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revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC revision 145 by ph10, Wed Apr 4 14:06:52 2007 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 major or minor version numbers with
4  dnl patches that various people have sent to me (PH). Sometimes the information  dnl leading zeros, because they may be treated as octal constants. The
5  dnl I get is contradictory. I've tried to put in comments that explain things,  dnl PCRE_PRERELEASE feature is for identifying release candidates. It might
6  dnl but in some cases the information is second-hand and I have no way of  dnl be defined as -RC2, for example. For real releases, it should be defined
7  dnl verifying it. I am not an autoconf or libtool expert!  dnl empty.
8    
9  dnl This is required at the start; the name is the name of a file  m4_define(pcre_major, [7])
10  dnl it should be seeing, to verify it is in the same directory.  m4_define(pcre_minor, [1])
11    m4_define(pcre_prerelease, [-RC4])
12  AC_INIT(dftables.c)  m4_define(pcre_date, [2007-04-04])
13    
14  dnl A safety precaution  # Libtool shared library interface versions (current:revision:age)
15    m4_define(libpcre_version, [0:1:0])
16    m4_define(libpcreposix_version, [0:0:0])
17    m4_define(libpcrecpp_version, [0:0:0])
18    
19  AC_PREREQ(2.57)  AC_PREREQ(2.57)
20    AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
21    AC_CONFIG_SRCDIR([pcre.h.in])
22    AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
23    AC_CONFIG_HEADERS(config.h)
24    AC_PROG_CC
25    AC_PROG_CXX
26    AC_PROG_INSTALL
27    AC_LIBTOOL_WIN32_DLL
28    AC_PROG_LIBTOOL
29    AC_PROG_LN_S
30    
31  dnl Arrange to build config.h from config.h.in.  PCRE_MAJOR="pcre_major"
32  dnl Manual says this macro should come right after AC_INIT.  PCRE_MINOR="pcre_minor"
33  AC_CONFIG_HEADER(config.h)  PCRE_PRERELEASE="pcre_prerelease"
34    PCRE_DATE="pcre_date"
35  dnl Default values for miscellaneous macros  
36    AC_SUBST(PCRE_MAJOR)
37    AC_SUBST(PCRE_MINOR)
38    AC_SUBST(PCRE_PRERELEASE)
39    AC_SUBST(PCRE_DATE)
40    
41  POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=10  # Set a more sensible default value for $(htmldir).
42    if test "x$htmldir" = 'x${docdir}'
43    then
44      htmldir='${docdir}/html'
45    fi
46    
47  dnl Provide versioning information for libtool shared libraries that  # Handle --disable-cpp
48  dnl are built by default on Unix systems.  AC_ARG_ENABLE(cpp,
49                  AS_HELP_STRING([--disable-cpp],
50                                 [disable C++ support]),
51                  , enable_cpp=yes)
52    
53    # Handle --enable-rebuild-chartables
54    AC_ARG_ENABLE(rebuild-chartables,
55                  AS_HELP_STRING([--enable-rebuild-chartables],
56                                 [rebuild character tables in current locale]),
57                  , enable_rebuild_chartables=no)
58    
59  PCRE_LIB_VERSION=0:1:0  # Handle --enable-utf8 (disabled by default)
60  PCRE_POSIXLIB_VERSION=0:0:0  AC_ARG_ENABLE(utf8,
61  PCRE_CPPLIB_VERSION=0:0:0                AS_HELP_STRING([--enable-utf8],
62                                 [enable UTF-8 support]),
63                  , enable_utf8=unset)
64    
65  dnl Find the PCRE version from the pcre.h file. The PCRE_VERSION variable is  # Handle --enable-unicode-properties
66  dnl substituted in pcre-config.in.  AC_ARG_ENABLE(unicode-properties,
67                  AS_HELP_STRING([--enable-unicode-properties],
68                                 [enable Unicode properties support (implies --enable-utf8)]),
69                  , enable_unicode_properties=no)
70    
71    # Handle --enable-newline=NL
72    dnl AC_ARG_ENABLE(newline,
73    dnl               AS_HELP_STRING([--enable-newline=NL],
74    dnl                              [use NL as newline (lf, cr, crlf, any; default=lf)]),
75    dnl               , enable_newline=lf)
76    
