Configure included hunspell with autotools

The included hunspell should not be used on Linux or OS X, but (depending on
local configuration) it might be needed for crosscompiling a mingw target
from Linux. Now the user can choose whether to use the included hunspell or not.
cmake does already support that.

Now the only other dependency you need to cross-compile for mingw on debian
or ubuntu is qt.

3rdparty/Makefile.am

@@ -6,6 +6,10 @@ if USE_INCLUDED_BOOST
 BOOST = boost
 endif
 
+if USE_INCLUDED_HUNSPELL
+HUNSPELL = hunspell
+endif
+
 if USE_INCLUDED_ICONV
 ICONV = libiconv
 endif
@@ -14,4 +18,4 @@ if USE_INCLUDED_ZLIB
 ZLIB = zlib
 endif
 
-SUBDIRS = $(BOOST) $(ICONV) $(ZLIB)
+SUBDIRS = $(BOOST) $(HUNSPELL) $(ICONV) $(ZLIB)

3rdparty/hunspell/Makefile.am

@@ -1,8 +1,5 @@
 include $(top_srcdir)/config/common.am
 
-# This is prepared for compilation, but currently only used for packaging,
-# because configure support for compilation is still missing.
-
 noinst_LIBRARIES = liblyxhunspell.a
 
 EXTRA_DIST = \
@@ -20,7 +17,10 @@ EXTRA_DIST = \
 	1.3.3/src/hunspell/license.hunspell \
 	1.3.3/src/hunspell/license.myspell \
 	1.3.3/src/hunspell/makefile.mk \
-	1.3.3/src/hunspell/README
+	1.3.3/src/hunspell/README \
+	1.3.3/src/hunspell/utf_info.cxx
+
+AM_CPPFLAGS += -DHUNSPELL_STATIC
 
 liblyxhunspell_a_SOURCES = \
 	1.3.3/src/hunspell/affentry.cxx \
@@ -51,7 +51,6 @@ liblyxhunspell_a_SOURCES = \
 	1.3.3/src/hunspell/replist.hxx \
 	1.3.3/src/hunspell/suggestmgr.cxx \
 	1.3.3/src/hunspell/suggestmgr.hxx \
-	1.3.3/src/hunspell/utf_info.cxx \
 	1.3.3/src/hunspell/w_char.hxx \
 	1.3.3/src/parsers/firstparser.cxx \
 	1.3.3/src/parsers/firstparser.hxx \

config/spell.m4

@@ -68,16 +68,43 @@ AC_DEFUN([CHECK_WITH_HUNSPELL],
     fi
     ])
 
+dnl Usage: LYX_USE_INCLUDED_HUNSPELL : select if the included hunspell should
+dnl        be used.
+AC_DEFUN([LYX_USE_INCLUDED_HUNSPELL],[
+	AC_MSG_CHECKING([whether to use included hunspell library])
+	AC_ARG_WITH(included-hunspell,
+		[AC_HELP_STRING([--without-included-hunspell], [do not use the hunspell lib supplied with LyX, try to find one in the system directories - compilation will abort if nothing suitable is found])],
+		[lyx_cv_with_included_hunspell=$withval],
+		[lyx_cv_with_included_hunspell=no])
+	AM_CONDITIONAL(USE_INCLUDED_HUNSPELL, test x$lyx_cv_with_included_hunspell = xyes)
+	AC_MSG_RESULT([$lyx_cv_with_included_hunspell])
+	if test x$lyx_cv_with_included_hunspell = xyes ; then
+		HUNSPELL_CFLAGS='-I$(top_srcdir)/3rdparty/hunspell/1.3.3/src'
+		HUNSPELL_LIBS='$(top_builddir)/3rdparty/hunspell/liblyxhunspell.a'
+		AC_SUBST(HUNSPELL_CFLAGS)
+		AC_SUBST(HUNSPELL_LIBS)
+	fi
+	])
+
 
 ### Check if we want spell libraries, prefer new aspell or hunspell
 AC_DEFUN([LYX_CHECK_SPELL_ENGINES],
 [
-	CHECK_WITH_ASPELL
+	LYX_USE_INCLUDED_HUNSPELL
+	if test x$lyx_cv_with_included_hunspell = xyes ; then
+dnl the user wanted to use the included hunspell, so do not check for the other spell checkers
+		lyx_use_aspell=false
+		lyx_use_enchant=false
+		lyx_use_hunspell=true
+		lyx_flags="$lyx_flags use-hunspell"
+	else
+		CHECK_WITH_ASPELL
+		CHECK_WITH_ENCHANT
+		CHECK_WITH_HUNSPELL
+	fi
+
 	AM_CONDITIONAL(USE_ASPELL, $lyx_use_aspell)
-
-	CHECK_WITH_ENCHANT
 	AM_CONDITIONAL(USE_ENCHANT, $lyx_use_enchant)
-
-	CHECK_WITH_HUNSPELL
 	AM_CONDITIONAL(USE_HUNSPELL, $lyx_use_hunspell)
 	])
+