUILD_EXEEXT=${BUILD_EXEEXT:-'$(EXEEXT)'}  
 BUILD_OBJEXT=${BUILD_OBJEXT:-'$(OBJEXT)'}  
246    
247  dnl Checks for header files.  # Handle --with-match-limit=N
248    AC_ARG_WITH(match-limit,
249                AS_HELP_STRING([--with-match-limit=N],
250                               [default limit on internal looping (default=10000000)]),
251                , with_match_limit=10000000)
252    
253    # Handle --with-match-limit_recursion=N
254    #
255    # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
256    # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
257    # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
258    # different numeric value (or even the same numeric value as MATCH_LIMIT,
259    # though no longer defined in terms of the latter).
260    #
261    AC_ARG_WITH(match-limit-recursion,
262                AS_HELP_STRING([--with-match-limit-recursion=N],
263                               [default limit on internal recursion (default=MATCH_LIMIT)]),
264                , with_match_limit_recursion=MATCH_LIMIT)
265    
266  AC_HEADER_STDC  # Copy enable_utf8 value to enable_utf for compatibility reasons
267  AC_CHECK_HEADERS(limits.h)  if test "x$enable_utf8" != "xunset"
268    then
269      if test "x$enable_utf" != "xunset"
270      then
271        AC_MSG_ERROR([--enable/disable-utf8 is kept only for compatibility reasons and its value is copied to --enable/disable-utf. Newer code must use --enable/disable-utf alone.])
272      fi
273      enable_utf=$enable_utf8
274    fi
275    
276    # Set the default value for pcre8
277    if test "x$enable_pcre8" = "xunset"
278    then
279      enable_pcre8=yes
280    fi
281    
282    # Set the default value for pcre16
283    if test "x$enable_pcre16" = "xunset"
284    then
285      enable_pcre16=no
286    fi
287    
288    # Make sure enable_pcre8 or enable_pcre16 was set
289    if test "x$enable_pcre8$enable_pcre16" = "xnono"
290    then
291      AC_MSG_ERROR([Either 8 or 16 bit (or both) pcre library must be enabled])
292    fi
293    
294    # Make sure that if enable_unicode_properties was set, that UTF support is enabled.
295    if test "x$enable_unicode_properties" = "xyes"
296    then
297      if test "x$enable_utf" = "xno"
298      then
299        AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support])
300      fi
301      enable_utf=yes
302    fi
303    
304    # enable_utf is disabled by default.
305    if test "x$enable_utf" = "xunset"
306    then
307      enable_utf=no
308    fi
309    
310    # enable_cpp copies the value of enable_pcre8 by default
311    if test "x$enable_cpp" = "xunset"
312    then
313      enable_cpp=$enable_pcre8
314    fi
315    
316    # Make sure that if enable_cpp was set, that enable_pcre8 support is enabled
317    if test "x$enable_cpp" = "xyes"
318    then
319      if test "x$enable_pcre8" = "xno"
320      then
321        AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters])
322      fi
323    fi
324    
325    # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
326    # Also check that UTF support is not requested, because PCRE cannot handle
327    # EBCDIC and UTF in the same build. To do so it would need to use different
328    # character constants depending on the mode.
329    #
330    if test "x$enable_ebcdic" = "xyes"
331    then
332      enable_rebuild_chartables=yes
333      if test "x$enable_utf" = "xyes"
334      then
335        AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time])
336      fi
337    fi
338    
339    # Convert the newline identifier into the appropriate integer value.
340    case "$enable_newline" in
341      lf)      ac_pcre_newline_value=10   ;;
342      cr)      ac_pcre_newline_value=13   ;;
343      crlf)    ac_pcre_newline_value=3338 ;;
344      anycrlf) ac_pcre_newline_value=-2   ;;
345      any)     ac_pcre_newline_value=-1   ;;
346      *)
347      AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
348      ;;
349    esac
350    
351    # Check argument to --with-link-size
352    case "$with_link_size" in
353      2|3|4) ;;
354      *)
355      AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
356      ;;
357    esac
358    
359  dnl The files below are C++ header files. One person told me (PH) that  AH_TOP([
360  dnl AC_LANG_CPLUSPLUS unsets CXX if it was explicitly set to something which  /* On Unix-like systems config.h.in is converted by "configure" into config.h.
