rt-tests: add patch to support passing CFLAGS/LDFLAGS

Enable passing OE and Distro-specific CFLAGS/LDFLAGS to the Makefile.

(From OE-Core rev: fb89e4585644db0958a633a637fc70f0459af26a)

Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-rt/rt-tests/rt-tests-0.83/makefile-support-user-cflags-ldflags.patch

@@ -0,0 +1,89 @@
+From: Darren Hart <dvhart@linux.intel.com>
+Subject: [PATCH rt-tests RFC 4/6] Makefile: Support user supplied CFLAGS and LDFLAGS
+Date: Thu, 22 Mar 2012 02:14:04 +0100
+
+Accept user supplied CFLAGS and LDFLAGS, overwriting the
+Makefile supplied versions. This can cause the build to
+fail if the user does not provide at least what the Makefile
+defines, but so be it.
+
+Upstream-Status: Submitted [linux-rt-users@vger.kernel.org]
+
+Signed-off-by: Darren Hart <dvhart@linux.intel.com>
+CC: Clark Williams <williams@redhat.com>
+CC: John Kacur <jkacur@redhat.com>
+CC: Denys Dmytriyenko <denis@denix.org>
+Signed-off-by: John Kacur <jkacur@redhat.com>
+---
+ Makefile |   25 +++++++++++++------------
+ 1 files changed, 13 insertions(+), 12 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 4038dcc..e1edf6c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -20,7 +20,8 @@ ifneq ($(filter x86_64 i386 ia64 mips powerpc,$(machinetype)),)
+ NUMA 	:= 1
+ endif
+ 
+-CFLAGS = -D_GNU_SOURCE -Wall -Wno-nonnull -Isrc/include
++CFLAGS ?= -D_GNU_SOURCE -Wall -Wno-nonnull -Isrc/include
++LDFLAGS ?=
+ 
+ PYLIB  := $(shell python -c 'import distutils.sysconfig;  print distutils.sysconfig.get_python_lib()')
+ 
+@@ -61,41 +62,41 @@ all: $(TARGETS) hwlatdetect
+ -include $(sources:.c=.d)
+ 
+ cyclictest: cyclictest.o rt-utils.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(NUMA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(NUMA_LIBS)
+ 
+ signaltest: signaltest.o rt-utils.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+ 
+ pi_stress: pi_stress.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+ 
+ hwlatdetect:  src/hwlatdetect/hwlatdetect.py
+ 	chmod +x src/hwlatdetect/hwlatdetect.py
+ 	ln -s src/hwlatdetect/hwlatdetect.py hwlatdetect
+ 
+ rt-migrate-test: rt-migrate-test.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+ 
+ ptsematest: ptsematest.o rt-utils.o rt-get_cpu.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
+ 
+ sigwaittest: sigwaittest.o rt-utils.o rt-get_cpu.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
+ 
+ svsematest: svsematest.o rt-utils.o rt-get_cpu.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
+ 
+ pmqtest: pmqtest.o rt-utils.o rt-get_cpu.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
+ 
+ sendme: sendme.o rt-utils.o rt-get_cpu.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS) $(EXTRA_LIBS)
+ 
+ pip_stress: pip_stress.o error.o rt-utils.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+ 
+ hackbench: hackbench.o
+-	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
++	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
+ 
+ CLEANUP  = $(TARGETS) *.o .depend *.*~ *.orig *.rej rt-tests.spec *.d
+ CLEANUP += $(if $(wildcard .git), ChangeLog)
+-- 
+1.7.7.6

meta/recipes-rt/rt-tests/rt-tests_0.83.bb

@@ -11,13 +11,15 @@ SRCREV = "5f1e84f8b015df3ff950056494134eca3f640d70"
 
 # git -> 0.83 needs a PE bump
 PE = "1"
-PR = "r1"
+PR = "r2"
 
-SRC_URI = "git://github.com/clrkwllms/rt-tests.git"
+SRC_URI = "git://github.com/clrkwllms/rt-tests.git \
+           file://makefile-support-user-cflags-ldflags.patch"
 
 S = "${WORKDIR}/git"
 
-CFLAGS += "-I${S}/src/include -D_GNU_SOURCE -Wall -Wno-nonnulli ${LDFLAGS}"
+# need to append rt-tests' default CFLAGS to ours
+CFLAGS += "-I${S}/src/include -D_GNU_SOURCE -Wall -Wno-nonnulli"
 
 # calling 'uname -m' is broken on crossbuilds
 EXTRA_OEMAKE = "NUMA=0"