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revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC revision 155 by ph10, Tue Apr 24 13:36:11 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, [])
12  AC_INIT(dftables.c)  m4_define(pcre_date, [2007-04-24])
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, anycrlf, 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}${PCRE_PRERELEASE}                AS_HELP_STRING([--enable-newline-is-cr],
81                                 [use CR as newline character]),
82                  ac_pcre_newline=cr)
83    AC_ARG_ENABLE(newline-is-lf,
84                  AS_HELP_STRING([--enable-newline-is-lf],
85                                 [use LF as newline character (default)]),
86                  ac_pcre_newline=lf)
87    AC_ARG_ENABLE(newline-is-crlf,
88                  AS_HELP_STRING([--enable-newline-is-crlf],
89                                 [use CRLF as newline sequence]),
90                  ac_pcre_newline=crlf)
91    AC_ARG_ENABLE(newline-is-anycrlf,
92                  AS_HELP_STRING([--enable-newline-is-anycrlf],
93                                 [use CR, LF, or CRLF as newline sequence]),
94                  ac_pcre_newline=anycrlf)
95    AC_ARG_ENABLE(newline-is-any,
96                  AS_HELP_STRING([--enable-newline-is-any],
97                                 [use any valid Unicode newline sequence]),
98                  ac_pcre_newline=any)
99    enable_newline="$ac_pcre_newline"
100    
101  dnl Handle --disable-cpp  # Handle --enable-ebcdic
102    AC_ARG_ENABLE(ebcdic,
103                  AS_HELP_STRING([--enable-ebcdic],
104                                 [assume EBCDIC coding rather than ASCII (implies --enable-rebuild-chartables)]),
105                  , enable_ebcdic=no)
106    
107  AC_ARG_ENABLE(cpp,  # Handle --disable-stack-for-recursion
108  [  --disable-cpp           disable C++ support],  AC_ARG_ENABLE(stack-for-recursion,
109  want_cpp="$enableval", want_cpp=yes)                AS_HELP_STRING([--disable-stack-for-recursion],
110                                 [don't use stack recursion when matching]),
111                  , enable_stack_for_recursion=yes)
112    
113  dnl Checks for programs.  # Handle --with-posix-malloc-threshold=NBYTES
114    AC_ARG_WITH(posix-malloc-threshold,
115                AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
116                               [threshold for POSIX malloc usage (default=10)]),
117                , with_posix_malloc_threshold=10)
118    
119  AC_PROG_CC  # Handle --with-link-size=N
120    AC_ARG_WITH(link-size,
121                AS_HELP_STRING([--with-link-size=N],
122                               [internal link size (2, 3, or 4 allowed; default=2)]),
123                , with_link_size=2)
124    
125  dnl Test for C++ for the C++ wrapper libpcrecpp. It seems, however, that  # Handle --with-match-limit=N
126  dnl AC_PROC_CXX will set $CXX to "g++" when no C++ compiler is installed, even  AC_ARG_WITH(match-limit,
127  dnl though that is completely bogus. (This may happen only on certain systems              AS_HELP_STRING([--with-match-limit=N],
128  dnl with certain versions of autoconf, of course.) An attempt to include this                             [default limit on internal looping (default=10000000)]),
129  dnl test inside a check for want_cpp was criticized by a libtool expert, who              , with_match_limit=10000000)
130  dnl tells me that it isn't allowed.  
131    # Handle --with-match-limit_recursion=N
132    #
133    # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
134    # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
135    # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
136    # different numeric value (or even the same numeric value as MATCH_LIMIT,
137    # though no longer defined in terms of the latter).
138    #
139    AC_ARG_WITH(match-limit-recursion,
140                AS_HELP_STRING([--with-match-limit-recursion=N],
141                               [default limit on internal recursion (default=MATCH_LIMIT)]),
142                , with_match_limit_recursion=MATCH_LIMIT)
143    
144    # Make sure that if enable_unicode_properties was set, that UTF-8 support
145    # is enabled.
146    #
147    if test "x$enable_unicode_properties" = "xyes"
148    then
149      if test "x$enable_utf8" = "xno"
150      then
151        AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
152      fi
153      enable_utf8=yes
154    fi
155    
156  AC_PROG_CXX  if test "x$enable_utf8" = "xunset"
157    then
158      enable_utf8=no
159    fi
160    
161  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.
