/[pcre]/code/trunk/configure.ac
ViewVC logotype

Diff of /code/trunk/configure.ac

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 93 by nigel, Sat Feb 24 21:41:42 2007 UTC revision 471 by ph10, Fri Dec 11 15:11:55 2009 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    m4_define(pcre_major, [8])
10    m4_define(pcre_minor, [01])
11    m4_define(pcre_prerelease, [])
12    m4_define(pcre_date, [2009-12-11])
13    
14    # 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  dnl This is required at the start; the name is the name of a file  AC_PREREQ(2.57)
20  dnl it should be seeing, to verify it is in the same directory.  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    
25    # The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
26    # "-g" for any other compiler. There doesn't seem to be a standard way of
27    # getting rid of the -g (which I don't think is needed for a production
28    # library). This fudge seems to achieve the necessary. First, we remember the
29    # externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
30    # AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
31    # set, they will be set to Autoconf's defaults. Afterwards, if the original
32    # values were not set, remove the -g from the Autoconf defaults.
33    # (PH 02-May-07)
34    
35  AC_INIT(dftables.c)  remember_set_CFLAGS="$CFLAGS"
36  AC_CONFIG_SRCDIR([pcre.h])  remember_set_CXXFLAGS="$CXXFLAGS"
37    
38  dnl A safety precaution  AC_PROG_CC
39    AC_PROG_CXX
40    
41  AC_PREREQ(2.57)  if test "x$remember_set_CFLAGS" = "x"
42    then
43      if test "$CFLAGS" = "-g -O2"
44      then
45        CFLAGS="-O2"
46      elif test "$CFLAGS" = "-g"
47      then
48        CFLAGS=""
49      fi
50    fi
51    
52    if test "x$remember_set_CXXFLAGS" = "x"
53    then
54      if test "$CXXFLAGS" = "-g -O2"
55      then
56        CXXFLAGS="-O2"
57      elif test "$CXXFLAGS" = "-g"
58      then
59        CXXFLAGS=""
60      fi
61    fi
62    
63  dnl Arrange to build config.h from config.h.in.  # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
64  dnl Manual says this macro should come right after AC_INIT.  # Check for that case, and just disable c++ code if g++ doesn't run.
65  AC_CONFIG_HEADER(config.h)  AC_LANG_PUSH(C++)
66    AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")
67    AC_LANG_POP
68    
69  dnl Default values for miscellaneous macros  AC_PROG_INSTALL
70    AC_LIBTOOL_WIN32_DLL
71    AC_PROG_LIBTOOL
72    AC_PROG_LN_S
73    
74  POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=10  PCRE_MAJOR="pcre_major"
75    PCRE_MINOR="pcre_minor"
76    PCRE_PRERELEASE="pcre_prerelease"
77    PCRE_DATE="pcre_date"
78    
79    AC_SUBST(PCRE_MAJOR)
80    AC_SUBST(PCRE_MINOR)
81    AC_SUBST(PCRE_PRERELEASE)
82    AC_SUBST(PCRE_DATE)
83    
84  dnl Provide versioning information for libtool shared libraries that  # Set a more sensible default value for $(htmldir).