361  dnl doesn't work. However, this doesn't always seem to be the case.  Some other environments also support the use of "configure". PCRE is written in
362    Standard C, but there are a few non-standard things it can cope with, allowing
363    it to run on SunOS4 and other "close to standard" systems.
364    
365    If you are going to build PCRE "by hand" on a system without "configure" you
366    should copy the distributed config.h.generic to config.h, and then set up the
367    macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
368    all of your compile commands, so that config.h is included at the start of
369    every source.
370    
371    Alternatively, you can avoid editing by using -D on the compiler command line
372    to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
373    
374    PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
375    HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
376    them both to 0; an emulation function will be used. */])
377    
378  if test "x$want_cpp" = "xyes" -a -n "$CXX"  # Checks for header files.
379    AC_HEADER_STDC
380    AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
381    
382    # The files below are C++ header files.
383    pcre_have_type_traits="0"
384    pcre_have_bits_type_traits="0"
385    if test "x$enable_cpp" = "xyes" -a -n "$CXX"
386  then  then
387  AC_LANG_SAVE  AC_LANG_PUSH(C++)
 AC_LANG_CPLUSPLUS  
388    
389  dnl We could be more clever here, given we're doing AC_SUBST with this  # Older versions of pcre defined pcrecpp::no_arg, but in new versions
390  dnl (eg set a var to be the name of the include file we want).  But we're not  # it's called pcrecpp::RE::no_arg.  For backwards ABI compatibility,
391  dnl so it's easy to change back to 'regular' autoconf vars if we needed to.  # we want to make one an alias for the other.  Different systems do
392    # this in different ways.  Some systems, for instance, can do it via
393    # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
394    OLD_LDFLAGS="$LDFLAGS"
395    for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
396                "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
397      AC_MSG_CHECKING([for alias support in the linker])
398      LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
399      # We try to run the linker with this new ld flag.  If the link fails,
400      # we give up and remove the new flag from LDFLAGS.
401      AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp {
402                                        class RE { static int no_arg; };
403                                        int RE::no_arg;
404                                      }],
405                                     [])],
406                     [AC_MSG_RESULT([yes]);
407                      EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
408                      break;],
409                     AC_MSG_RESULT([no]))
410    done
411    LDFLAGS="$OLD_LDFLAGS"
412    
413    # We could be more clever here, given we're doing AC_SUBST with this
414    # (eg set a var to be the name of the include file we want). But we're not
415    # so it's easy to change back to 'regular' autoconf vars if we needed to.
416  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
417                           [pcre_have_cpp_headers="0"])                           [pcre_have_cpp_headers="0"])
418  AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],  AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"],
419                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
420  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
421                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
 dnl Using AC_SUBST eliminates the need to include config.h in a public .h file  
 AC_SUBST(pcre_have_bits_type_traits)  
 AC_SUBST(pcre_have_type_traits)  
 AC_LANG_RESTORE  
 fi  
422    
423  dnl From the above, we now have enough info to know if C++ is fully installed  # (This isn't c++-specific, but is only used in pcrecpp.cc, so try this
424  if test "x$want_cpp" = "xyes" -a -n "$CXX" -a "$pcre_have_cpp_headers" = 1; then  # in a c++ context.  This matters becuase strtoimax is C99 and may not
425    MAYBE_CPP_TARGETS='$(CPP_TARGETS)'  # be supported by the C++ compiler.)
426    HAVE_CPP=  # Figure out how to create a longlong from a string: strtoll and
427    # equiv.  It's not enough to call AC_CHECK_FUNCS: hpux has a
428    # strtoll, for instance, but it only takes 2 args instead of 3!
429    # We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex.
430    AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.])
431    AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.])
432    AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.])
433    AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.])
434    have_strto_fn=0
435    for fn in strtoq strtoll _strtoi64 strtoimax; do
436      AC_MSG_CHECKING([for $fn])
437      if test "$fn" = strtoimax; then
438        include=stdint.h
439      else
440        include=stdlib.h
441      fi
442      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>],
443                                        [char* e; return $fn("100", &e, 10)])],
444                        [AC_MSG_RESULT(yes)
445                         AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1,
446                                            [Define to 1 if you have `$fn'.])
