General :: Error - LDREX / STREXEQ Not Supported By ARMV6

I try to compile Android 4.4.2 for an Armv6j processor.

When it comes to the file build_info.cc i get an error:

Code:

target thumb C++: base_base_gyp <= external/chromium_org/base/android/build_info.cc
{standard input}: Assembler messages:
{standard input}:1228: Error: selected processor does not support Thumb mode `ldrex r5,[r4]'
{standard input}:1231: Error: selected processor does not support Thumb mode `strexeq r1,r2,[r4]'

But LDREX and STREXEQ are supported by Armv6.