apr: needs mmu

Uses fork() in apr_proc_fork() which is used by almost all the packages
that use apr (log4cxx, subversion).
apr-util doesn't use fork or apr_proc_fork but it's of no use alone.

[Peter: also hide log4cxx comment if !BR2_USE_MMU]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/apr-util/Config.in

@@ -7,6 +7,7 @@ config BR2_PACKAGE_APR_UTIL
 	select BR2_PACKAGE_ZLIB
 	# apr really needs shared library support
 	depends on !BR2_PREFER_STATIC_LIB
+	depends on BR2_USE_MMU # apr
 	help
 	  The utility library for the apache runtime project
 

package/apr/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_APR
 	bool "apr"
 	# apr really needs shared library support
 	depends on !BR2_PREFER_STATIC_LIB
+	depends on BR2_USE_MMU # fork() in apr_proc_fork()
 	help
 	  The mission of the Apache Portable Runtime (APR) project is to create
 	  and maintain software libraries that provide a predictable and

package/log4cxx/Config.in

@@ -6,6 +6,7 @@ config BR2_PACKAGE_LOG4CXX
 	depends on !BR2_PREFER_STATIC_LIB
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU # apr
 	help
 	  Apache log4cxx is a logging framework for C++ patterned
 	  after Apache log4j.
@@ -15,3 +16,4 @@ config BR2_PACKAGE_LOG4CXX
 comment "log4cxx needs a toolchain w/ C++, threads, dynamic library"
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS || \
 		BR2_PREFER_STATIC_LIB
+	depends on BR2_USE_MMU

package/subversion/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_SUBVERSION
 	select BR2_PACKAGE_APR_UTIL
 	# apr really needs shared library support
 	depends on !BR2_PREFER_STATIC_LIB
+	depends on BR2_USE_MMU # apr
 	select BR2_PACKAGE_NEON
 	select BR2_PACKAGE_NEON_XML
 	help