85  dnl are built by default on Unix systems.  if test "x$htmldir" = 'x${docdir}'
86    then
87      htmldir='${docdir}/html'
88    fi
89    
90  PCRE_LIB_VERSION=0:1:0  # Handle --disable-cpp
91  PCRE_POSIXLIB_VERSION=0:0:0  AC_ARG_ENABLE(cpp,
92  PCRE_CPPLIB_VERSION=0:0:0                AS_HELP_STRING([--disable-cpp],
93                                 [disable C++ support]),
94                  , enable_cpp=yes)
95    
96    # Handle --enable-rebuild-chartables
97    AC_ARG_ENABLE(rebuild-chartables,
98                  AS_HELP_STRING([--enable-rebuild-chartables],
99                                 [rebuild character tables in current locale]),
100                  , enable_rebuild_chartables=no)
101    
102  dnl Find the PCRE version from the pcre.h file. The PCRE_VERSION variable is  # Handle --enable-utf8 (disabled by default)
103  dnl substituted in pcre-config.in.  AC_ARG_ENABLE(utf8,
104                  AS_HELP_STRING([--enable-utf8],
105                                 [enable UTF-8 support (incompatible with --enable-ebcdic)]),
106                  , enable_utf8=unset)
107    
108  PCRE_MAJOR=`grep '#define PCRE_MAJOR' ${srcdir}/pcre.h | cut -c 29-`  # Handle --enable-unicode-properties
109  PCRE_MINOR=`grep '#define PCRE_MINOR' ${srcdir}/pcre.h | cut -c 29-`  AC_ARG_ENABLE(unicode-properties,
110  PCRE_PRERELEASE=`grep '#define PCRE_PRERELEASE' ${srcdir}/pcre.h | cut -c 29-`                AS_HELP_STRING([--enable-unicode-properties],
111  PCRE_VERSION=${PCRE_MAJOR}.${PCRE_MINOR}${PCRE_PRERELEASE}                               [enable Unicode properties support (implies --enable-utf8)]),
112                  , enable_unicode_properties=no)
113    
114    # Handle --enable-newline=NL
115    dnl AC_ARG_ENABLE(newline,
116    dnl               AS_HELP_STRING([--enable-newline=NL],
117    dnl                              [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
118    dnl               , enable_newline=lf)
119    
120  dnl Handle --disable-cpp  # Separate newline options
121    ac_pcre_newline=lf
122    AC_ARG_ENABLE(newline-is-cr,
123                  AS_HELP_STRING([--enable-newline-is-cr],
124                                 [use CR as newline character]),
125                  ac_pcre_newline=cr)
126    AC_ARG_ENABLE(newline-is-lf,
127                  AS_HELP_STRING([--enable-newline-is-lf],
128                                 [use LF as newline character (default)]),
129                  ac_pcre_newline=lf)
130    AC_ARG_ENABLE(newline-is-crlf,
131                  AS_HELP_STRING([--enable-newline-is-crlf],
132                                 [use CRLF as newline sequence]),
133                  ac_pcre_newline=crlf)
134    AC_ARG_ENABLE(newline-is-anycrlf,
135                  AS_HELP_STRING([--enable-newline-is-anycrlf],
136                                 [use CR, LF, or CRLF as newline sequence]),
137                  ac_pcre_newline=anycrlf)
138    AC_ARG_ENABLE(newline-is-any,
139                  AS_HELP_STRING([--enable-newline-is-any],
140                                 [use any valid Unicode newline sequence]),
141                  ac_pcre_newline=any)
142    enable_newline="$ac_pcre_newline"
143    
144    # Handle --enable-bsr-anycrlf
145    AC_ARG_ENABLE(bsr-anycrlf,
146                  AS_HELP_STRING([--enable-bsr-anycrlf],
147                                 [\R matches only CR, LF, CRLF by default]),
148                  , enable_bsr_anycrlf=no)
149    
150  AC_ARG_ENABLE(cpp,  # Handle --enable-ebcdic
151  [  --disable-cpp           disable C++ support],  AC_ARG_ENABLE(ebcdic,
152  want_cpp="$enableval", want_cpp=yes)                AS_HELP_STRING([--enable-ebcdic],
153                                 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf8; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
154                  , enable_ebcdic=no)
155    
156  dnl Checks for programs.  # Handle --disable-stack-for-recursion
157    AC_ARG_ENABLE(stack-for-recursion,
158                  AS_HELP_STRING([--disable-stack-for-recursion],
159                                 [don't use stack recursion when matching]),
160                  , enable_stack_for_recursion=yes)
161    
162    # Handle --enable-pcregrep-libz
163    AC_ARG_ENABLE(pcregrep-libz,
164                  AS_HELP_STRING([--enable-pcregrep-libz],
165                                 [link pcregrep with libz to handle .gz files]),
166                  , enable_pcregrep_libz=no)
167    
168    # Handle --enable-pcregrep-libbz2
169    AC_ARG_ENABLE(pcregrep-libbz2,
170                  AS_HELP_STRING([--enable-pcregrep-libbz2],
171                                 [link pcregrep with libbz2 to handle .bz2 files]),
172                  , enable_pcregrep_libbz2=no)
173    
174    # Handle --enable-pcretest-libreadline
175    AC_ARG_ENABLE(pcretest-libreadline,
176                  AS_HELP_STRING([--enable-pcretest-libreadline],
177                                 [link pcretest with libreadline]),
178                  , enable_pcretest_libreadline=no)
179    
180  AC_PROG_CC  # Handle --with-posix-malloc-threshold=NBYTES
181    AC_ARG_WITH(posix-malloc-threshold,
182                AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
183                               [threshold for POSIX malloc usage (default=10)]),
184                , with_posix_malloc_threshold=10)
185    
186  dnl Test for C++ for the C++ wrapper libpcrecpp. It seems, however, that  # Handle --with-link-size=N
187  dnl AC_PROC_CXX will set $CXX to "g++" when no C++ compiler is installed, even  AC_ARG_WITH(link-size,
188  dnl though that is completely bogus. (This may happen only on certain systems              AS_HELP_STRING([--with-link-size=N],
189  dnl with certain versions of autoconf, of course.) An attempt to include this                             [internal link size (2, 3, or 4 allowed; default=2)]),
190  dnl test inside a check for want_cpp was criticized by a libtool expert, who              , with_link_size=2)
 dnl tells me that it isn't allowed.  
