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revision 91 by nigel, Sat Feb 24 21:41:34 2007 UTC revision 116 by ph10, Fri Mar 9 15:23:02 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, [-RC1])
12  AC_INIT(dftables.c)  m4_define(pcre_date, [2007-03-05])
13  AC_CONFIG_SRCDIR([pcre.h])  
14    # Libtool shared library interface versions (current:revision:age)
15  dnl A safety precaution  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    
30  dnl Arrange to build config.h from config.h.in.  PCRE_MAJOR="pcre_major"
31  dnl Manual says this macro should come right after AC_INIT.  PCRE_MINOR="pcre_minor"
32  AC_CONFIG_HEADER(config.h)  PCRE_PRERELEASE="pcre_prerelease"
33    PCRE_DATE="pcre_date"
34  dnl Default values for miscellaneous macros  
35    AC_SUBST(PCRE_MAJOR)
36  POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=10  AC_SUBST(PCRE_MINOR)
37    AC_SUBST(PCRE_PRERELEASE)
38    AC_SUBST(PCRE_DATE)
39    
40  dnl Provide versioning information for libtool shared libraries that  # Set a more sensible default value for $(htmldir).
41  dnl are built by default on Unix systems.  if test "x$htmldir" = 'x${docdir}'
42    then
43      htmldir='${docdir}/html'
44    fi
45    
46  PCRE_LIB_VERSION=0:1:0  # Handle --disable-cpp
47  PCRE_POSIXLIB_VERSION=0:0:0  AC_ARG_ENABLE(cpp,
48  PCRE_CPPLIB_VERSION=0:0:0                AS_HELP_STRING([--disable-cpp],
49                                 [disable C++ support]),
50                  , enable_cpp=yes)
51    
52  dnl Find the PCRE version from the pcre.h file. The PCRE_VERSION variable is  # Handle --enable-utf8 (disabled by default)
53  dnl substituted in pcre-config.in.  AC_ARG_ENABLE(utf8,
54                  AS_HELP_STRING([--enable-utf8],
55                                 [enable UTF-8 support]),
56                  , enable_utf8=unset)
57    
58  PCRE_MAJOR=`grep '#define PCRE_MAJOR' ${srcdir}/pcre.h | cut -c 29-`  # Handle --enable-unicode-properties
59  PCRE_MINOR=`grep '#define PCRE_MINOR' ${srcdir}/pcre.h | cut -c 29-`  AC_ARG_ENABLE(unicode-properties,
60  PCRE_PRERELEASE=`grep '#define PCRE_PRERELEASE' ${srcdir}/pcre.h | cut -c 29-`                AS_HELP_STRING([--enable-unicode-properties],
61  PCRE_VERSION=${PCRE_MAJOR}.${PCRE_MINOR}${PCRE_PRERELEASE}                               [enable Unicode properties support (implies --enable-utf8)]),
62                  , enable_unicode_properties=no)
63    
64    # Handle --enable-newline=NL
65    dnl AC_ARG_ENABLE(newline,
66    dnl               AS_HELP_STRING([--enable-newline=NL],
67    dnl                              [use NL as newline (lf, cr, crlf, any; default=lf)]),
68    dnl               , enable_newline=lf)
69    
70  dnl Handle --disable-cpp  # Separate newline options
71    ac_pcre_newline=lf
72    AC_ARG_ENABLE(newline-is-cr,
73                  AS_HELP_STRING([--enable-newline-is-cr],
74                                 [use CR as newline character]),
75                  ac_pcre_newline=cr)
76    AC_ARG_ENABLE(newline-is-lf,
77                  AS_HELP_STRING([--enable-newline-is-lf],
78                                 [use LF as newline character (default)]),
79                  ac_pcre_newline=lf)
80    AC_ARG_ENABLE(newline-is-crlf,
81                  AS_HELP_STRING([--enable-newline-is-crlf],
82                                 [use CRLF as newline sequence]),
83                  ac_pcre_newline=crlf)
84    AC_ARG_ENABLE(newline-is-any,
85                  AS_HELP_STRING([--enable-newline-is-any],
86                                 [use any valid Unicode newline sequence]),
87                  ac_pcre_newline=any)
88    enable_newline="$ac_pcre_newline"
89    
90  AC_ARG_ENABLE(cpp,  # Handle --enable-ebcdic
91  [  --disable-cpp           disable C++ support],  AC_ARG_ENABLE(ebcdic,
92  want_cpp="$enableval", want_cpp=yes)                AS_HELP_STRING([--enable-ebcdic],
93                                 [assume EBCDIC coding rather than ASCII]),
94                  , enable_ebcdic=no)
95    
96  dnl Checks for programs.  # Handle --disable-stack-for-recursion
97    AC_ARG_ENABLE(stack-for-recursion,