77  PCRE_MAJOR=`grep '#define PCRE_MAJOR' ./pcre.h | cut -c 29-`  # Separate newline options
78  PCRE_MINOR=`grep '#define PCRE_MINOR' ./pcre.h | cut -c 29-`  ac_pcre_newline=lf
79  PCRE_PRERELEASE=`grep '#define PCRE_PRERELEASE' ./pcre.h | cut -c 29-`  AC_ARG_ENABLE(newline-is-cr,
80  PCRE_VERSION=${PCRE_MAJOR}.${PCRE_MINOR}${PCRE_PRERELEASE}                AS_HELP_STRING([--enable-newline-is-cr],
81                                 [use CR as newline character]),
82                  ac_pcre_newline=cr)
83    AC_ARG_ENABLE(newline-is-lf,
84                  AS_HELP_STRING([--enable-newline-is-lf],
85                                 [use LF as newline character (default)]),
86                  ac_pcre_newline=lf)
87    AC_ARG_ENABLE(newline-is-crlf,
88                  AS_HELP_STRING([--enable-newline-is-crlf],
89                                 [use CRLF as newline sequence]),
90                  ac_pcre_newline=crlf)
91    AC_ARG_ENABLE(newline-is-any,
92                  AS_HELP_STRING([--enable-newline-is-any],
93                                 [use any valid Unicode newline sequence]),
94                  ac_pcre_newline=any)
95    enable_newline="$ac_pcre_newline"
96    
97  dnl Handle --disable-cpp  # Handle --enable-ebcdic
98    AC_ARG_ENABLE(ebcdic,
99                  AS_HELP_STRING([--enable-ebcdic],
100                                 [assume EBCDIC coding rather than ASCII (implies --enable-rebuild-chartables)]),
101                  , enable_ebcdic=no)
102    
103  AC_ARG_ENABLE(cpp,  # Handle --disable-stack-for-recursion
104  [  --disable-cpp           disable C++ support],  AC_ARG_ENABLE(stack-for-recursion,
105  want_cpp="$enableval", want_cpp=yes)                AS_HELP_STRING([--disable-stack-for-recursion],
106                                 [don't use stack recursion when matching]),
107                  , enable_stack_for_recursion=yes)
108    
109  dnl Checks for programs.  # Handle --with-posix-malloc-threshold=NBYTES
110    AC_ARG_WITH(posix-malloc-threshold,
111                AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
112                               [threshold for POSIX malloc usage (default=10)]),
113                , with_posix_malloc_threshold=10)
114    
115  AC_PROG_CC  # Handle --with-link-size=N
116    AC_ARG_WITH(link-size,
117                AS_HELP_STRING([--with-link-size=N],
118                               [internal link size (2, 3, or 4 allowed; default=2)]),
119                , with_link_size=2)
120    
121  dnl Test for C++ for the C++ wrapper libpcrecpp. It seems, however, that  # Handle --with-match-limit=N
122  dnl AC_PROC_CXX will set $CXX to "g++" when no C++ compiler is installed, even  AC_ARG_WITH(match-limit,
123  dnl though that is completely bogus. (This may happen only on certain systems              AS_HELP_STRING([--with-match-limit=N],
124  dnl with certain versions of autoconf, of course.) An attempt to include this                             [default limit on internal looping (default=10000000)]),
125  dnl test inside a check for want_cpp was criticized by a libtool expert, who              , with_match_limit=10000000)
126  dnl tells me that it isn't allowed.  
127    # Handle --with-match-limit_recursion=N
128    #
129    # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
130    # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
131    # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
132    # different numeric value (or even the same numeric value as MATCH_LIMIT,
133    # though no longer defined in terms of the latter).
134    #
135    AC_ARG_WITH(match-limit-recursion,
136                AS_HELP_STRING([--with-match-limit-recursion=N],
137                               [default limit on internal recursion (default=MATCH_LIMIT)]),
138                , with_match_limit_recursion=MATCH_LIMIT)
139    
140    # Make sure that if enable_unicode_properties was set, that UTF-8 support
141    # is enabled.