191    
192  AC_PROG_CXX  # Handle --with-match-limit=N
193    AC_ARG_WITH(match-limit,
194                AS_HELP_STRING([--with-match-limit=N],
195                               [default limit on internal looping (default=10000000)]),
196                , with_match_limit=10000000)
197    
198    # Handle --with-match-limit_recursion=N
199    #
200    # Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
201    # symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
202    # value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
203    # different numeric value (or even the same numeric value as MATCH_LIMIT,
204    # though no longer defined in terms of the latter).
205    #
206    AC_ARG_WITH(match-limit-recursion,
207                AS_HELP_STRING([--with-match-limit-recursion=N],
208                               [default limit on internal recursion (default=MATCH_LIMIT)]),
209                , with_match_limit_recursion=MATCH_LIMIT)
210    
211    # Make sure that if enable_unicode_properties was set, that UTF-8 support
212    # is enabled.
213    #
214    if test "x$enable_unicode_properties" = "xyes"
215    then
216      if test "x$enable_utf8" = "xno"
217      then
218        AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
219      fi
220      enable_utf8=yes
221    fi
222    
223  dnl The icc compiler has the same options as gcc, so let the rest of the  if test "x$enable_utf8" = "xunset"
224  dnl configure script think it has gcc when setting up dnl options etc.  then
225  dnl This is a nasty hack which no longer seems necessary with the update    enable_utf8=no
226  dnl to the latest libtool files, so I have commented it out.  fi
 dnl  
 dnl if test "$CC" = "icc" ; then GCC=yes ; fi  
227    
228  AC_PROG_INSTALL  # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
229  AC_LIBTOOL_WIN32_DLL  # Also check that UTF-8 support is not requested, because PCRE cannot handle
230  AC_PROG_LIBTOOL  # EBCDIC and UTF-8 in the same build. To do so it would need to use different
231    # character constants depending on the mode.
232    #
233    if test "x$enable_ebcdic" = "xyes"
234    then
235      enable_rebuild_chartables=yes
236      if test "x$enable_utf8" = "xyes"
237      then
238        AC_MSG_ERROR([support for EBCDIC and UTF-8 cannot be enabled at the same time])
239      fi
240    fi
241    
242    # Convert the newline identifier into the appropriate integer value.
243    case "$enable_newline" in
244      lf)      ac_pcre_newline_value=10   ;;
245      cr)      ac_pcre_newline_value=13   ;;
246      crlf)    ac_pcre_newline_value=3338 ;;
247      anycrlf) ac_pcre_newline_value=-2   ;;
248      any)     ac_pcre_newline_value=-1   ;;
249      *)
250      AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
251      ;;
252    esac
253    
254  dnl We need to find a compiler for compiling a program to run on the local host  # Check argument to --with-link-size
255  dnl while building. It needs to be different from CC when cross-compiling.  case "$with_link_size" in
256  dnl There is a macro called AC_PROG_CC_FOR_BUILD in the GNU archive for    2|3|4) ;;
257  dnl figuring this out automatically. Unfortunately, it does not work with the    *)
258  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])
259  dnl same values as the "main" compiler. People who are cross-compiling will    ;;
260  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)'}  
261    
262  dnl Checks for header files.  AH_TOP([
263    /* On Unix-like systems config.h.in is converted by "configure" into config.h.
