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dnl @synopsis CHECK_LIBPCRE([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

dnl

dnl This macro searches for an installed libpcre library. If nothing

dnl was specified when calling configure, it searches first in /usr/local

dnl and then in /usr. If the --with-libpcre=DIR is specified, it will try

dnl to find it in DIR/include/pcre.h and DIR/lib/libpcre.a. If --without-libpcre

dnl is specified, the library is not searched at all.

dnl

dnl It defines the symbol HAVE_LIBPCRE if the library is found. You should

dnl use autoheader to include a definition for this symbol in a config.h

dnl file.

dnl

dnl Sources files should then use something like

dnl

dnl #ifdef HAVE_LIBPCRE

dnl #include <pcre.h>

dnl #endif /* HAVE_LIBPCRE */

dnl

dnl @version 1.0

dnl based on CHECK_ZLIB by Loic Dachary <loic@senga.org>

dnl

 

AC_DEFUN(CHECK_LIBPCRE,

#

# Handle user hints

#

         [AC_MSG_CHECKING(if libpcre is wanted)

         AC_ARG_WITH(libpcre,

                     [  --with-libpcre=DIR  root directory path of libpcre installation [defaults to

                          /usr/local or /usr if not found in /usr/local]

  --without-libpcre   to disable libpcre usage completely],

                     [if test "$withval" != no ; then

                          LIBPCRE_HOME="$withval"

                          AC_MSG_RESULT([yes: libraries ${LIBPCRE_HOME}/lib  includes ${LIBPCRE_HOME}/include])

                      else

                          AC_MSG_RESULT(no)

                      fi],

                     [LIBPCRE_HOME=/usr/local

                      if test ! -f "${LIBPCRE_HOME}/include/pcre.h"

                      then

                         LIBPCRE_HOME=/usr

                      fi

                      AC_MSG_RESULT([yes: libraries ${LIBPCRE_HOME}/lib  includes ${LIBPCRE_HOME}/include])

                     ])

 

#

# Locate libpcre, if wanted

#

         if test -n "${LIBPCRE_HOME}"

         then

             LDFLAGS="$LDFLAGS -L${LIBPCRE_HOME}/lib"

             CPPFLAGS="$CPPFLAGS -I${LIBPCRE_HOME}/include"

             AC_CHECK_LIB(pcre, pcre_compile, $1, $2)

         else

             $2

         fi

    ])