142    #
143    if test "x$enable_unicode_properties" = "xyes"
144    then
145      if test "x$enable_utf8" = "xno"
146      then
147        AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
148      fi
149      enable_utf8=yes
150    fi
151    
152  AC_PROG_CXX  if test "x$enable_utf8" = "xunset"
153    then
154      enable_utf8=no
155    fi
156    
157  dnl The icc compiler has the same options as gcc, so let the rest of the  # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
158  dnl configure script think it has gcc when setting up dnl options etc.  #
159  dnl This is a nasty hack which no longer seems necessary with the update  if test "x$enable_ebcdic" = "xyes"
160  dnl to the latest libtool files, so I have commented it out.  then
161  dnl    enable_rebuild_chartables=yes
162  dnl if test "$CC" = "icc" ; then GCC=yes ; fi  fi
163    
164  AC_PROG_INSTALL  # Convert the newline identifier into the appropriate integer value.
165  AC_LIBTOOL_WIN32_DLL  case "$enable_newline" in
166  AC_PROG_LIBTOOL    lf)   ac_pcre_newline_value=10   ;;
167      cr)   ac_pcre_newline_value=13   ;;
168      crlf) ac_pcre_newline_value=3338 ;;
169      any)  ac_pcre_newline_value=-1   ;;
170      *)
171      AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
172      ;;
173    esac
174    
175  dnl We need to find a compiler for compiling a program to run on the local host  # Check argument to --with-link-size
176  dnl while building. It needs to be different from CC when cross-compiling.  case "$with_link_size" in
177  dnl There is a macro called AC_PROG_CC_FOR_BUILD in the GNU archive for    2|3|4) ;;
178  dnl figuring this out automatically. Unfortunately, it does not work with the    *)
179  dnl latest versions of autoconf. So for the moment, we just default to the    AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
180  dnl same values as the "main" compiler. People who are cross-compiling will    ;;
181  dnl just have to adjust the Makefile by hand or set these values when they  esac
 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)'}  
182    
183  dnl Checks for header files.  AH_TOP([
184    /* On Unix-like systems config.h.in is converted by "configure" into config.h.
185    Some other environments also support the use of "configure". PCRE is written in
186    Standard C, but there are a few non-standard things it can cope with, allowing
187    it to run on SunOS4 and other "close to standard" systems.
188    
189    If you are going to build PCRE "by hand" on a system without "configure" you
190    should copy the distributed config.h.generic to config.h, and then set up the
191    macros the way you need them. Alternatively, you can avoid editing by using -D
192    on the compiler command line to set the macro values.
193    
194    PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
195    HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
196    them both to 0; an emulation function will be used. */])
197    
198    # Checks for header files.
199  AC_HEADER_STDC  AC_HEADER_STDC
200  AC_CHECK_HEADERS(limits.h)  AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
201    
202  dnl The files below are C++ header files. One person told me (PH) that  # The files below are C++ header files.
203  dnl AC_LANG_CPLUSPLUS unsets CXX if it was explicitly set to something which  pcre_have_type_traits="0"
204  dnl doesn't work. However, this doesn't always seem to be the case.  pcre_have_bits_type_traits="0"
205    if test "x$enable_cpp" = "xyes" -a -n "$CXX"
 if test "x$want_cpp" = "xyes" -a -n "$CXX"  
206  then  then
207  AC_LANG_SAVE  AC_LANG_PUSH(C++)
 AC_LANG_CPLUSPLUS  
208    
209  dnl We could be more clever here, given we're doing AC_SUBST with this  # We could be more clever here, given we're doing AC_SUBST with this
210  dnl (eg set a var to be the name of the include file we want).  But we're not  # (eg set a var to be the name of the include file we want). But we're not
211  dnl so it's easy to change back to 'regular' autoconf vars if we needed to.  # so it's easy to change back to 'regular' autoconf vars if we needed to.