447                         have_strto_fn=1
448                         break],
449                        [AC_MSG_RESULT(no)])
450    done
451    
452    if test "$have_strto_fn" = 1; then
453      AC_CHECK_TYPES([long long],
454                     [pcre_have_long_long="1"],
455                     [pcre_have_long_long="0"])
456      AC_CHECK_TYPES([unsigned long long],
457                     [pcre_have_ulong_long="1"],
458                     [pcre_have_ulong_long="0"])
459  else  else
460    MAYBE_CPP_TARGETS=    pcre_have_long_long="0"
461    HAVE_CPP="#"    pcre_have_ulong_long="0"
462  fi  fi
463  AC_SUBST(MAYBE_CPP_TARGETS)  AC_SUBST(pcre_have_long_long)
464  AC_SUBST(HAVE_CPP)  AC_SUBST(pcre_have_ulong_long)
465    
466  dnl Checks for typedefs, structures, and compiler characteristics.  AC_LANG_POP
467    fi
468    # Using AC_SUBST eliminates the need to include config.h in a public .h file
469    AC_SUBST(pcre_have_type_traits)
470    AC_SUBST(pcre_have_bits_type_traits)
471    
472    # Conditional compilation
473    AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes")
474    AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
475    AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
476    AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
477    AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
478    AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
479    
480    # Checks for typedefs, structures, and compiler characteristics.
481    
482  AC_C_CONST  AC_C_CONST
483  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
484    
485  AC_CHECK_TYPES([long long], [pcre_have_long_long="1"], [pcre_have_long_long="0"])  # Checks for library functions.
 AC_CHECK_TYPES([unsigned long long], [pcre_have_ulong_long="1"], [pcre_have_ulong_long="0"])  
 AC_SUBST(pcre_have_long_long)  
 AC_SUBST(pcre_have_ulong_long)  
486    
487  dnl Checks for library functions.  AC_CHECK_FUNCS(bcopy memmove strerror)
488    
489  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  # Check for the availability of libz (aka zlib)
490    
491  dnl Handle --enable-utf8  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
492    AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
493    
494  AC_ARG_ENABLE(utf8,  # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
495  [  --enable-utf8           enable UTF8 support],  # as for libz. However, this had the following problem, diagnosed and fixed by
496  if test "$enableval" = "yes"; then  # a user:
497    UTF8=-DSUPPORT_UTF8  #
498  fi  #   - libbz2 uses the Pascal calling convention (WINAPI) for the functions
499  )  #     under Win32.
500    #   - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
501    #     therefore missing the function definition.
502    #   - The compiler thus generates a "C" signature for the test function.
503    #   - The linker fails to find the "C" function.
504    #   - PCRE fails to configure if asked to do so against libbz2.
505    #
506    # Solution:
507    #
508    #   - Replace the AC_CHECK_LIB test with a custom test.
509    
510    AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
511    # Original test
512    # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
513    #
514    # Custom test follows
515    
516    AC_MSG_CHECKING([for libbz2])
517    OLD_LIBS="$LIBS"
518    LIBS="$LIBS -lbz2"
519    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
520    #ifdef HAVE_BZLIB_H
521    #include <bzlib.h>
522    #endif]],
523    [[return (int)BZ2_bzopen("conftest", "rb");]])],
524    [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
525    AC_MSG_RESULT([no]))
526    LIBS="$OLD_LIBS"
527    
528    # Check for the availabiity of libreadline
529    
530    AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
531    AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
532    AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
533    
534  dnl Handle --enable-unicode-properties  # This facilitates -ansi builds under Linux
535    dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
536    
537  AC_ARG_ENABLE(unicode-properties,  PCRE_STATIC_CFLAG=""
538  [  --enable-unicode-properties  enable Unicode properties support],  if test "x$enable_shared" = "xno" ; then
539  if test "$enableval" = "yes"; then    AC_DEFINE([PCRE_STATIC], [1], [
540    UCP=-DSUPPORT_UCP      Define if linking statically (TODO: make nice with Libtool)])
541      PCRE_STATIC_CFLAG="-DPCRE_STATIC"
542  fi  fi
543  )  AC_SUBST(PCRE_STATIC_CFLAG)
544    
545  dnl Handle --enable-newline-is-cr  # Here is where pcre specific defines are handled
546    
547  AC_ARG_ENABLE(newline-is-cr,  if test "$enable_pcre8" = "yes"; then
548  [  --enable-newline-is-cr  use CR as the newline character],    AC_DEFINE([SUPPORT_PCRE8], [], [
549  if test "$enableval" = "yes"; then      Define to enable the 8 bit PCRE library.])
