There is a race due to the execution of make inside the makefile:

| gcc  -pthread -c -Wno-unused-result -DNDEBUG -g  -O3 -Wall -Wstrict-prototypes -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe   -I. -IInclude -I./Include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -fPIC -DPy_BUILD_CORE -o Objects/obmalloc.o Objects/obmalloc.c
| gcc  -pthread -c -Wno-unused-result -DNDEBUG -g  -O3 -Wall -Wstrict-prototypes -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe   -I. -IInclude -I./Include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -fPIC -DPy_BUILD_CORE -o Parser/pgen.o Parser/pgen.c| gcc  -pthread -c -Wno-unused-result -DNDEBUG -g  -O3 -Wall -Wstrict-prototypes -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe   -I. -IInclude -I./Include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -fPIC -DPy_BUILD_CORE -o Objects/obmalloc.o Objects/obmalloc.c
| gcc  -pthread -c -Wno-unused-result -DNDEBUG -g  -O3 -Wall -Wstrict-prototypes -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe   -I. -IInclude -I./Include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -isystem/home/pokybuild/yocto-autobuilder-dev/yocto-slave/nightly-world/build/build/tmp/sysroots/x86_64-linux/usr/include -fPIC -DPy_BUILD_CORE -o Objects/obmalloc.o Objects/obmalloc.c
| Objects/obmalloc.o: file not recognized: File truncated
| collect2: error: ld returned 1 exit status
| make[1]: *** [Parser/pgen] Error 1

The easiest way to avoid this is to list the dependencies explictly.

RP 28/2/2014

Upstream-Status: Pending

Index: Python-3.3.3/Makefile.pre.in
===================================================================
--- Python-3.3.3.orig/Makefile.pre.in	2014-02-27 14:04:38.268339533 +0000
+++ Python-3.3.3/Makefile.pre.in	2014-02-28 10:40:59.166361125 +0000
@@ -676,7 +676,7 @@
 
 $(IO_OBJS): $(IO_H)
 
-$(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS)
+$(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS) $(PGEN)
 		@$(MKDIR_P) Include
 		$(MAKE) $(PGEN)
 		$(HOSTPGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)