212  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
213                           [pcre_have_cpp_headers="0"])                           [pcre_have_cpp_headers="0"])
214  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"],
215                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
216  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
217                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
218  dnl Using AC_SUBST eliminates the need to include config.h in a public .h file  AC_LANG_POP
 AC_SUBST(pcre_have_bits_type_traits)  
 AC_SUBST(pcre_have_type_traits)  
 AC_LANG_RESTORE  
219  fi  fi
220    # Using AC_SUBST eliminates the need to include config.h in a public .h file
221    AC_SUBST(pcre_have_type_traits)
222    AC_SUBST(pcre_have_bits_type_traits)
223    
224  dnl From the above, we now have enough info to know if C++ is fully installed  # Conditional compilation
225  if test "x$want_cpp" = "xyes" -a -n "$CXX" -a "$pcre_have_cpp_headers" = 1; then  AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
226    MAYBE_CPP_TARGETS='$(CPP_TARGETS)'  AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
   HAVE_CPP=  
 else  
   MAYBE_CPP_TARGETS=  
   HAVE_CPP="#"  
 fi  
 AC_SUBST(MAYBE_CPP_TARGETS)  
 AC_SUBST(HAVE_CPP)  
227    
228  dnl Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
229    
230  AC_C_CONST  AC_C_CONST
231  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
232    
233  AC_CHECK_TYPES([long long], [pcre_have_long_long="1"], [pcre_have_long_long="0"])  AC_CHECK_TYPES([long long],
234  AC_CHECK_TYPES([unsigned long long], [pcre_have_ulong_long="1"], [pcre_have_ulong_long="0"])                 [pcre_have_long_long="1"],
235                   [pcre_have_long_long="0"])
236    AC_CHECK_TYPES([unsigned long long],
237                   [pcre_have_ulong_long="1"],
238                   [pcre_have_ulong_long="0"])
239  AC_SUBST(pcre_have_long_long)  AC_SUBST(pcre_have_long_long)
240  AC_SUBST(pcre_have_ulong_long)  AC_SUBST(pcre_have_ulong_long)
241    
242  dnl Checks for library functions.  # Checks for library functions.
243    
244  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)
245    
246  dnl Handle --enable-utf8  # This facilitates -ansi builds under Linux
247    dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
248    
249  AC_ARG_ENABLE(utf8,  if test "x$enable_shared" = "xno" ; then
250  [  --enable-utf8           enable UTF8 support],    AC_DEFINE([PCRE_STATIC], [1], [
251  if test "$enableval" = "yes"; then      Define if linking statically (TODO: make nice with Libtool)])
   UTF8=-DSUPPORT_UTF8  
252  fi  fi
 )  
253    
254  dnl Handle --enable-unicode-properties  # Here is where pcre specific defines are handled
255    
256  AC_ARG_ENABLE(unicode-properties,  if test "$enable_utf8" = "yes"; then
257  [  --enable-unicode-properties  enable Unicode properties support],    AC_DEFINE([SUPPORT_UTF8], [], [
258  if test "$enableval" = "yes"; then      Define to enable support for the UTF-8 Unicode encoding.])
   UCP=-DSUPPORT_UCP  
259  fi  fi
 )  
   
 dnl Handle --enable-newline-is-cr  
260    
261  AC_ARG_ENABLE(newline-is-cr,  if test "$enable_unicode_properties" = "yes"; then
262  [  --enable-newline-is-cr  use CR as the newline character],    AC_DEFINE([SUPPORT_UCP], [], [
263  if test "$enableval" = "yes"; then      Define to enable support for Unicode properties])
   NEWLINE=-DNEWLINE=13  
264  fi  fi
 )  
   
 dnl Handle --enable-newline-is-lf  
265    
266  AC_ARG_ENABLE(newline-is-lf,  if test "$enable_stack_for_recursion" = "no"; then
267  [  --enable-newline-is-lf  use LF as the newline character],    AC_DEFINE([NO_RECURSE], [], [
268  if test "$enableval" = "yes"; then      PCRE uses recursive function calls to handle backtracking while
269    NEWLINE=-DNEWLINE=10      matching. This can sometimes be a problem on systems that have
270        stacks of limited size. Define NO_RECURSE to get a version that
271        doesn't use recursion in the match() function; instead it creates
272        its own stack by steam using pcre_recurse_malloc() to obtain memory
273        from the heap. For more detail, see the comments and other stuff
274        just above the match() function. On systems that support it,
275        "configure" can be used to set this in the Makefile
276        (use --disable-stack-for-recursion).])
277  fi  fi
 )  
   
 dnl Handle --enable-ebcdic  
278    
279  AC_ARG_ENABLE(ebcdic,  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
280  [  --enable-ebcdic         assume EBCDIC coding rather than ASCII],    The value of NEWLINE determines the newline character sequence. On
281  if test "$enableval" == "yes"; then    Unix-like systems, "configure" can be used to override the default,
282    EBCDIC=-DEBCDIC=1    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),
283  fi    or -1 (ANY).])