   NEWLINE=-DNEWLINE=13  
550  fi  fi
 )  
551    
552  dnl Handle --enable-newline-is-lf  if test "$enable_pcre16" = "yes"; then
553      AC_DEFINE([SUPPORT_PCRE16], [], [
554        Define to enable the 16 bit PCRE library.])
555    fi
556    
557  AC_ARG_ENABLE(newline-is-lf,  if test "$enable_jit" = "yes"; then
558  [  --enable-newline-is-lf  use LF as the newline character],    AC_DEFINE([SUPPORT_JIT], [], [
559  if test "$enableval" = "yes"; then      Define to enable support for Just-In-Time compiling.])
560    NEWLINE=-DNEWLINE=10  else
561      enable_pcregrep_jit="no"
562  fi  fi
 )  
563    
564  dnl Handle --enable-ebcdic  if test "$enable_pcregrep_jit" = "yes"; then
565      AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
566        Define to enable JIT support in pcregrep.])
567    fi
568    
569  AC_ARG_ENABLE(ebcdic,  if test "$enable_utf" = "yes"; then
570  [  --enable-ebcdic         assume EBCDIC coding rather than ASCII],    AC_DEFINE([SUPPORT_UTF], [], [
571  if test "$enableval" == "yes"; then      Define to enable support for the UTF-8/16 Unicode encoding. This
572    EBCDIC=-DEBCDIC=1      will work even in an EBCDIC environment, but it is incompatible
573        with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
574        code *or* ASCII/UTF-8/16, but not both at once.])
575    fi
576    
577    if test "$enable_unicode_properties" = "yes"; then
578      AC_DEFINE([SUPPORT_UCP], [], [
579        Define to enable support for Unicode properties.])
580  fi  fi
 )  
581    
582  dnl Handle --disable-stack-for-recursion  if test "$enable_stack_for_recursion" = "no"; then
583      AC_DEFINE([NO_RECURSE], [], [
584        PCRE uses recursive function calls to handle backtracking while
585        matching. This can sometimes be a problem on systems that have
586        stacks of limited size. Define NO_RECURSE to get a version that
587        doesn't use recursion in the match() function; instead it creates
588        its own stack by steam using pcre_recurse_malloc() to obtain memory
589        from the heap. For more detail, see the comments and other stuff
590        just above the match() function. On systems that support it,
591        "configure" can be used to set this in the Makefile
592        (use --disable-stack-for-recursion).])
593    fi
594    
595  AC_ARG_ENABLE(stack-for-recursion,  if test "$enable_pcregrep_libz" = "yes"; then
596  [  --disable-stack-for-recursion  disable use of stack recursion when matching],    AC_DEFINE([SUPPORT_LIBZ], [], [
597  if test "$enableval" = "no"; then      Define to allow pcregrep to be linked with libz, so that it is
598    NO_RECURSE=-DNO_RECURSE      able to handle .gz files.])
599  fi  fi
 )  
600    
601  dnl There doesn't seem to be a straightforward way of having parameters  if test "$enable_pcregrep_libbz2" = "yes"; then
602  dnl that set values, other than fudging the --with thing. So that's what    AC_DEFINE([SUPPORT_LIBBZ2], [], [
603  dnl I've done.      Define to allow pcregrep to be linked with libbz2, so that it is
604        able to handle .bz2 files.])
605    fi
606    
607  dnl Handle --with-posix-malloc-threshold=n  if test $with_pcregrep_bufsize -lt 8192 ; then
608      with_pcregrep_bufsize="8192"
609    fi
610    
611  AC_ARG_WITH(posix-malloc-threshold,  AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
612  [  --with-posix-malloc-threshold=10  threshold for POSIX malloc usage],    The value of PCREGREP_BUFSIZE determines the size of buffer used by
613    POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=$withval    pcregrep to hold parts of the file it is searching. On systems that
614  )    support it, "configure" can be used to override the default, which is
615      8192. This is also the minimum value. The actual amount of memory used by
616      pcregrep is three times this number, because it allows for the buffering of
617      "before" and "after" lines.])