264    Some other environments also support the use of "configure". PCRE is written in
265    Standard C, but there are a few non-standard things it can cope with, allowing
266    it to run on SunOS4 and other "close to standard" systems.
267    
268    If you are going to build PCRE "by hand" on a system without "configure" you
269    should copy the distributed config.h.generic to config.h, and then set up the
270    macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to
271    all of your compile commands, so that config.h is included at the start of
272    every source.
273    
274    Alternatively, you can avoid editing by using -D on the compiler command line
275    to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H.
276    
277    PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if
278    HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set
279    them both to 0; an emulation function will be used. */])
280    
281    # Checks for header files.
282  AC_HEADER_STDC  AC_HEADER_STDC
283  AC_CHECK_HEADERS(limits.h)  AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h)
   
 dnl The files below are C++ header files. One person told me (PH) that  
 dnl AC_LANG_CPLUSPLUS unsets CXX if it was explicitly set to something which  
 dnl doesn't work. However, this doesn't always seem to be the case.  
284    
285  if test "x$want_cpp" = "xyes" -a -n "$CXX"  # The files below are C++ header files.
286    pcre_have_type_traits="0"
287    pcre_have_bits_type_traits="0"
288    if test "x$enable_cpp" = "xyes" -a -n "$CXX"
289  then  then
290  AC_LANG_SAVE  AC_LANG_PUSH(C++)
 AC_LANG_CPLUSPLUS  
291    
292  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
293  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,
294  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
295    # this in different ways.  Some systems, for instance, can do it via
296    # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
297    OLD_LDFLAGS="$LDFLAGS"
298    for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
299                "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
300      AC_MSG_CHECKING([for alias support in the linker])
301      LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
302      # We try to run the linker with this new ld flag.  If the link fails,
303      # we give up and remove the new flag from LDFLAGS.
304      AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
305                                        class RE { static int no_arg; };
306                                        int RE::no_arg;
307                                      }],
308                                     []),
309                     [AC_MSG_RESULT([yes]);
310                      EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
311                      break;],
312                     AC_MSG_RESULT([no]))
313    done
314    LDFLAGS="$OLD_LDFLAGS"
315    
316    # We could be more clever here, given we're doing AC_SUBST with this
317    # (eg set a var to be the name of the include file we want). But we're not
318    # so it's easy to change back to 'regular' autoconf vars if we needed to.
319  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],  AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"],
320                           [pcre_have_cpp_headers="0"])                           [pcre_have_cpp_headers="0"])
321  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"],
322                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
323  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
324                                  [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  
325    
326  dnl From the above, we now have enough info to know if C++ is fully installed  AC_LANG_POP
 if test "x$want_cpp" = "xyes" -a -n "$CXX" -a "$pcre_have_cpp_headers" = 1; then  
   MAYBE_CPP_TARGETS='$(CPP_TARGETS)'  
   HAVE_CPP=  
 else  
   MAYBE_CPP_TARGETS=  
   HAVE_CPP="#"  
327  fi  fi
328  AC_SUBST(MAYBE_CPP_TARGETS)  # Using AC_SUBST eliminates the need to include config.h in a public .h file
329  AC_SUBST(HAVE_CPP)  AC_SUBST(pcre_have_type_traits)
330    AC_SUBST(pcre_have_bits_type_traits)
331    
332    # Conditional compilation
333    AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
334    AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
335    
336  dnl Checks for typedefs, structures, and compiler characteristics.  # Checks for typedefs, structures, and compiler characteristics.
337    
338  AC_C_CONST  AC_C_CONST
339  AC_TYPE_SIZE_T  AC_TYPE_SIZE_T
340    
341  AC_CHECK_TYPES([long long], [pcre_have_long_long="1"], [pcre_have_long_long="0"])  pcre_have_strotolonglong=0
342  AC_CHECK_TYPES([unsigned long long], [pcre_have_ulong_long="1"], [pcre_have_ulong_long="0"])  AC_CHECK_FUNCS(strtoq strtoll _strtoi64, [pcre_have_strotolonglong="1"; break])
343    # If we can't convert a string to a long long, pretend we don't even
344    # have a long long.
