Drop CLANGBUILD in addition to CLANGDIR

...see
<http://lists.freedesktop.org/archives/libreoffice/2014-February/059654.html>
"Drop CLANGBUILD in addition to CLANGDIR?"

Change-Id: I8d68aa0f2298240c8e7265cab273c602f5b6881a

compilerplugins/Makefile-clang.mk

@@ -21,7 +21,7 @@ CLANGCXXFLAGS=-O2 -Wall -Wextra -g
 # Clang headers require these.
 CLANGDEFS=-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -fno-rtti
 # All include locations needed.
-CLANGINCLUDES=-isystem $(CLANGDIR)/include -isystem $(CLANGDIR)/tools/clang/include -isystem $(CLANGBUILD)/include -isystem $(CLANGBUILD)/tools/clang/include
+CLANGINCLUDES=-isystem $(CLANGDIR)/include -isystem $(CLANGDIR)/tools/clang/include
 
 # Clang/LLVM libraries are intentionally not linked in, they are usually built as static libraries, which means the resulting
 # plugin would be big (even though the clang binary already includes it all) and it'd be necessary to explicitly specify
@@ -93,7 +93,7 @@ $(CLANGOUTDIR)/plugin.so: $(CLANGOBJS)
 			-Wl$(CLANG_COMMA)-undefined -Wl$(CLANG_COMMA)suppress)
 
 # Clang most probably doesn't maintain binary compatibility, so rebuild when clang changes.
-$(CLANGOUTDIR)/clang-timestamp: $(CLANGBUILD)/bin/clang
+$(CLANGOUTDIR)/clang-timestamp: $(CLANGDIR)/bin/clang
 	$(QUIET)touch $@
 
 # vim: set noet sw=4 ts=4:

config_host.mk.in

@@ -51,7 +51,6 @@ export CC=@CC@
 export CDR_CFLAGS=$(gb_SPACE)@CDR_CFLAGS@
 export CDR_LIBS=$(gb_SPACE)@CDR_LIBS@
 @x_CFLAGS@ export CFLAGS=@CFLAGS@
-export CLANGBUILD=@CLANGBUILD@
 export CLANGDIR=@CLANGDIR@
 export CLUCENE_CFLAGS=$(gb_SPACE)@CLUCENE_CFLAGS@
 export CLUCENE_LIBS=$(gb_SPACE)@CLUCENE_LIBS@

configure.ac

@@ -5656,18 +5656,13 @@ if test "$COM_GCC_IS_CLANG" = "TRUE"; then
         if test -z "$CLANGDIR"; then
             CLANGDIR=/usr
         fi
-        dnl The build directory (different from CLANGDIR if using a Clang out-
-        dnl of-source build):
-        if test -z "$CLANGBUILD"; then
-            CLANGBUILD=/usr
-        fi
         AC_LANG_PUSH([C++])
         save_CPPFLAGS=$CPPFLAGS
         save_CXX=$CXX
         # compiler plugins must be built with "native" bitness of clang
         # because they link against clang libraries
         CXX=`echo $CXX | sed -e s/-m64// -e s/-m32//`
-        CPPFLAGS="$CPPFLAGS -I$CLANGDIR/include -I$CLANGDIR/tools/clang/include -I$CLANGBUILD/include -I$CLANGBUILD/tools/clang/include -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
+        CPPFLAGS="$CPPFLAGS -I$CLANGDIR/include -I$CLANGDIR/tools/clang/include -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
         AC_CHECK_HEADER(clang/AST/RecursiveASTVisitor.h,
             [COMPILER_PLUGINS=TRUE],
             [
@@ -5689,7 +5684,6 @@ else
 fi
 AC_SUBST(COMPILER_PLUGINS)
 AC_SUBST(CLANGDIR)
-AC_SUBST(CLANGBUILD)
 
 # Plugin to help linker.
 # Add something like LD_PLUGIN=/usr/lib64/LLVMgold.so to your autogen.input.