98                  AS_HELP_STRING([--disable-stack-for-recursion],
99                                 [don't use stack recursion when matching]),
100                  , enable_stack_for_recursion=yes)
101    
102  AC_PROG_CC  # Handle --with-posix-malloc-threshold=NBYTES
103    AC_ARG_WITH(posix-malloc-threshold,
104                AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
105                               [threshold for POSIX malloc usage (default=10)]),
106                , with_posix_malloc_threshold=10)
107    
108  dnl Test for C++ for the C++ wrapper libpcrecpp. It seems, however, that  # Handle --with-link-size=N
109  dnl AC_PROC_CXX will set $CXX to "g++" when no C++ compiler is installed, even  AC_ARG_WITH(link-size,
110  dnl though that is completely bogus. (This may happen only on certain systems              AS_HELP_STRING([--with-link-size=N],
111  dnl with certain versions of autoconf, of course.) An attempt to include this                             [internal link size (2, 3, or 4 allowed; default=2)]),
112  dnl test inside a check for want_cpp was criticized by a libtool expert, who              , with_link_size=2)
 dnl tells me that it isn't allowed.  
113    
114  AC_PROG_CXX  # Handle --with-match-limit=N
115    AC_ARG_WITH(match-limit,
116                AS_HELP_STRING([--with-match-limit=N],
117                               [default limit on internal looping (default=10000000)]),
118                , with_match_limit=10000000)
119    
120    # Handle --with-match-limit_recursion=N
121    #
122    # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
123    # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
124    # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
125    # different numeric value (or even the same numeric value as MATCH_LIMIT,
126    # though no longer defined in terms of the latter).
127    #
128    AC_ARG_WITH(match-limit-recursion,
129                AS_HELP_STRING([--with-match-limit-recursion=N],
130                               [default limit on internal recursion (default=MATCH_LIMIT)]),
131                , with_match_limit_recursion=MATCH_LIMIT)
132    
133    # Make sure that if enable_unicode_properties was set, that UTF-8 support
134    # is enabled.
135    #
136    if test "x$enable_unicode_properties" = "xyes"
137    then
138      if test "x$enable_utf8" = "xno"
139      then
140        AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
141      fi
142      enable_utf8=yes
143    fi
144    
145  dnl The icc compiler has the same options as gcc, so let the rest of the  if test "x$enable_utf8" = "xunset"
146  dnl configure script think it has gcc when setting up dnl options etc.  then
147  dnl This is a nasty hack which no longer seems necessary with the update    enable_utf8=no
148  dnl to the latest libtool files, so I have commented it out.  fi
 dnl  
 dnl if test "$CC" = "icc" ; then GCC=yes ; fi  
149    
150  AC_PROG_INSTALL  # Convert the newline identifier into the appropriate integer value.
151  AC_LIBTOOL_WIN32_DLL  case "$enable_newline" in
152  AC_PROG_LIBTOOL    lf)   ac_pcre_newline_value=10   ;;
153      cr)   ac_pcre_newline_value=13   ;;
154      crlf) ac_pcre_newline_value=3338 ;;
155      any)  ac_pcre_newline_value=-1   ;;
156      *)
157      AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
158      ;;
159    esac
160    
161  dnl We need to find a compiler for compiling a program to run on the local host  # Check argument to --with-link-size
162  dnl while building. It needs to be different from CC when cross-compiling.  case "$with_link_size" in
163  dnl There is a macro called AC_PROG_CC_FOR_BUILD in the GNU archive for    2|3|4) ;;
164  dnl figuring this out automatically. Unfortunately, it does not work with the    *)
165  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])
166  dnl same values as the "main" compiler. People who are cross-compiling will    ;;
167  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)'}  
168    
169  dnl Checks for header files.  AH_TOP([
170    /* On Unix-like systems config.h.in is converted by "configure" into config.h.