345    if test $pcre_have_strotolonglong = "0"; then
346       pcre_have_long_long="0"
347       pcre_have_ulong_long="0"
348    else
349      AC_CHECK_TYPES([long long],
350                     [pcre_have_long_long="1"],
351                     [pcre_have_long_long="0"])
352      AC_CHECK_TYPES([unsigned long long],
353                     [pcre_have_ulong_long="1"],
354                     [pcre_have_ulong_long="0"])
355    fi
356  AC_SUBST(pcre_have_long_long)  AC_SUBST(pcre_have_long_long)
357  AC_SUBST(pcre_have_ulong_long)  AC_SUBST(pcre_have_ulong_long)
358    
359  dnl Checks for library functions.  # Checks for library functions.
   
 AC_CHECK_FUNCS(bcopy memmove strerror strtoq strtoll)  
   
 dnl Handle --enable-utf8  
   
 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  
 )  
   
 dnl Handle --enable-newline-is-cr  
   
 AC_ARG_ENABLE(newline-is-cr,  
 [  --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-newline-is-any  
   
 AC_ARG_ENABLE(newline-is-any,  
 [  --enable-newline-is-any  use any Unicode newline sequence],  
 if test "$enableval" = "yes"; then  
   NEWLINE=-DNEWLINE=-1  
 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  
 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.  
360    
361  dnl Handle --with-posix-malloc-threshold=n  AC_CHECK_FUNCS(bcopy memmove strerror)
362    
363  AC_ARG_WITH(posix-malloc-threshold,  # Check for the availability of libz (aka zlib)
 [  --with-posix-malloc-threshold=10  threshold for POSIX malloc usage],  
   POSIX_MALLOC_THRESHOLD=-DPOSIX_MALLOC_THRESHOLD=$withval  
 )  
364    
365  dnl Handle --with-link-size=n  AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
366    AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
367    
368  AC_ARG_WITH(link-size,  # Check for the availability of libbz2
 [  --with-link-size=2    internal link size (2, 3, or 4 allowed)],  
   LINK_SIZE=-DLINK_SIZE=$withval  
 )  
   
 dnl Handle --with-match-limit=n  
369    
370  AC_ARG_WITH(match-limit,  AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
371  [  --with-match-limit=10000000  default limit on internal looping],  AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
   MATCH_LIMIT=-DMATCH_LIMIT=$withval  
 )  
372    
373  dnl Handle --with-match-limit_recursion=n  # Check for the availabiity of libreadline
374    
375  AC_ARG_WITH(match-limit-recursion,  AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1])
376  [  --with-match-limit-recursion=10000000  default limit on internal recursion],  AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1])
377    MATCH_LIMIT_RECURSION=-DMATCH_LIMIT_RECURSION=$withval  AC_CHECK_LIB([readline], [readline], [HAVE_LIB_READLINE=1])
 )  
378    
379  dnl Unicode character property support implies UTF-8 support  # This facilitates -ansi builds under Linux
380    dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc])
381    
382  if test "$UCP" != "" ; then  PCRE_STATIC_CFLAG=""
383    UTF8=-DSUPPORT_UTF8  if test "x$enable_shared" = "xno" ; then
384  fi    AC_DEFINE([PCRE_STATIC], [1], [
385        Define if linking statically (TODO: make nice with Libtool)])
386      PCRE_STATIC_CFLAG="-DPCRE_STATIC"
387    fi
388    AC_SUBST(PCRE_STATIC_CFLAG)
389    
390    # Here is where pcre specific defines are handled
391    
392    if test "$enable_utf8" = "yes"; then
393      AC_DEFINE([SUPPORT_UTF8], [], [
394        Define to enable support for the UTF-8 Unicode encoding. This will
395        work even in an EBCDIC environment, but it is incompatible with
396        the EBCDIC macro. That is, PCRE can support *either* EBCDIC code
397        *or* ASCII/UTF-8, but not both at once.])