162  dnl configure script think it has gcc when setting up dnl options etc.  #
163  dnl This is a nasty hack which no longer seems necessary with the update  if test "x$enable_ebcdic" = "xyes"
164  dnl to the latest libtool files, so I have commented it out.  then
165  dnl    enable_rebuild_chartables=yes
166  dnl if test "$CC" = "icc" ; then GCC=yes ; fi  fi
167    
168  AC_PROG_INSTALL  # Convert the newline identifier into the appropriate integer value.
169  AC_LIBTOOL_WIN32_DLL  case "$enable_newline" in
170  AC_PROG_LIBTOOL    lf)      ac_pcre_newline_value=10   ;;
171      cr)      ac_pcre_newline_value=13   ;;
172      crlf)    ac_pcre_newline_value=3338 ;;
173      anycrlf) ac_pcre_newline_value=-2   ;;
174      any)     ac_pcre_newline_value=-1   ;;
175      *)
176      AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
177      ;;
178    esac
179    
180  dnl We need to find a compiler for compiling a program to run on the local host  # Check argument to --with-link-size
181  dnl while building. It needs to be different from CC when cross-compiling.  case "$with_link_size" in
182  dnl There is a macro called AC_PROG_CC_FOR_BUILD in the GNU archive for    2|3|4) ;;
183  dnl figuring this out automatically. Unfortunately, it does not work with the    *)
184  dnl latest versions of autoconf. So for the moment, we just default to the    AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
185  dnl same values as the "main" compiler. People who are cross-compiling will    ;;
186  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)'}  
187    
188  dnl Checks for header files.  AH_TOP([
189    /* On Unix-like systems config.h.in is converted by "configure" into config.h.
190    Some other environments also support the use of "configure". PCRE is written in
191    Standard C, but there are a few non-standard things it can cope with, allowing
192    it to run on SunOS4 and other "close to standard" systems.
193    
194    If you are going to build PCRE "by hand" on a system without "configure" you
195    should copy the distributed config.h.generic to config.h, and then set up the
196    macros the way you need them. Alternatively, you can avoid editing by using -D
197    on the compiler command line to set the macro values.
198    
199    PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
200    HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
201    them both to 0; an emulation function will be used. */])
202    
203    # Checks for header files.
204  AC_HEADER_STDC  AC_HEADER_STDC
205  AC_CHECK_HEADERS(limits.h)  AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
206    
207  dnl The files below are C++ header files. One person told me (PH) that  # The files below are C++ header files.
208  dnl AC_LANG_CPLUSPLUS unsets CXX if it was explicitly set to something which  pcre_have_type_traits="0"
209  dnl doesn't work. However, this doesn't always seem to be the case.  pcre_have_bits_type_traits="0"
210    if test "x$enable_cpp" = "xyes" -a -n "$CXX"
 if test "x$want_cpp" = "xyes" -a -n "$CXX"  
211  then  then
212  AC_LANG_SAVE  AC_LANG_PUSH(C++)
 AC_LANG_CPLUSPLUS  
213    
214  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
215  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
216  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.
217  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
218                           [pcre_have_cpp_headers="0"])                           [pcre_have_cpp_headers="0"])
219  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"],
220                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
221  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
222                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
223  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  
224  fi  fi
225    # Using AC_SUBST eliminates the need to include config.h in a public .h file
226    AC_SUBST(pcre_have_type_traits)
227    AC_SUBST(pcre_have_bits_type_traits)
228    
229  dnl From the above, we now have enough info to know if C++ is fully installed  # Conditional compilation
230  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")
231    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)  
232    
233  dnl Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
234    
235  AC_C_CONST  AC_C_CONST
236  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
237    
238  AC_CHECK_TYPES([long long], [pcre_have_long_long="1"], [pcre_have_long_long="0"])  AC_CHECK_TYPES([long long],
239  AC_CHECK_TYPES([unsigned long long], [pcre_have_ulong_long="1"], [pcre_have_ulong_long="0"])                 [pcre_have_long_long="1"],
240                   [pcre_have_long_long="0"])
241    AC_CHECK_TYPES([unsigned long long],
242                   [pcre_have_ulong_long="1"],
243                   [pcre_have_ulong_long="0"])
244  AC_SUBST(pcre_have_long_long)  AC_SUBST(pcre_have_long_long)
245  AC_SUBST(pcre_have_ulong_long)  AC_SUBST(pcre_have_ulong_long)
246    
247  dnl Checks for library functions.  # Checks for library functions.