171    Some other environments also support the use of "configure". PCRE is written in
172    Standard C, but there are a few non-standard things it can cope with, allowing
173    it to run on SunOS4 and other "close to standard" systems.
174    
175    If you are going to build PCRE "by hand" on a system without "configure" you
176    should copy the distributed config.h.generic to config.h, and then set up the
177    macros the way you need them. Alternatively, you can avoid editing by using -D
178    on the compiler command line to set the macro values.
179    
180    PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
181    HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
182    them both to 0; an emulation function will be used. */])
183    
184    # Checks for header files.
185  AC_HEADER_STDC  AC_HEADER_STDC
186  AC_CHECK_HEADERS(limits.h)  AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
187    
188  dnl The files below are C++ header files. One person told me (PH) that  # The files below are C++ header files.
189  dnl AC_LANG_CPLUSPLUS unsets CXX if it was explicitly set to something which  pcre_have_type_traits="0"
190  dnl doesn't work. However, this doesn't always seem to be the case.  pcre_have_bits_type_traits="0"
191    if test "x$enable_cpp" = "xyes" -a -n "$CXX"
 if test "x$want_cpp" = "xyes" -a -n "$CXX"  
192  then  then
193  AC_LANG_SAVE  AC_LANG_PUSH(C++)
 AC_LANG_CPLUSPLUS  
194    
195  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
196  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
197  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.
198  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
199                           [pcre_have_cpp_headers="0"])                           [pcre_have_cpp_headers="0"])
200  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"],
201                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
202  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
203                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
204  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  
205  fi  fi
206    # Using AC_SUBST eliminates the need to include config.h in a public .h file
207    AC_SUBST(pcre_have_type_traits)
208    AC_SUBST(pcre_have_bits_type_traits)
209    
210  dnl From the above, we now have enough info to know if C++ is fully installed  # Conditional compilation
211  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")
   MAYBE_CPP_TARGETS='$(CPP_TARGETS)'  
   HAVE_CPP=  
 else  
   MAYBE_CPP_TARGETS=  
   HAVE_CPP="#"  
 fi  
 AC_SUBST(MAYBE_CPP_TARGETS)  
 AC_SUBST(HAVE_CPP)  
212    
213  dnl Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
214    
215  AC_C_CONST  AC_C_CONST
216  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
217    
218  AC_CHECK_TYPES([long long], [pcre_have_long_long="1"], [pcre_have_long_long="0"])  AC_CHECK_TYPES([long long],
219  AC_CHECK_TYPES([unsigned long long], [pcre_have_ulong_long="1"], [pcre_have_ulong_long="0"])                 [pcre_have_long_long="1"],
220                   [pcre_have_long_long="0"])
221    AC_CHECK_TYPES([unsigned long long],
222                   [pcre_have_ulong_long="1"],
223                   [pcre_have_ulong_long="0"])
224  AC_SUBST(pcre_have_long_long)  AC_SUBST(pcre_have_long_long)
225  AC_SUBST(pcre_have_ulong_long)  AC_SUBST(pcre_have_ulong_long)
226    
227  dnl Checks for library functions.  # Checks for library functions.