398    fi
399    
400    if test "$enable_unicode_properties" = "yes"; then
401      AC_DEFINE([SUPPORT_UCP], [], [
402        Define to enable support for Unicode properties])
403    fi
404    
405    if test "$enable_stack_for_recursion" = "no"; then
406      AC_DEFINE([NO_RECURSE], [], [
407        PCRE uses recursive function calls to handle backtracking while
408        matching. This can sometimes be a problem on systems that have
409        stacks of limited size. Define NO_RECURSE to get a version that
410        doesn't use recursion in the match() function; instead it creates
411        its own stack by steam using pcre_recurse_malloc() to obtain memory
412        from the heap. For more detail, see the comments and other stuff
413        just above the match() function. On systems that support it,
414        "configure" can be used to set this in the Makefile
415        (use --disable-stack-for-recursion).])
416    fi
417    
418    if test "$enable_pcregrep_libz" = "yes"; then
419      AC_DEFINE([SUPPORT_LIBZ], [], [
420        Define to allow pcregrep to be linked with libz, so that it is
421        able to handle .gz files.])
422    fi
423    
424    if test "$enable_pcregrep_libbz2" = "yes"; then
425      AC_DEFINE([SUPPORT_LIBBZ2], [], [
426        Define to allow pcregrep to be linked with libbz2, so that it is
427        able to handle .bz2 files.])
428    fi
429    
430    if test "$enable_pcretest_libreadline" = "yes"; then
431      AC_DEFINE([SUPPORT_LIBREADLINE], [], [
432        Define to allow pcretest to be linked with libreadline.])
433    fi
434    
435    AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
436      The value of NEWLINE determines the newline character sequence. On
437      systems that support it, "configure" can be used to override the
438      default, which is 10. The possible values are 10 (LF), 13 (CR),
439      3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).])
440    
441    if test "$enable_bsr_anycrlf" = "yes"; then
442      AC_DEFINE([BSR_ANYCRLF], [], [
443        By default, the \R escape sequence matches any Unicode line ending
444        character or sequence of characters. If BSR_ANYCRLF is defined, this is
445        changed so that backslash-R matches only CR, LF, or CRLF. The build-
446        time default can be overridden by the user of PCRE at runtime. On
447        systems that support it, "configure" can be used to override the
448        default.])
449    fi
450    
451    AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [
452      The value of LINK_SIZE determines the number of bytes used to store
453      links as offsets within the compiled regex. The default is 2, which
454      allows for compiled patterns up to 64K long. This covers the vast
455      majority of cases. However, PCRE can also be compiled to use 3 or 4
456      bytes instead. This allows for longer patterns in extreme cases. On
457      systems that support it, "configure" can be used to override this default.])
458    
459    AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
460      When calling PCRE via the POSIX interface, additional working storage
461      is required for holding the pointers to capturing substrings because
462      PCRE requires three integers per substring, whereas the POSIX
463      interface provides only two. If the number of expected substrings is
464      small, the wrapper function uses space on the stack, because this is
465      faster than using malloc() for each call. The threshold above which
466      the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On
467      systems that support it, "configure" can be used to override this
468      default.])
469    
470    AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [
471      The value of MATCH_LIMIT determines the default number of times the
472      internal match() function can be called during a single execution of
473      pcre_exec(). There is a runtime interface for setting a different
474      limit. The limit exists in order to catch runaway regular
475      expressions that take for ever to determine that they do not match.
476      The default is set very large so that it does not accidentally catch
477      legitimate cases. On systems that support it, "configure" can be
478      used to override this default default.])
479    
480    AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [
481      The above limit applies to all calls of match(), whether or not they
482      increase the recursion depth. In some environments it is desirable
483      to limit the depth of recursive calls of match() more strictly, in
484      order to restrict the maximum amount of stack (or heap, if
485      NO_RECURSE is defined) that is used. The value of
486      MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
487      have any useful effect, it must be less than the value of
488      MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT.
489      There is a runtime method for setting a different limit. On systems
490      that support it, "configure" can be used to override the default.])
491    
492    AC_DEFINE([MAX_NAME_SIZE], [32], [
493      This limit is parameterized just in case anybody ever wants to
494      change it. Care must be taken if it is increased, because it guards
495      against integer overflow caused by enormously large patterns.])
