buildroot/boot/syslinux/Config.in

config BR2_TARGET_SYSLINUX
	bool "syslinux"
	depends on BR2_i386 || BR2_x86_64
	help
	  The syslinux bootloader for x86 systems.
	  This includes: syslinux, pxelinux, extlinux.

	  http://syslinux.org

if BR2_TARGET_SYSLINUX

config BR2_TARGET_SYSLINUX_ISOLINUX
	bool "Install isolinux"
	default y

config BR2_TARGET_SYSLINUX_PXELINUX
	bool "Install pxelinux"
	default y

endif