228    
229  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)
230    
231  dnl Handle --enable-utf8  # This facilitates -ansi builds under Linux
232    dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
 AC_ARG_ENABLE(utf8,  
 [  --enable-utf8           enable UTF8 support],  
 if test "$enableval" = "yes"; then  
   UTF8=-DSUPPORT_UTF8  
 fi  
 )  
   
 dnl Handle --enable-unicode-properties  
   
 AC_ARG_ENABLE(unicode-properties,  
 [  --enable-unicode-properties  enable Unicode properties support],  
 if test "$enableval" = "yes"; then  
   UCP=-DSUPPORT_UCP  
 fi  
 )  
233    
234  dnl Handle --enable-newline-is-cr  if test "x$enable_shared" = "xno" ; then
235      AC_DEFINE([PCRE_STATIC], [1], [
236  AC_ARG_ENABLE(newline-is-cr,      Define if linking statically (TODO: make nice with Libtool)])
 [  --enable-newline-is-cr  use CR as the newline character],  
 if test "$enableval" = "yes"; then  
   NEWLINE=-DNEWLINE=13  
 fi  
 )  
   
 dnl Handle --enable-newline-is-lf  
   
 AC_ARG_ENABLE(newline-is-lf,  
 [  --enable-newline-is-lf  use LF as the newline character],  
 if test "$enableval" = "yes"; then  
   NEWLINE=-DNEWLINE=10  
 fi  
 )  
   
 dnl Handle --enable-newline-is-crlf  
   
 AC_ARG_ENABLE(newline-is-crlf,  
 [  --enable-newline-is-crlf  use CRLF as the newline sequence],  
 if test "$enableval" = "yes"; then  
   NEWLINE=-DNEWLINE=3338  
 fi  
 )  
   
 dnl Handle --enable-ebcdic  
   
 AC_ARG_ENABLE(ebcdic,  
 [  --enable-ebcdic         assume EBCDIC coding rather than ASCII],  
 if test "$enableval" == "yes"; then  
   EBCDIC=-DEBCDIC=1  
 fi  
 )  
   
 dnl Handle --disable-stack-for-recursion  
   
 AC_ARG_ENABLE(stack-for-recursion,  
 [  --disable-stack-for-recursion  disable use of stack recursion when matching],  
 if test "$enableval" = "no"; then  
   NO_RECURSE=-DNO_RECURSE  
237  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.  
238    
239  dnl Handle --with-posix-malloc-threshold=n  # Here is where pcre specific defines are handled
240    
241  AC_ARG_WITH(posix-malloc-threshold,  if test "$enable_utf8" = "yes"; then
242  [  --with-posix-malloc-threshold=10  threshold for POSIX malloc usage],    AC_DEFINE([SUPPORT_UTF8], [], [
243    POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=$withval      Define to enable support for the UTF-8 Unicode encoding.])
244  )  fi
245    
246  dnl Handle --with-link-size=n  if test "$enable_unicode_properties" = "yes"; then
247      AC_DEFINE([SUPPORT_UCP], [], [
248  AC_ARG_WITH(link-size,      Define to enable support for Unicode properties])
249  [  --with-link-size=2    internal link size (2, 3, or 4 allowed)],  fi
250    LINK_SIZE=-DLINK_SIZE=$withval  
251  )  if test "$enable_stack_for_recursion" = "no"; then
252      AC_DEFINE([NO_RECURSE], [], [
253  dnl Handle --with-match-limit=n      PCRE uses recursive function calls to handle backtracking while
254        matching.  This can sometimes be a problem on systems that have
255  AC_ARG_WITH(match-limit,      stacks of limited size. Define NO_RECURSE to get a version that
256  [  --with-match-limit=10000000  default limit on internal looping],      doesn't use recursion in the match() function; instead it creates
257    MATCH_LIMIT=-DMATCH_LIMIT=$withval      its own stack by steam using pcre_recurse_malloc() to obtain memory
258  )      from the heap. For more detail, see the comments and other stuff
259        just above the match() function. On systems that support it,
260  dnl Handle --with-match-limit_recursion=n      "configure" can be used to set this in the Makefile
261        (use --disable-stack-for-recursion).])
262  AC_ARG_WITH(match-limit-recursion,  fi
263  [  --with-match-limit-recursion=10000000  default limit on internal recursion],  
264    MATCH_LIMIT_RECURSION=-DMATCH_LIMIT_RECURSION=$withval  AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
265  )    The value of NEWLINE determines the newline character sequence. On
266      Unix-like systems, "configure" can be used to override the default,
267  dnl Unicode character property support implies UTF-8 support    which is 10. The possible values are 10 (LF), 13 (CR), 3338 (CRLF),
268      or -1 (ANY).])
269    
270    AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
271      The value of LINK_SIZE determines the number of bytes used to store
272      links as offsets within the compiled regex. The default is 2, which
273      allows for compiled patterns up to 64K long. This covers the vast
274      majority of cases. However, PCRE can also be compiled to use 3 or 4
275      bytes instead. This allows for longer patterns in extreme cases. On
276      systems that support it, "configure" can be used to override this default.])