496    
497    AC_DEFINE([MAX_NAME_COUNT], [10000], [
498      This limit is parameterized just in case anybody ever wants to
499      change it. Care must be taken if it is increased, because it guards
500      against integer overflow caused by enormously large patterns.])
501    
502    AH_VERBATIM([PCRE_EXP_DEFN], [
503    /* If you are compiling for a system other than a Unix-like system or
504       Win32, and it needs some magic to be inserted before the definition
505       of a function that is exported by the library, define this macro to
506       contain the relevant magic. If you do not define this macro, it
507       defaults to "extern" for a C compiler and "extern C" for a C++
508       compiler on non-Win32 systems. This macro apears at the start of
509       every exported function that is part of the external API. It does
510       not appear on functions that are "external" in the C sense, but
511       which are internal to the library. */
512    #undef PCRE_EXP_DEFN])
513    
514    if test "$enable_ebcdic" = "yes"; then
515      AC_DEFINE_UNQUOTED([EBCDIC], [], [
516        If you are compiling for a system that uses EBCDIC instead of ASCII
517        character codes, define this macro as 1. On systems that can use
518        "configure", this can be done via --enable-ebcdic. PCRE will then
519        assume that all input strings are in EBCDIC. If you do not define
520        this macro, PCRE will assume input strings are ASCII or UTF-8 Unicode.
521        It is not possible to build a version of PCRE that supports both
522        EBCDIC and UTF-8.])
523    fi
524    
525    # Platform specific issues
526    NO_UNDEFINED=
527    EXPORT_ALL_SYMBOLS=
528    case $host_os in
529      cygwin* | mingw* )
530        if test X"$enable_shared" = Xyes; then
531          NO_UNDEFINED="-no-undefined"
532          EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols"
533        fi
534        ;;
535    esac
536    
537  dnl "Export" these variables  # The extra LDFLAGS for each particular library
538    # (Note: The libpcre*_version bits are m4 variables, assigned above)
539    
540  AC_SUBST(BUILD_EXEEXT)  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
541  AC_SUBST(BUILD_OBJEXT)                         $NO_UNDEFINED -version-info libpcre_version"
 AC_SUBST(CC_FOR_BUILD)  
 AC_SUBST(CXX_FOR_BUILD)  
 AC_SUBST(CFLAGS_FOR_BUILD)  
 AC_SUBST(CXXFLAGS_FOR_BUILD)  
 AC_SUBST(CXXLDFLAGS)  
 AC_SUBST(EBCDIC)  
 AC_SUBST(HAVE_MEMMOVE)  
 AC_SUBST(HAVE_STRERROR)  
 AC_SUBST(LINK_SIZE)  
 AC_SUBST(MATCH_LIMIT)  
 AC_SUBST(MATCH_LIMIT_RECURSION)  
 AC_SUBST(NEWLINE)  
 AC_SUBST(NO_RECURSE)  
 AC_SUBST(PCRE_LIB_VERSION)  
 AC_SUBST(PCRE_POSIXLIB_VERSION)  
 AC_SUBST(PCRE_CPPLIB_VERSION)  
 AC_SUBST(PCRE_VERSION)  
 AC_SUBST(POSIX_MALLOC_THRESHOLD)  
 AC_SUBST(UCP)  
 AC_SUBST(UTF8)  
542    
543  dnl Stuff to make MinGW work better. Special treatment is no longer  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
544  dnl needed for Cygwin.                              $NO_UNDEFINED -version-info libpcreposix_version"
545    
546  case $host_os in  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
547  mingw* )                            $NO_UNDEFINED -version-info libpcrecpp_version \
548      POSIX_OBJ=pcreposix.o                            $EXPORT_ALL_SYMBOLS"
549      POSIX_LOBJ=pcreposix.lo  
550      POSIX_LIB=  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
551      ON_WINDOWS=  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
552      NOT_ON_WINDOWS="#"  AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS)
553      WIN_PREFIX=  
554      ;;  # When we run 'make distcheck', use these arguments.