284  )  
285    AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
286  dnl Handle --disable-stack-for-recursion    The value of LINK_SIZE determines the number of bytes used to store
287      links as offsets within the compiled regex. The default is 2, which
288  AC_ARG_ENABLE(stack-for-recursion,    allows for compiled patterns up to 64K long. This covers the vast
289  [  --disable-stack-for-recursion  disable use of stack recursion when matching],    majority of cases. However, PCRE can also be compiled to use 3 or 4
290  if test "$enableval" = "no"; then    bytes instead. This allows for longer patterns in extreme cases. On
291    NO_RECURSE=-DNO_RECURSE    systems that support it, "configure" can be used to override this default.])
292    
293    AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
294      When calling PCRE via the POSIX interface, additional working storage
295      is required for holding the pointers to capturing substrings because
296      PCRE requires three integers per substring, whereas the POSIX
297      interface provides only two. If the number of expected substrings is
298      small, the wrapper function uses space on the stack, because this is
299      faster than using malloc() for each call. The threshold above which
300      the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
301      systems that support it, "configure" can be used to override this
302      default.])
303    
304    AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
305      The value of MATCH_LIMIT determines the default number of times the
306      internal match() function can be called during a single execution of
307      pcre_exec(). There is a runtime interface for setting a different
308      limit. The limit exists in order to catch runaway regular
309      expressions that take for ever to determine that they do not match.
310      The default is set very large so that it does not accidentally catch
311      legitimate cases. On systems that support it, "configure" can be
312      used to override this default default.])
313    
314    AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
315      The above limit applies to all calls of match(), whether or not they
316      increase the recursion depth. In some environments it is desirable
317      to limit the depth of recursive calls of match() more strictly, in
318      order to restrict the maximum amount of stack (or heap, if
319      NO_RECURSE is defined) that is used. The value of
320      MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
321      have any useful effect, it must be less than the value of
322      MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
323      There is a runtime method for setting a different limit. On systems
324      that support it, "configure" can be used to override the default.])
325    
326    AC_DEFINE([MAX_NAME_SIZE], [32], [
327      This limit is parameterized just in case anybody ever wants to
328      change it. Care must be taken if it is increased, because it guards
329      against integer overflow caused by enormously large patterns.])
330    
331    AC_DEFINE([MAX_NAME_COUNT], [10000], [
332      This limit is parameterized just in case anybody ever wants to
333      change it. Care must be taken if it is increased, because it guards
334      against integer overflow caused by enormously large patterns.])
335    
336    AC_DEFINE([MAX_DUPLENGTH], [30000], [
337      This limit is parameterized just in case anybody ever wants to
338      change it. Care must be taken if it is increased, because it guards
339      against integer overflow caused by enormously large patterns.])
340    
341    AH_VERBATIM([PCRE_EXP_DEFN], [
342    /* If you are compiling for a system other than a Unix-like system or
343       Win32, and it needs some magic to be inserted before the definition
344       of a function that is exported by the library, define this macro to
345       contain the relevant magic. If you do not define this macro, it
346       defaults to "extern" for a C compiler and "extern C" for a C++
347       compiler on non-Win32 systems. This macro apears at the start of
348       every exported function that is part of the external API. It does
349       not appear on functions that are "external" in the C sense, but
350       which are internal to the library. */
351    #undef PCRE_EXP_DEFN])
352    
353    if test "$enable_ebcdic" = "yes"; then
354      AC_DEFINE_UNQUOTED([EBCDIC], [], [
355        If you are compiling for a system that uses EBCDIC instead of ASCII
356        character codes, define this macro as 1. On systems that can use
357        "configure", this can be done via --enable-ebcdic.])
358  fi  fi
 )  
   
 dnl There doesn't seem to be a straightforward way of having parameters  
 dnl that set values, other than fudging the --with thing. So that's what  
 dnl I've done.  