618    
619    if test "$enable_pcretest_libreadline" = "yes"; then
620      AC_DEFINE([SUPPORT_LIBREADLINE], [], [
621        Define to allow pcretest to be linked with libreadline.])
622    fi
623    
624  dnl Handle --with-link-size=n  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
625      The value of NEWLINE determines the newline character sequence. On
626      systems that support it, "configure" can be used to override the
627      default, which is 10. The possible values are 10 (LF), 13 (CR),
628      3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
629    
630    if test "$enable_bsr_anycrlf" = "yes"; then
631      AC_DEFINE([BSR_ANYCRLF], [], [
632        By default, the \R escape sequence matches any Unicode line ending
633        character or sequence of characters. If BSR_ANYCRLF is defined, this is
634        changed so that backslash-R matches only CR, LF, or CRLF. The build-
635        time default can be overridden by the user of PCRE at runtime. On
636        systems that support it, "configure" can be used to override the
637        default.])
638    fi
639    
640  AC_ARG_WITH(link-size,  AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
641  [  --with-link-size=2    internal link size (2, 3, or 4 allowed)],    The value of LINK_SIZE determines the number of bytes used to store
642    LINK_SIZE=-DLINK_SIZE=$withval    links as offsets within the compiled regex. The default is 2, which
643  )    allows for compiled patterns up to 64K long. This covers the vast
644      majority of cases. However, PCRE can also be compiled to use 3 or 4
645      bytes instead. This allows for longer patterns in extreme cases. On
646      systems that support it, "configure" can be used to override this default.])
647    
648    AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
649      When calling PCRE via the POSIX interface, additional working storage
650      is required for holding the pointers to capturing substrings because
651      PCRE requires three integers per substring, whereas the POSIX
652      interface provides only two. If the number of expected substrings is
653      small, the wrapper function uses space on the stack, because this is
654      faster than using malloc() for each call. The threshold above which
655      the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
656      systems that support it, "configure" can be used to override this
657      default.])
658    
659    AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
660      The value of MATCH_LIMIT determines the default number of times the
661      internal match() function can be called during a single execution of
662      pcre_exec(). There is a runtime interface for setting a different
663      limit. The limit exists in order to catch runaway regular
664      expressions that take for ever to determine that they do not match.
665      The default is set very large so that it does not accidentally catch
666      legitimate cases. On systems that support it, "configure" can be
667      used to override this default default.])
668    
669    AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
670      The above limit applies to all calls of match(), whether or not they
671      increase the recursion depth. In some environments it is desirable
672      to limit the depth of recursive calls of match() more strictly, in
673      order to restrict the maximum amount of stack (or heap, if
674      NO_RECURSE is defined) that is used. The value of
675      MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
676      have any useful effect, it must be less than the value of
677      MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
678      There is a runtime method for setting a different limit. On systems
679      that support it, "configure" can be used to override the default.])
680    
681    AC_DEFINE([MAX_NAME_SIZE], [32], [
682      This limit is parameterized just in case anybody ever wants to
683      change it. Care must be taken if it is increased, because it guards
684      against integer overflow caused by enormously large patterns.])
685    
686    AC_DEFINE([MAX_NAME_COUNT], [10000], [
687      This limit is parameterized just in case anybody ever wants to
688      change it. Care must be taken if it is increased, because it guards
689      against integer overflow caused by enormously large patterns.])
690    
691    AH_VERBATIM([PCRE_EXP_DEFN], [
692    /* If you are compiling for a system other than a Unix-like system or
693       Win32, and it needs some magic to be inserted before the definition
694       of a function that is exported by the library, define this macro to
695       contain the relevant magic. If you do not define this macro, it
696       defaults to "extern" for a C compiler and "extern C" for a C++
697       compiler on non-Win32 systems. This macro apears at the start of
698       every exported function that is part of the external API. It does
699       not appear on functions that are "external" in the C sense, but
700       which are internal to the library. */
701    #undef PCRE_EXP_DEFN])
702    
703    if test "$enable_ebcdic" = "yes"; then
704      AC_DEFINE_UNQUOTED([EBCDIC], [], [
705        If you are compiling for a system that uses EBCDIC instead of ASCII
706        character codes, define this macro as 1. On systems that can use
707        "configure", this can be done via --enable-ebcdic. PCRE will then
708        assume that all input strings are in EBCDIC. If you do not define
709        this macro, PCRE will assume input strings are ASCII or UTF-8/16
710        Unicode. It is not possible to build a version of PCRE that
711        supports both EBCDIC and UTF-8/16.])
