Move all to deprecated folder.

deprecated/firmware/buildroot/docs/manual/known-issues.txt

@@ -0,0 +1,35 @@
+// -*- mode:doc; -*-
+// vim: set syntax=asciidoc:
+
+== Known issues
+
+* It is not possible to pass extra linker options via +BR2_TARGET_LDFLAGS+
+  if such options contain a +$+ sign. For example, the following is known
+  to break: +BR2_TARGET_LDFLAGS="-Wl,-rpath=\'$ORIGIN/../lib'"+
+
+* The +ltp-testsuite+ package does not build with the default uClibc
+  configuration used by the Buildroot toolchain backend. The LTP
+  testsuite uses several functions that are considered obsolete, such
+  as sigset() and others. uClibc configuration options such as
+  DO_XSI_MATH, UCLIBC_HAS_OBSOLETE_BSD_SIGNAL and
+  UCLIBC_SV4_DEPRECATED are needed if one wants to build the
+  +ltp-testsuite+ package with uClibc. You need to either use a glibc
+  or eglibc based toolchain, or enable the appropriate options in the
+  uClibc configuration.
+
+* The +xfsprogs+ package does not build with the default uClibc
+  configuration used by the Buildroot toolchain backend. You need to
+  either use a glibc or eglibc based toolchain, or enable the
+  appropriate options in the uClibc configuration.
+
+* The +mrouted+ package does not build with the default uClibc
+  configuration used by the Buildroot toolchain backend. You need to
+  either use a glibc or eglibc based toolchain, or enable the
+  appropriate options in the uClibc configuration.
+
+* The +libffi+ package is not supported on the SuperH 2 and ARC
+  architectures.
+
+* The +prboom+ package triggers a compiler failure with the SuperH 4
+  compiler from Sourcery CodeBench, version 2012.09.
+