248    
249  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)
250    
251  dnl Handle --enable-utf8  # This facilitates -ansi builds under Linux
252    dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
253    
254  AC_ARG_ENABLE(utf8,  if test "x$enable_shared" = "xno" ; then
255  [  --enable-utf8           enable UTF8 support],    AC_DEFINE([PCRE_STATIC], [1], [
256  if test "$enableval" = "yes"; then      Define if linking statically (TODO: make nice with Libtool)])
   UTF8=-DSUPPORT_UTF8  
257  fi  fi
 )  
258    
259  dnl Handle --enable-unicode-properties  # Here is where pcre specific defines are handled
260    
261  AC_ARG_ENABLE(unicode-properties,  if test "$enable_utf8" = "yes"; then
262  [  --enable-unicode-properties  enable Unicode properties support],    AC_DEFINE([SUPPORT_UTF8], [], [
263  if test "$enableval" = "yes"; then      Define to enable support for the UTF-8 Unicode encoding.])
   UCP=-DSUPPORT_UCP  
264  fi  fi
 )  
   
 dnl Handle --enable-newline-is-cr  
265    
266  AC_ARG_ENABLE(newline-is-cr,  if test "$enable_unicode_properties" = "yes"; then
267  [  --enable-newline-is-cr  use CR as the newline character],    AC_DEFINE([SUPPORT_UCP], [], [
268  if test "$enableval" = "yes"; then      Define to enable support for Unicode properties])
   NEWLINE=-DNEWLINE=13  
269  fi  fi
 )  
   
 dnl Handle --enable-newline-is-lf  
270    
271  AC_ARG_ENABLE(newline-is-lf,  if test "$enable_stack_for_recursion" = "no"; then
272  [  --enable-newline-is-lf  use LF as the newline character],    AC_DEFINE([NO_RECURSE], [], [
273  if test "$enableval" = "yes"; then      PCRE uses recursive function calls to handle backtracking while
274    NEWLINE=-DNEWLINE=10      matching. This can sometimes be a problem on systems that have
275        stacks of limited size. Define NO_RECURSE to get a version that
276        doesn't use recursion in the match() function; instead it creates
277        its own stack by steam using pcre_recurse_malloc() to obtain memory
278        from the heap. For more detail, see the comments and other stuff
279        just above the match() function. On systems that support it,
280        "configure" can be used to set this in the Makefile
281        (use --disable-stack-for-recursion).])
282  fi  fi
 )  
   
 dnl Handle --enable-ebcdic  
283    
284  AC_ARG_ENABLE(ebcdic,  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
285  [  --enable-ebcdic         assume EBCDIC coding rather than ASCII],    The value of NEWLINE determines the newline character sequence. On
286  if test "$enableval" == "yes"; then    Unix-like systems, "configure" can be used to override the default,
287    EBCDIC=-DEBCDIC=1    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),
288  fi    -1 (ANY), or -2 (ANYCRLF).])
289  )  
290    AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
291  dnl Handle --disable-stack-for-recursion    The value of LINK_SIZE determines the number of bytes used to store
292      links as offsets within the compiled regex. The default is 2, which
293  AC_ARG_ENABLE(stack-for-recursion,    allows for compiled patterns up to 64K long. This covers the vast
294  [  --disable-stack-for-recursion  disable use of stack recursion when matching],    majority of cases. However, PCRE can also be compiled to use 3 or 4
295  if test "$enableval" = "no"; then    bytes instead. This allows for longer patterns in extreme cases. On
296    NO_RECURSE=-DNO_RECURSE    systems that support it, "configure" can be used to override this default.])
297    
298    AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
299      When calling PCRE via the POSIX interface, additional working storage
300      is required for holding the pointers to capturing substrings because
301      PCRE requires three integers per substring, whereas the POSIX
302      interface provides only two. If the number of expected substrings is
303      small, the wrapper function uses space on the stack, because this is
304      faster than using malloc() for each call. The threshold above which
305      the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
306      systems that support it, "configure" can be used to override this
307      default.])
308    
309    AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
310      The value of MATCH_LIMIT determines the default number of times the
311      internal match() function can be called during a single execution of
312      pcre_exec(). There is a runtime interface for setting a different
313      limit. The limit exists in order to catch runaway regular
314      expressions that take for ever to determine that they do not match.
315      The default is set very large so that it does not accidentally catch
316      legitimate cases. On systems that support it, "configure" can be
317      used to override this default default.])
318    
319    AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
320      The above limit applies to all calls of match(), whether or not they
321      increase the recursion depth. In some environments it is desirable
322      to limit the depth of recursive calls of match() more strictly, in
323      order to restrict the maximum amount of stack (or heap, if
324      NO_RECURSE is defined) that is used. The value of
325      MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
326      have any useful effect, it must be less than the value of
327      MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
328      There is a runtime method for setting a different limit. On systems
329      that support it, "configure" can be used to override the default.])
