diff options
Diffstat (limited to 'epan/acinclude.m4')
| -rw-r--r-- | epan/acinclude.m4 | 104 |
1 files changed, 103 insertions, 1 deletions
diff --git a/epan/acinclude.m4 b/epan/acinclude.m4 index 77b339e106..a747c8b362 100644 --- a/epan/acinclude.m4 +++ b/epan/acinclude.m4 @@ -2,7 +2,7 @@ dnl Macros that test for specific features. dnl This file is part of the Autoconf packaging for Ethereal. dnl Copyright (C) 1998-2000 by Gerald Combs. dnl -dnl $Id: acinclude.m4,v 1.3 2003/08/21 07:17:09 guy Exp $ +dnl $Id: acinclude.m4,v 1.4 2003/12/06 16:35:18 gram Exp $ dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by @@ -182,3 +182,105 @@ changequote([, ])dnl AC_MSG_RESULT(not required) fi ]) + +# +# AC_ETHEREAL_LIBPCRE_CHECK +# +AC_DEFUN(AC_ETHEREAL_LIBPCRE_CHECK, +[ + if test "x$pcre_dir" != "x" + then + # + # The user specified a directory in which libpcre resides, + # so add the "include" subdirectory of that directory to + # the include file search path and the "lib" subdirectory + # of that directory to the library search path. + # + # XXX - if there's also a libpcre in a directory that's + # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't + # make us find the version in the specified directory, + # as the compiler and/or linker will search that other + # directory before it searches the specified directory. + # + ethereal_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -I$pcre_dir/include" + ethereal_save_CPPLAGS="$CPPLAGS" + CPPFLAGS="$CPPFLAGS -I$pcre_dir/include" + ethereal_save_LIBS="$LIBS" + PCRE_LIBS="-L$pcre_dir/lib -lpcre" + fi + + # + # Make sure we have "pcre.h". If we don't, it means we probably + # don't have libpcre, so don't use it. + # + AC_CHECK_HEADER(pcre.h,, + [ + if test "x$pcre_dir" != "x" + then + # + # The user used "--with-pcre=" to specify a directory + # containing libpcre, but we didn't find the header file + # there; that either means they didn't specify the + # right directory or are confused about whether libpcre + # is, in fact, installed. Report the error and give up. + # + AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre]) + else + if test "x$want_pcre" = "xyes" + then + # + # The user tried to force us to use the library, but we + # couldn't find the header file; report an error. + # + AC_MSG_ERROR(Header file pcre.h not found.) + else + # + # We couldn't find the header file; don't use the + # library, as it's probably not present. + # + want_pcre=no + fi + fi + ]) + + if test "x$want_pcre" != "xno" + then + # + # Well, we at least have the pcre header file. + # + # We're only using standard functions from libpcre, + # so we don't need to perform extra checks. + # + AC_CHECK_LIB(pcre, pcre_compile, + [ + if test "x$pcre_dir" != "x" + then + # + # Put the "-I" and "-L" flags for pcre at + # the beginning of CFLAGS, CPPFLAGS, and + # LIBS. + # + PCRE_LIBS="-L$pcre_dir/lib -lpcre $ethereal_save_LIBS" + else + PCRE_LIBS="-lpcre" + fi + AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library]) + ],[ + if test "x$pcre_dir" != "x" + then + # + # Restore the versions of CFLAGS, CPPFLAGS, + # and LIBS before we added the "-with-pcre=" + # directory, as we didn't actually find + # pcre there. + # + CFLAGS="$ethereal_save_CFLAGS" + CPPFLAGS="$ethereal_save_CPPLAGS" + PCRE_LIBS="" + fi + want_pcre=no + ]) + AC_SUBST(PCRE_LIBS) + fi +]) |