277    
278    AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
279      When calling PCRE via the POSIX interface, additional working storage
280      is required for holding the pointers to capturing substrings because
281      PCRE requires three integers per substring, whereas the POSIX
282      interface provides only two. If the number of expected substrings is
283      small, the wrapper function uses space on the stack, because this is
284      faster than using malloc() for each call. The threshold above which
285      the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
286      systems that support it, "configure" can be used to override this
287      default.])
288    
289    AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
290      The value of MATCH_LIMIT determines the default number of times the
291      internal match() function can be called during a single execution of
292      pcre_exec(). There is a runtime interface for setting a different
293      limit. The limit exists in order to catch runaway regular
294      expressions that take for ever to determine that they do not match.
295      The default is set very large so that it does not accidentally catch
296      legitimate cases. On systems that support it, "configure" can be
297      used to override this default default.])
298    
299    AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
300      The above limit applies to all calls of match(), whether or not they
301      increase the recursion depth. In some environments it is desirable
302      to limit the depth of recursive calls of match() more strictly, in
303      order to restrict the maximum amount of stack (or heap, if
304      NO_RECURSE is defined) that is used. The value of
305      MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
306      have any useful effect, it must be less than the value of
307      MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
308      There is a runtime method for setting a different limit. On systems
309      that support it, "configure" can be used to override the default.])
310    
311    AC_DEFINE([MAX_NAME_SIZE], [32], [
312      This limit is parameterized just in case anybody ever wants to
313      change it. Care must be taken if it is increased, because it guards
314      against integer overflow caused by enormously large patterns.])
315    
316    AC_DEFINE([MAX_NAME_COUNT], [10000], [
317      This limit is parameterized just in case anybody ever wants to
318      change it. Care must be taken if it is increased, because it guards
319      against integer overflow caused by enormously large patterns.])
320    
321    AC_DEFINE([MAX_DUPLENGTH], [30000], [
322      This limit is parameterized just in case anybody ever wants to
323      change it. Care must be taken if it is increased, because it guards
324      against integer overflow caused by enormously large patterns.])
325    
326    AH_VERBATIM([PCRE_DATA_SCOPE], [
327    /* If you are compiling for a system other than a Unix-like system or
328       Win32, and it needs some magic to be inserted before the definition
329       of a function that is exported by the library, define this macro to
330       contain the relevant magic. If you do not define this macro, it
331       defaults to "extern" for a C compiler and "extern C" for a C++
332       compiler on non-Win32 systems. This macro apears at the start of
333       every exported function that is part of the external API. It does
334       not appear on functions that are "external" in the C sense, but
335       which are internal to the library. */
336    #undef PCRE_DATA_SCOPE])
337    
338    if test "$enable_ebcdic" = "yes"; then
339      AC_DEFINE_UNQUOTED([EBCDIC], [], [
340        If you are compiling for a system that uses EBCDIC instead of ASCII
341        character codes, define this macro as 1. On systems that can use
342        "configure", this can be done via --enable-ebcdic.])
