Wolfgang Grandegger wrote: > Jan Kiszka wrote: > >> Wolfgang Grandegger wrote: >> >>> Jan Kiszka wrote: >>> >>>> Hi, >>>> >>>> the new Xenomai example repository has been created. I don't want to >>>> >>>> repeat here what is explained already on the related wiki page, please >>>> >>>> have a look at >>>> >>>> http://www.xenomai.org/index.php/Examples >>>> >>>> Instead, let me sketch what could be done next: >>>> >>>> o Port existing examples, snippets, demos from ksrc/skins/* over, make >>>> >>>> them compilable and runnable if required. >>>> >>>> o Identify what kind of examples are lacking. You, the user, is needed >>>> >>>> here. What do *you* think is missing, what would be helpful to show? >>>> >>>> o Check what is needed to compile kernel-based examples over PPC 2.4. >>>> >>>> Philippe indicated that some switches are likely missing (x86 is fine >>>> >>>> already, other archs are 2.6-only). >>>> >>> Some time ago I sent a patch for RTnet using the "kernel CFLAGS >>> >>> capturing" trick to get proper switches for 2.4: >>> >>> http://sourceforge.net/mailarchive/forum.php?thread_id=9493711&forum_id=24610 >>> >>> >>> We could do the same trick here. >>> >> Yeah, I had a look at this before. The point is that I would prefer to >> >> keep things _simple_ and self-contained. This capturing requires some >> >> helper Makefile and complex call nestings that likely only people with >> >> advanced make and shell skills can understand and adopt to their projects. >> >> But maybe things are that complicated already, and this is just >> >> different complexity. How do you compile simple out-of-tree modules >> >> against 2.4 PPC kernels? Are there any standard flags? Or is it >> >> different for each board or each compiler version or whatever? >> > I just cut and paste the flags from a kernel module make. For PPC, there > are plenty of flags, not board but some are processor depended, but I'm > unable to tell which one are really required. For this reason I like the > module capturing trick. > What about this patch? I /seems/ to work (yeah, only tested on x86...), merging the whole capturing stuff into the same Makefile. Please give it hell on PPC.
Index: rtdm/driver-api/Makefile
===================================================================
--- rtdm/driver-api/Makefile (Revision 1916)
+++ rtdm/driver-api/Makefile (Arbeitskopie)
@@ -47,23 +47,23 @@ ifneq ($(MODULES),)
OBJS := ${patsubst %, %.o, $(MODULES)}
CLEANMOD := ${patsubst %, .%*, $(MODULES)}
+PWD := $(shell if [ "$$PWD" != "" ]; then echo $$PWD; else pwd; fi)
-# Kernel 2.6
+### Kernel 2.6
ifeq ($(findstring 2.6,$(KSRC)),2.6)
obj-m := $(OBJS)
EXTRA_CFLAGS := -I$(KSRC)/include/xenomai -I$(KSRC)/include/xenomai/posix
$(ADD_CFLAGS)
-PWD := $(shell pwd)
all::
$(MAKE) -C $(KSRC) SUBDIRS=$(PWD) modules
-# Kernel 2.4
+### Kernel 2.4
else
+ARCH ?= $(shell uname -i)
INCLUDE := -I$(KSRC)/include -I$(KSRC)/include/xenomai
-I$(KSRC)/include/xenomai/compat -I$(KSRC)/include/xenomai/posix
-CFLAGS += -O2 -Wall -Wstrict-prototypes -Wno-trigraphs -DMODULE -D__KERNEL__
-DLINUX \
- -fno-strict-aliasing -fno-common $(INCLUDE) $(ADD_CFLAGS)
+CFLAGS += $(shell $(MAKE) -s -C $(KSRC) CC=$(CC) ARCH=$(ARCH) SUBDIRS=$(PWD)
modules) $(INCLUDE) $(ADD_CFLAGS)
all:: $(OBJS)
@@ -74,3 +74,7 @@ clean::
$(RM) -R .tmp*
endif
+
+## Target for capturing 2.4 module CFLAGS
+modules:
+ @echo "$(CFLAGS)"
Jan
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