330    
331    AC_DEFINE([MAX_NAME_SIZE], [32], [
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_NAME_COUNT], [10000], [
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    AC_DEFINE([MAX_DUPLENGTH], [30000], [
342      This limit is parameterized just in case anybody ever wants to
343      change it. Care must be taken if it is increased, because it guards
344      against integer overflow caused by enormously large patterns.])
345    
346    AH_VERBATIM([PCRE_EXP_DEFN], [
347    /* If you are compiling for a system other than a Unix-like system or
348       Win32, and it needs some magic to be inserted before the definition
349       of a function that is exported by the library, define this macro to
350       contain the relevant magic. If you do not define this macro, it
351       defaults to "extern" for a C compiler and "extern C" for a C++
352       compiler on non-Win32 systems. This macro apears at the start of
353       every exported function that is part of the external API. It does
354       not appear on functions that are "external" in the C sense, but
355       which are internal to the library. */
356    #undef PCRE_EXP_DEFN])
357    
358    if test "$enable_ebcdic" = "yes"; then
359      AC_DEFINE_UNQUOTED([EBCDIC], [], [
360        If you are compiling for a system that uses EBCDIC instead of ASCII
361        character codes, define this macro as 1. On systems that can use
362        "configure", this can be done via --enable-ebcdic.])
363  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  
 )  
364    
365  dnl Handle --with-link-size=n  # Platform specific issues
366    NO_UNDEFINED=
367    EXPORT_ALL_SYMBOLS=
368    case $host_os in
369      cygwin* | mingw* )
370        if test X"$enable_shared" = Xyes; then
371          NO_UNDEFINED="-no-undefined"
372          EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
373        fi
374        ;;
375    esac
376    
377  AC_ARG_WITH(link-size,  # The extra LDFLAGS for each particular library
378  [  --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=$withval  
 )  
379    
380  dnl Handle --with-match-limit=n  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"
381    
382  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  
 )  
383    
384  dnl Handle --with-match-limit_recursion=n  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"
385    
386  AC_ARG_WITH(match-limit-recursion,  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
387  [  --with-match-limit-recursion=10000000  default limit on internal recursion],  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
388    MATCH_LIMIT_RECURSION=-DMATCH_LIMIT_RECURSION=$withval  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
389    
390    # When we run 'make distcheck', use these arguments.
391    DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
392    AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
393    
394    # Produce these files, in addition to config.h.
395    AC_CONFIG_FILES(
396            Makefile
397            libpcre.pc
398            libpcrecpp.pc
399            pcre-config
400            pcre.h
401            pcre_stringpiece.h
402            pcrecpparg.h
403  )  )
404    
405  dnl Unicode character property support implies UTF-8 support  # Make the generated script files executable.
406    AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
407    
408  if test "$UCP" != "" ; then  # Make sure that pcre_chartables.c is removed in case the method for
409    UTF8=-DSUPPORT_UTF8  # creating it was changed by reconfiguration.
410  fi  AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
411    
412    AC_OUTPUT
413    
414    # Print out a nice little message after configure is run displaying your
415    # chosen options.
416    #
417    cat <<EOF
418    
419    $PACKAGE-$VERSION configuration summary:
420    
421        Install prefix ......... : ${prefix}
422        C preprocessor ......... : ${CPP}
423        C compiler ............. : ${CC}
424        C++ preprocessor ....... : ${CXXCPP}
425        C++ compiler ........... : ${CXX}
426        Linker ................. : ${LD}
427        C preprocessor flags ... : ${CPPFLAGS}
428        C compiler flags ....... : ${CFLAGS}
429        C++ compiler flags ..... : ${CXXFLAGS}
430        Linker flags ........... : ${LDFLAGS}
431        Extra libraries ........ : ${LIBS}
432    
433        Build C++ library ...... : ${enable_cpp}
434        Enable UTF-8 support ... : ${enable_utf8}
435        Unicode properties ..... : ${enable_unicode_properties}
436        Newline char/sequence .. : ${enable_newline}
437        EBCDIC coding .......... : ${enable_ebcdic}
438        Rebuild char tables .... : ${enable_rebuild_chartables}
439        Use stack recursion .... : ${enable_stack_for_recursion}
440        POSIX mem threshold .... : ${with_posix_malloc_threshold}
441        Internal link size ..... : ${with_link_size}
442        Match limit ............ : ${with_match_limit}
443        Match limit recursion .. : ${with_match_limit_recursion}
444        Build shared libs ...... : ${enable_shared}
445        Build static libs ...... : ${enable_static}
446    
447  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  
448    
449  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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