   
 dnl Handle --with-posix-malloc-threshold=n  
   
 AC_ARG_WITH(posix-malloc-threshold,  
 [  --with-posix-malloc-threshold=10  threshold for POSIX malloc usage],  
   POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=$withval  
 )  
359    
360  dnl Handle --with-link-size=n  # Platform specific issues
361    NO_UNDEFINED=
362    EXPORT_ALL_SYMBOLS=
363    case $host_os in
364      cygwin* | mingw* )
365        if test X"$enable_shared" = Xyes; then
366          NO_UNDEFINED="-no-undefined"
367          EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
368        fi
369        ;;
370    esac
371    
372  AC_ARG_WITH(link-size,  # The extra LDFLAGS for each particular library
373  [  --with-link-size=2    internal link size (2, 3, or 4 allowed)],  # (Note: The libpcre*_version bits are m4 variables, assigned above)
   LINK_SIZE=-DLINK_SIZE=$withval  
 )  
374    
375  dnl Handle --with-match-limit=n  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"
376    
377  AC_ARG_WITH(match-limit,  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"
 [  --with-match-limit=10000000  default limit on internal looping],  
   MATCH_LIMIT=-DMATCH_LIMIT=$withval  
 )  
378    
379  dnl Handle --with-match-limit_recursion=n  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"
380    
381  AC_ARG_WITH(match-limit-recursion,  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
382  [  --with-match-limit-recursion=10000000  default limit on internal recursion],  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
383    MATCH_LIMIT_RECURSION=-DMATCH_LIMIT_RECURSION=$withval  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
384    
385    # When we run 'make distcheck', use these arguments.
386    DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
387    AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
388    
389    # Produce these files, in addition to config.h.
390    AC_CONFIG_FILES(
391            Makefile
392            libpcre.pc
393            libpcrecpp.pc
394            pcre-config
395            pcre.h
396            pcre_stringpiece.h
397            pcrecpparg.h
398  )  )
399    
400  dnl Unicode character property support implies UTF-8 support  # Make the generated script files executable.
401    AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
402    
403  if test "$UCP" != "" ; then  # Make sure that pcre_chartables.c is removed in case the method for
404    UTF8=-DSUPPORT_UTF8  # creating it was changed by reconfiguration.
405  fi  AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
406    
407    AC_OUTPUT
408    
409    # Print out a nice little message after configure is run displaying your
410    # chosen options.
411    #
412    cat <<EOF
413    
414    $PACKAGE-$VERSION configuration summary:
415    
416        Install prefix ......... : ${prefix}
417        C preprocessor ......... : ${CPP}
418        C compiler ............. : ${CC}
419        C++ preprocessor ....... : ${CXXCPP}
420        C++ compiler ........... : ${CXX}
421        Linker ................. : ${LD}
422        C preprocessor flags ... : ${CPPFLAGS}
423        C compiler flags ....... : ${CFLAGS}
424        C++ compiler flags ..... : ${CXXFLAGS}
425        Linker flags ........... : ${LDFLAGS}
426        Extra libraries ........ : ${LIBS}
427    
428        Build C++ library ...... : ${enable_cpp}
429        Enable UTF-8 support ... : ${enable_utf8}
430        Unicode properties ..... : ${enable_unicode_properties}
431        Newline char/sequence .. : ${enable_newline}
432        EBCDIC coding .......... : ${enable_ebcdic}
433        Rebuild char tables .... : ${enable_rebuild_chartables}
434        Use stack recursion .... : ${enable_stack_for_recursion}
435        POSIX mem threshold .... : ${with_posix_malloc_threshold}
436        Internal link size ..... : ${with_link_size}
437        Match limit ............ : ${with_match_limit}
438        Match limit recursion .. : ${with_match_limit_recursion}
439        Build shared libs ...... : ${enable_shared}
440        Build static libs ...... : ${enable_static}
441    
442  dnl "Export" these variables  EOF
   
 AC_SUBST(BUILD_EXEEXT)  
 AC_SUBST(BUILD_OBJEXT)  
 AC_SUBST(CC_FOR_BUILD)  
 AC_SUBST(CXX_FOR_BUILD)  
 AC_SUBST(CFLAGS_FOR_BUILD)  
 AC_SUBST(CXXFLAGS_FOR_BUILD)  
 AC_SUBST(CXXLDFLAGS)  
 AC_SUBST(EBCDIC)  
 AC_SUBST(HAVE_MEMMOVE)  
 AC_SUBST(HAVE_STRERROR)  
 AC_SUBST(LINK_SIZE)  
 AC_SUBST(MATCH_LIMIT)  
 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)  
   
 dnl Stuff to make MinGW work better. Special treatment is no longer  
 dnl needed for Cygwin.  
   
 case $host_os in  
 mingw* )  
     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)  
   
 if test "x$enable_shared" = "xno" ; then  
     AC_DEFINE([PCRE_STATIC],[1],[to link statically])  
 fi  
443    
444  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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