Some build fixes for FreeBSD.

* Drop endian.h; no longer needed as FreeBSD provides its own
   (and this conflicts with some other things later in the build.)

 * Needs libgnuregex; enable and adjust paths.

Doesn't fully work yet. The fixes in the next commit for fat_shell
plus some other build system tweaks are still needed.

headers/build/host/freebsd/endian.h

@@ -1,16 +0,0 @@
-#ifndef _HAIKU_BUILD_COMPATIBILITY_FREEBSD_ENDIAN
-#define _HAIKU_BUILD_COMPATIBILITY_FREEBSD_ENDIAN
-
-
-// There's no <endian.h> in FreeBSD, but <sys/endian.h>. And the macro naming
-// differs.
-
-#include <sys/endian.h>
-
-
-#define	__LITTLE_ENDIAN	_LITTLE_ENDIAN
-#define	__BIG_ENDIAN	_BIG_ENDIAN
-#define	__PDP_ENDIAN	_PDP_ENDIAN
-#define	BYTE_ORDER		_BYTE_ORDER
-
-#endif	// _HAIKU_BUILD_COMPATIBILITY_FREEBSD_ENDIAN

src/build/Jamfile

@@ -8,6 +8,6 @@ SubInclude HAIKU_TOP src build libshared ;
 SubInclude HAIKU_TOP src build libsolv ;
 SubInclude HAIKU_TOP src build libuuid ;
 
-if $(HOST_PLATFORM) = darwin {
+if $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = freebsd {
 	SubInclude HAIKU_TOP src build libgnuregex ;
 }

src/build/libgnuregex/Jamfile

@@ -1,5 +1,7 @@
 SubDir HAIKU_TOP src build libgnuregex ;
 
+MakeLocate libgnuregex_build.so : $(HOST_BUILD_COMPATIBILITY_LIB_DIR) ;
+
 BuildPlatformSharedLibrary libgnuregex_build.so :
 	regex.c
 	printchar.c

src/tools/keymap/Jamfile

@@ -6,25 +6,16 @@ SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src bin keymap ] ;
 
 USES_BE_API on <build>keymap = true ;
 
-local regexSources ;
 local regexLib ;
-
-if $(HOST_PLATFORM) = freebsd {
-	# FreeBSD isolates the GNU regex functions into their own library.
-	regexLib = gnuregex ;
-} else if $(HOST_PLATFORM) = darwin {
-	# Darwin does not have them at all, so we use the bundled version.
+if $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = freebsd {
+	UseHeaders [ FDirName $(HAIKU_TOP) src build libgnuregex ] : true ;
 	regexLib = libgnuregex_build.so ;
 }
 
 BuildPlatformMain <build>keymap :
 	main.cpp
 	Keymap.cpp
-	$(regexSources)
 	: libshared_build.a $(HOST_LIBSTDC++) $(HOST_LIBSUPC++) $(regexLib)
 ;
 
 LinkAgainst <build>keymap : $(HOST_LIBBE) ;
-
-SEARCH on [ FGristFiles $(regexSources) ]
-	= [ FDirName $(HAIKU_TOP) src system libroot posix glibc regex ] ;