c-icap: needs MMU support

Fixes:

  http://autobuild.buildroot.org/results/8c3/8c3e397eeecb2a6a39fbae1d8665bff92ef3e3bb/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/c-icap/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_C_ICAP
 	bool "c-icap"
 	depends on !BR2_PREFER_STATIC_LIB
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU # fork()
 	help
 	  c-icap is an implementation of an ICAP server. It can be
 	  used with HTTP proxies that support the ICAP protocol to
@@ -13,4 +14,5 @@ config BR2_PACKAGE_C_ICAP
 	  http://c-icap.sourceforge.net/
 
 comment "c-icap needs a toolchain w/ threads and dynamic library"
+	depends on BR2_USE_MMU
 	depends on BR2_PREFER_STATIC_LIB  || !BR2_TOOLCHAIN_HAS_THREADS