555  * )  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp --enable-unicode-properties"
556      ON_WINDOWS="#"  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
557      NOT_ON_WINDOWS=  
558      POSIX_OBJ=  # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
559      POSIX_LOBJ=  # specified, the relevant library is available.
560      POSIX_LIB=libpcreposix.la  
561      WIN_PREFIX=  if test "$enable_pcregrep_libz" = "yes"; then
562      ;;    if test "$HAVE_ZLIB_H" != "1"; then
563  esac      echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
564  AC_SUBST(WIN_PREFIX)      exit 1
565  AC_SUBST(ON_WINDOWS)    fi
566  AC_SUBST(NOT_ON_WINDOWS)    if test "$HAVE_LIBZ" != "1"; then
567  AC_SUBST(POSIX_OBJ)      echo "** Cannot --enable-pcregrep-libz because libz was not found"
568  AC_SUBST(POSIX_LOBJ)      exit 1
569  AC_SUBST(POSIX_LIB)    fi
570      LIBZ="-lz"
571    fi
572    AC_SUBST(LIBZ)
573    
574    if test "$enable_pcregrep_libbz2" = "yes"; then
575      if test "$HAVE_BZLIB_H" != "1"; then
576        echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
577        exit 1
578      fi
579      if test "$HAVE_LIBBZ2" != "1"; then
580        echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
581        exit 1
582      fi
583      LIBBZ2="-lbz2"
584    fi
585    AC_SUBST(LIBBZ2)
586    
587    # Similarly for --enable-pcretest-readline
588    
589    if test "$enable_pcretest_libreadline" = "yes"; then
590      if test "$HAVE_READLINE_H" != "1"; then
591        echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
592        exit 1
593      fi
594      if test "$HAVE_HISTORY_H" != "1"; then
595        echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
596        exit 1
597      fi
598      LIBREADLINE="-lreadline"
599    fi
600    AC_SUBST(LIBREADLINE)
601    
602    # Produce these files, in addition to config.h.
603    AC_CONFIG_FILES(
604            Makefile
605            libpcre.pc
606            libpcreposix.pc
607            libpcrecpp.pc
608            pcre-config
609            pcre.h
610            pcre_stringpiece.h
611            pcrecpparg.h
612    )
613    
614    # Make the generated script files executable.
615    AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config])
616    
617    # Make sure that pcre_chartables.c is removed in case the method for
618    # creating it was changed by reconfiguration.
619    AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c])
620    
621    AC_OUTPUT
622    
623    # Print out a nice little message after configure is run displaying your
624    # chosen options.
625    
626    cat <<EOF
627    
628    $PACKAGE-$VERSION configuration summary:
629    
630        Install prefix .................. : ${prefix}
631        C preprocessor .................. : ${CPP}
632        C compiler ...................... : ${CC}
633        C++ preprocessor ................ : ${CXXCPP}
634        C++ compiler .................... : ${CXX}
635        Linker .......................... : ${LD}
636        C preprocessor flags ............ : ${CPPFLAGS}
637        C compiler flags ................ : ${CFLAGS}
638        C++ compiler flags .............. : ${CXXFLAGS}
639        Linker flags .................... : ${LDFLAGS}
640        Extra libraries ................. : ${LIBS}
641    
642        Build C++ library ............... : ${enable_cpp}
643        Enable UTF-8 support ............ : ${enable_utf8}
644        Unicode properties .............. : ${enable_unicode_properties}
645        Newline char/sequence ........... : ${enable_newline}
646        \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
647        EBCDIC coding ................... : ${enable_ebcdic}
648        Rebuild char tables ............. : ${enable_rebuild_chartables}
649        Use stack recursion ............. : ${enable_stack_for_recursion}
650        POSIX mem threshold ............. : ${with_posix_malloc_threshold}
651        Internal link size .............. : ${with_link_size}
652        Match limit ..................... : ${with_match_limit}
653        Match limit recursion ........... : ${with_match_limit_recursion}
654        Build shared libs ............... : ${enable_shared}
655        Build static libs ............... : ${enable_static}
656        Link pcregrep with libz ......... : ${enable_pcregrep_libz}
657        Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
658        Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
659    
660  if test "x$enable_shared" = "xno" ; then  EOF
     AC_DEFINE([PCRE_STATIC],[1],[to link statically])  
 fi  
661    
662  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 libpcrecpp.pc:libpcrecpp.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])  

Legend:
Removed from v.93  
changed lines
  Added in v.471

  ViewVC Help
Powered by ViewVC 1.1.5