712    fi
713    
714  dnl Handle --with-match-limit=n  # Platform specific issues
715    NO_UNDEFINED=
716    EXPORT_ALL_SYMBOLS=
717    case $host_os in
718      cygwin* | mingw* )
719        if test X"$enable_shared" = Xyes; then
720          NO_UNDEFINED="-no-undefined"
721          EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
722        fi
723        ;;
724    esac
725    
726  AC_ARG_WITH(match-limit,  # The extra LDFLAGS for each particular library
727  [  --with-match-limit=10000000  default limit on internal looping],  # (Note: The libpcre*_version bits are m4 variables, assigned above)
   MATCH_LIMIT=-DMATCH_LIMIT=$withval  
 )  
728    
729  dnl Handle --with-match-limit_recursion=n  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
730                           $NO_UNDEFINED -version-info libpcre_version"
731    
732  AC_ARG_WITH(match-limit-recursion,  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
733  [  --with-match-limit-recursion=10000000  default limit on internal recursion],                              $NO_UNDEFINED -version-info libpcreposix_version"
   MATCH_LIMIT_RECURSION=-DMATCH_LIMIT_RECURSION=$withval  
 )  
734    
735  dnl Unicode character property support implies UTF-8 support  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
736                              $NO_UNDEFINED -version-info libpcrecpp_version \
737                              $EXPORT_ALL_SYMBOLS"
738    
739    AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
740    AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
741    AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
742    
743    # When we run 'make distcheck', use these arguments.
744    DISTCHECK_CONFIGURE_FLAGS="--enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties"
745    AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
746    
747    # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
748    # specified, the relevant library is available.
749    
750    if test "$enable_pcregrep_libz" = "yes"; then
751      if test "$HAVE_ZLIB_H" != "1"; then
752        echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
753        exit 1
754      fi
755      if test "$HAVE_LIBZ" != "1"; then
756        echo "** Cannot --enable-pcregrep-libz because libz was not found"
757        exit 1
758      fi
759      LIBZ="-lz"
760    fi
761    AC_SUBST(LIBZ)
762    
763  if test "$UCP" != "" ; then  if test "$enable_pcregrep_libbz2" = "yes"; then
764    UTF8=-DSUPPORT_UTF8    if test "$HAVE_BZLIB_H" != "1"; then
765        echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
766        exit 1
767      fi
768      if test "$HAVE_LIBBZ2" != "1"; then
769        echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
770        exit 1
771      fi
772      LIBBZ2="-lbz2"
773  fi  fi
774    AC_SUBST(LIBBZ2)
775    
776  dnl "Export" these variables  # Similarly for --enable-pcretest-readline
777    
778  AC_SUBST(BUILD_EXEEXT)  if test "$enable_pcretest_libreadline" = "yes"; then
779  AC_SUBST(BUILD_OBJEXT)    if test "$HAVE_READLINE_H" != "1"; then
780  AC_SUBST(CC_FOR_BUILD)      echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
781  AC_SUBST(CXX_FOR_BUILD)      exit 1
782  AC_SUBST(CFLAGS_FOR_BUILD)    fi
783  AC_SUBST(CXXFLAGS_FOR_BUILD)    if test "$HAVE_HISTORY_H" != "1"; then
784  AC_SUBST(CXXLDFLAGS)      echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
785  AC_SUBST(EBCDIC)      exit 1
786  AC_SUBST(HAVE_MEMMOVE)    fi
787  AC_SUBST(HAVE_STRERROR)    LIBREADLINE="-lreadline"
788  AC_SUBST(LINK_SIZE)  fi
789  AC_SUBST(MATCH_LIMIT)  AC_SUBST(LIBREADLINE)
 AC_SUBST(MATCH_LIMIT_RECURSION)  
 AC_SUBST(NEWLINE)  
 AC_SUBST(NO_RECURSE)  
 AC_SUBST(PCRE_LIB_VERSION)  
 AC_SUBST(PCRE_POSIXLIB_VERSION)  
 AC_SUBST(PCRE_CPPLIB_VERSION)  
 AC_SUBST(PCRE_VERSION)  
 AC_SUBST(POSIX_MALLOC_THRESHOLD)  
 AC_SUBST(UCP)  
 AC_SUBST(UTF8)  
790    
791  dnl Stuff to make MinGW work better. Special treatment is no longer  # Produce these files, in addition to config.h.
