/[pcre]/code/trunk/configure.ac
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revision 321 by ph10, Wed Mar 5 17:10:45 2008 UTC revision 376 by ph10, Sun Mar 1 12:00:59 2009 UTC
# Line 7  dnl be defined as -RC2, for example. For Line 7  dnl be defined as -RC2, for example. For
7  dnl empty.  dnl empty.
8    
9  m4_define(pcre_major, [7])  m4_define(pcre_major, [7])
10  m4_define(pcre_minor, [7])  m4_define(pcre_minor, [9])
11  m4_define(pcre_prerelease, [-RC1])  m4_define(pcre_prerelease, [-RC1])
12  m4_define(pcre_date, [2008-03-05])  m4_define(pcre_date, [2009-02-27])
13    
14  # Libtool shared library interface versions (current:revision:age)  # Libtool shared library interface versions (current:revision:age)
15  m4_define(libpcre_version, [0:1:0])  m4_define(libpcre_version, [0:1:0])
# Line 60  then Line 60  then
60    fi    fi
61  fi  fi
62    
63    # AC_PROG_CXX will return "g++" even if no c++ compiler is installed.
64    # Check for that case, and just disable c++ code if g++ doesn't run.
65    AC_LANG_PUSH(C++)
66    AC_COMPILE_IFELSE(AC_LANG_PROGRAM([],[]),, CXX=""; CXXCP=""; CXXFLAGS="")
67    AC_LANG_POP
68    
69  AC_PROG_INSTALL  AC_PROG_INSTALL
70  AC_LIBTOOL_WIN32_DLL  AC_LIBTOOL_WIN32_DLL
# Line 277  if test "x$enable_cpp" = "xyes" -a -n "$ Line 282  if test "x$enable_cpp" = "xyes" -a -n "$
282  then  then
283  AC_LANG_PUSH(C++)  AC_LANG_PUSH(C++)
284    
285    # Older versions of pcre defined pcrecpp::no_arg, but in new versions
286    # it's called pcrecpp::RE::no_arg.  For backwards ABI compatibility,
287    # we want to make one an alias for the other.  Different systems do
288    # this in different ways.  Some systems, for instance, can do it via
289    # a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4).
290    OLD_LDFLAGS="$LDFLAGS"
291    for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \
292                "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do
293      AC_MSG_CHECKING([for alias support in the linker])
294      LDFLAGS="$OLD_LDFLAGS -Wl,$flag"
295      # We try to run the linker with this new ld flag.  If the link fails,
296      # we give up and remove the new flag from LDFLAGS.
297      AC_LINK_IFELSE(AC_LANG_PROGRAM([namespace pcrecpp {
298                                        class RE { static int no_arg; };
299                                        int RE::no_arg;
300                                      }],
301                                     []),
302                     [AC_MSG_RESULT([yes]);
303                      EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag";
304                      break;],
305                     AC_MSG_RESULT([no]))
306    done
307    LDFLAGS="$OLD_LDFLAGS"
308    
309  # 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
310  # (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
311  # 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.
# Line 286  AC_CHECK_HEADERS(bits/type_traits.h, [pc Line 315  AC_CHECK_HEADERS(bits/type_traits.h, [pc
315                                       [pcre_have_bits_type_traits="0"])                                       [pcre_have_bits_type_traits="0"])
316  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],  AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"],
317                                  [pcre_have_type_traits="0"])                                  [pcre_have_type_traits="0"])
318    
319  AC_LANG_POP  AC_LANG_POP
320  fi  fi
321  # Using AC_SUBST eliminates the need to include config.h in a public .h file  # Using AC_SUBST eliminates the need to include config.h in a public .h file
# Line 490  esac Line 520  esac
520  # The extra LDFLAGS for each particular library  # The extra LDFLAGS for each particular library
521  # (Note: The libpcre*_version bits are m4 variables, assigned above)  # (Note: The libpcre*_version bits are m4 variables, assigned above)
522    
523  EXTRA_LIBPCRE_LDFLAGS="$NO_UNDEFINED -version-info libpcre_version"  EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \
524                           $NO_UNDEFINED -version-info libpcre_version"
525    
526  EXTRA_LIBPCREPOSIX_LDFLAGS="$NO_UNDEFINED -version-info libpcreposix_version"  EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
527                                $NO_UNDEFINED -version-info libpcreposix_version"
528    
529  EXTRA_LIBPCRECPP_LDFLAGS="$NO_UNDEFINED $EXPORT_ALL_SYMBOLS -version-info libpcrecpp_version"  EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \
530                              $NO_UNDEFINED -version-info libpcrecpp_version \
531                              $EXPORT_ALL_SYMBOLS"
532    
533  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)  AC_SUBST(EXTRA_LIBPCRE_LDFLAGS)
534  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)  AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
# Line 505  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp Line 539  DISTCHECK_CONFIGURE_FLAGS="--enable-cpp
539  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)  AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
540    
541  # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is  # Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
542  # specified, the relevant library is available. If so, add it to LIBS.  # specified, the relevant library is available.
543    
544  if test "$enable_pcregrep_libz" = "yes"; then  if test "$enable_pcregrep_libz" = "yes"; then
545    if test "$HAVE_ZLIB_H" != "1"; then    if test "$HAVE_ZLIB_H" != "1"; then
# Line 516  if test "$enable_pcregrep_libz" = "yes"; Line 550  if test "$enable_pcregrep_libz" = "yes";
550      echo "** Cannot --enable-pcregrep-libz because libz was not found"      echo "** Cannot --enable-pcregrep-libz because libz was not found"
551      exit 1      exit 1
552    fi    fi
553    if test "$LIBS" = ""; then LIBS=-lz; else LIBS="$LIBS -lz"; fi    LIBZ="-lz"
554  fi  fi
555    AC_SUBST(LIBZ)
556    
557  if test "$enable_pcregrep_libbz2" = "yes"; then  if test "$enable_pcregrep_libbz2" = "yes"; then
558    if test "$HAVE_BZLIB_H" != "1"; then    if test "$HAVE_BZLIB_H" != "1"; then
# Line 528  if test "$enable_pcregrep_libbz2" = "yes Line 563  if test "$enable_pcregrep_libbz2" = "yes
563      echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"      echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
564      exit 1      exit 1
565    fi    fi
566    if test "$LIBS" = ""; then LIBS=-lbz2; else LIBS="$LIBS -lbz2"; fi    LIBBZ2="-lbz2"
567  fi  fi
568    AC_SUBST(LIBBZ2)
569    
570  # Similarly for --enable-pcretest-readline  # Similarly for --enable-pcretest-readline
571    
# Line 542  if test "$enable_pcretest_libreadline" = Line 578  if test "$enable_pcretest_libreadline" =
578      echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."      echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
579      exit 1      exit 1
580    fi    fi
581    if test "$LIBS" = ""; then LIBS=-lreadline; else LIBS="$LIBS -lreadline"; fi    LIBREADLINE="-lreadline"
582  fi  fi
583    AC_SUBST(LIBREADLINE)
584    
585  # Produce these files, in addition to config.h.  # Produce these files, in addition to config.h.
586  AC_CONFIG_FILES(  AC_CONFIG_FILES(
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