luajit: needs for 32bit archictectures a 32bit host gcc

For 32 bit archictectures the luajit package needs a host compiler
able to generate 32 bit code using the "-m32" option so check if that
option is supported.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: François Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/luajit/Config.in

@@ -5,6 +5,10 @@ config BR2_PACKAGE_LUAJIT
 	# has some complexity wrt 32/64. See luajit.mk for details.
 	depends on BR2_i386 || (BR2_x86_64 && BR2_HOSTARCH='x86_64') || BR2_powerpc || BR2_arm || BR2_armeb \
 		   || ((BR2_mips || BR2_mipsel) && !BR2_MIPS_SOFT_FLOAT)
+	# luajit.mk uses the "-m32" compiler option to build 32bit
+	# binaries, so check if that option is supported. See
+	# luajit.mk for details.
+	select BR2_HOSTARCH_NEEDS_IA32_COMPILER if !BR2_ARCH_IS_64
 	help
 	  LuaJIT implements the full set of language features defined
 	  by Lua 5.1. The virtual machine (VM) is API- and