792  dnl needed for Cygwin.  AC_CONFIG_FILES(
793            Makefile
794            libpcre.pc
795            libpcre16.pc
796            libpcreposix.pc
797            libpcrecpp.pc
798            pcre-config
799            pcre.h
800            pcre_stringpiece.h
801            pcrecpparg.h
802    )
803    
804  case $host_os in  # Make the generated script files executable.
805  mingw* )  AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
     POSIX_OBJ=pcreposix.o  
     POSIX_LOBJ=pcreposix.lo  
     POSIX_LIB=  
     ON_WINDOWS=  
     NOT_ON_WINDOWS="#"  
     WIN_PREFIX=  
     ;;  
 * )  
     ON_WINDOWS="#"  
     NOT_ON_WINDOWS=  
     POSIX_OBJ=  
     POSIX_LOBJ=  
     POSIX_LIB=libpcreposix.la  
     WIN_PREFIX=  
     ;;  
 esac  
 AC_SUBST(WIN_PREFIX)  
 AC_SUBST(ON_WINDOWS)  
 AC_SUBST(NOT_ON_WINDOWS)  
 AC_SUBST(POSIX_OBJ)  
 AC_SUBST(POSIX_LOBJ)  
 AC_SUBST(POSIX_LIB)  
806    
807  if test "x$enable_shared" = "xno" ; then  # Make sure that pcre_chartables.c is removed in case the method for
808      AC_DEFINE([PCRE_STATIC],[1],[to link statically])  # creating it was changed by reconfiguration.
809  fi  AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
810    
811    AC_OUTPUT
812    
813    # Print out a nice little message after configure is run displaying your
814    # chosen options.
815    
816    cat <<EOF
817    
818    $PACKAGE-$VERSION configuration summary:
819    
820        Install prefix .................. : ${prefix}
821        C preprocessor .................. : ${CPP}
822        C compiler ...................... : ${CC}
823        C++ preprocessor ................ : ${CXXCPP}
824        C++ compiler .................... : ${CXX}
825        Linker .......................... : ${LD}
826        C preprocessor flags ............ : ${CPPFLAGS}
827        C compiler flags ................ : ${CFLAGS}
828        C++ compiler flags .............. : ${CXXFLAGS}
829        Linker flags .................... : ${LDFLAGS}
830        Extra libraries ................. : ${LIBS}
831    
832        Build 8 bit pcre library ........ : ${enable_pcre8}
833        Build 16 bit pcre library ....... : ${enable_pcre16}
834        Build C++ library ............... : ${enable_cpp}
835        Enable JIT compiling support .... : ${enable_jit}
836        Enable UTF-8/16 support ......... : ${enable_utf}
837        Unicode properties .............. : ${enable_unicode_properties}
838        Newline char/sequence ........... : ${enable_newline}
839        \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
840        EBCDIC coding ................... : ${enable_ebcdic}
841        Rebuild char tables ............. : ${enable_rebuild_chartables}
842        Use stack recursion ............. : ${enable_stack_for_recursion}
843        POSIX mem threshold ............. : ${with_posix_malloc_threshold}
844        Internal link size .............. : ${with_link_size}
845        Match limit ..................... : ${with_match_limit}
846        Match limit recursion ........... : ${with_match_limit_recursion}
847        Build shared libs ............... : ${enable_shared}
848        Build static libs ............... : ${enable_static}
849        Use JIT in pcregrep ............. : ${enable_pcregrep_jit}
850        Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
851        Link pcregrep with libz ......... : ${enable_pcregrep_libz}
852        Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
853        Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
854    
855    EOF
856    
857  dnl This must be last; it determines what files are written as well as config.h  dnl end configure.ac
 AC_OUTPUT(Makefile pcre-config:pcre-config.in libpcre.pc:libpcre.pc.in pcrecpparg.h:pcrecpparg.h.in pcre_stringpiece.h:pcre_stringpiece.h.in RunGrepTest:RunGrepTest.in RunTest:RunTest.in,[chmod a+x RunTest RunGrepTest pcre-config])  

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