343    fi
344    
345    # Platform specific issues
346    NO_UNDEFINED=
347    EXPORT_ALL_SYMBOLS=
348    case $host_os in
349      cygwin* | mingw* )
350        if test X"$enable_shared" = Xyes; then
351          NO_UNDEFINED="-no-undefined"
352          EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
353        fi
354        ;;
355    esac
356    
357  if test "$UCP" != "" ; then  # The extra LDFLAGS for each particular library
358    UTF8=-DSUPPORT_UTF8  # (Note: The libpcre*_version bits are m4 variables, assigned above)
 fi  
359    
360  dnl "Export" these variables  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"
361    
362  AC_SUBST(BUILD_EXEEXT)  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"
 AC_SUBST(BUILD_OBJEXT)  
 AC_SUBST(CC_FOR_BUILD)  
 AC_SUBST(CXX_FOR_BUILD)  
 AC_SUBST(CFLAGS_FOR_BUILD)  
 AC_SUBST(CXXFLAGS_FOR_BUILD)  
 AC_SUBST(CXXLDFLAGS)  
 AC_SUBST(EBCDIC)  
 AC_SUBST(HAVE_MEMMOVE)  
 AC_SUBST(HAVE_STRERROR)  
 AC_SUBST(LINK_SIZE)  
 AC_SUBST(MATCH_LIMIT)  
 AC_SUBST(MATCH_LIMIT_RECURSION)  
 AC_SUBST(NEWLINE)  
 AC_SUBST(NO_RECURSE)  
 AC_SUBST(PCRE_LIB_VERSION)  
 AC_SUBST(PCRE_POSIXLIB_VERSION)  
 AC_SUBST(PCRE_CPPLIB_VERSION)  
 AC_SUBST(PCRE_VERSION)  
 AC_SUBST(POSIX_MALLOC_THRESHOLD)  
 AC_SUBST(UCP)  
 AC_SUBST(UTF8)  
363    
364  dnl Stuff to make MinGW work better. Special treatment is no longer  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"
 dnl needed for Cygwin.  
365    
366  case $host_os in  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
367  mingw* )  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
368      POSIX_OBJ=pcreposix.o  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
369      POSIX_LOBJ=pcreposix.lo  
370      POSIX_LIB=  # When we run 'make distcheck', use these arguments.
371      ON_WINDOWS=  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
372      NOT_ON_WINDOWS="#"  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
373      WIN_PREFIX=  
374      ;;  # Produce these files, in addition to config.h.
375  * )  AC_CONFIG_FILES(
376      ON_WINDOWS="#"          Makefile
377      NOT_ON_WINDOWS=          RunGrepTest
378      POSIX_OBJ=          RunTest
379      POSIX_LOBJ=          libpcre.pc
380      POSIX_LIB=libpcreposix.la          libpcrecpp.pc
381      WIN_PREFIX=          pcre-config
382      ;;          pcre.h
383  esac          pcre_stringpiece.h
384  AC_SUBST(WIN_PREFIX)          pcrecpparg.h
385  AC_SUBST(ON_WINDOWS)  )
386  AC_SUBST(NOT_ON_WINDOWS)  
387  AC_SUBST(POSIX_OBJ)  # Make the generated script files executable.
388  AC_SUBST(POSIX_LOBJ)  AC_CONFIG_COMMANDS([script-chmod], [chmod a+x RunTest RunGrepTest pcre-config])
389  AC_SUBST(POSIX_LIB)  
390    AC_OUTPUT
391    
392    # Print out a nice little message after configure is run displaying your
393    # chosen options.
394    #
395    cat <<EOF
396    
397    $PACKAGE-$VERSION configuration summary:
398    
399        Install prefix ......... : ${prefix}
400        C preprocessor ......... : ${CPP}
401        C compiler ............. : ${CC}
402        C++ preprocessor ....... : ${CXXCPP}
403        C++ compiler ........... : ${CXX}
404        Linker ................. : ${LD}
405        C preprocessor flags ... : ${CPPFLAGS}
406        C compiler flags ....... : ${CFLAGS}
407        C++ compiler flags ..... : ${CXXFLAGS}
408        Linker flags ........... : ${LDFLAGS}
409        Extra libraries ........ : ${LIBS}
410    
411        Build C++ library ...... : ${enable_cpp}
412        Enable UTF-8 support ... : ${enable_utf8}
413        Unicode properties ..... : ${enable_unicode_properties}
414        Newline char/sequence .. : ${enable_newline}
415        EBCDIC coding .......... : ${enable_ebcdic}
416        Use stack recursion .... : ${enable_stack_for_recursion}
417        POSIX mem threshold .... : ${with_posix_malloc_threshold}
418        Internal link size ..... : ${with_link_size}
419        Match limit ............ : ${with_match_limit}
420        Match limit recursion .. : ${with_match_limit_recursion}
421        Build shared libs ...... : ${enable_shared}
422        Build static libs ...... : ${enable_static}
423    
424  if test "x$enable_shared" = "xno" ; then  EOF
     AC_DEFINE([PCRE_STATIC],[1],[to link statically])  
 fi  
425    
426  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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