On Thu, 2008-09-04 at 15:49 -0500, Serge E. Hallyn wrote:
> Quoting Matt Helsley ([EMAIL PROTECTED]):
> > Now that we have proper dependencies on check_for_unshare we take explicit 
> > tests
> > for unshare out of the top-level make file and distribute to each subdir
> > Makefile as ifeq...endif sections which control which targets to build. 
> > While it doesn't avoid descending into subdirs it's easier to read and 
> > check the
> > make code when most of the build rules don't have shell flow control.
> > 
> > Even better if we could change the contents of SUBDIRS based on the results 
> > of
> > running check_for_unshare.
> > 
> > Also note the use of := and not =. info Make is our friend.
> > 
> > Signed-off-by: Matt Helsley <[EMAIL PROTECTED]>
> 
> I'll take your word for this one.  Though wouldn't it be better to just
> set SUBDIRS := \n in the containers/Makefile if not HAS_UNSHARE?  Keeps
> the rest of the Makefiles simpler and particularly simplifies Makefiles
> for any future directories...
> 
> But I'll assume this works.
> 
> Acked-by: Serge Hallyn <[EMAIL PROTECTED]>

Merged-By: Subrata Modak <[EMAIL PROTECTED]>

> > Cc: Veerendra Chandrappa <[EMAIL PROTECTED]>
> > Cc: Sudhir Kumar15 <[EMAIL PROTECTED]>
> > Cc: Subrata Modak <[EMAIL PROTECTED]>
> > Cc: Serge E. Hallyn <[EMAIL PROTECTED]>
> > ---
> >  testcases/kernel/containers/Makefile          |   10 +++-------
> >  testcases/kernel/containers/libclone/Makefile |   10 ++++++++--
> >  testcases/kernel/containers/pidns/Makefile    |    8 +++++++-
> >  testcases/kernel/containers/sysvipc/Makefile  |    5 +++++
> >  testcases/kernel/containers/utsname/Makefile  |    5 +++++
> >  5 files changed, 28 insertions(+), 10 deletions(-)
> > 
> > Index: ltp-intermediate-20080820/testcases/kernel/containers/Makefile
> > ===================================================================
> > --- ltp-intermediate-20080820.orig/testcases/kernel/containers/Makefile
> > +++ ltp-intermediate-20080820/testcases/kernel/containers/Makefile
> > @@ -21,9 +21,7 @@
> >  SUBDIRS = libclone utsname sysvipc pidns
> > 
> >  all: check_for_unshare
> > -   @set -e; if './check_for_unshare' > /dev/null 2>&1; then \
> > -           for i in $(SUBDIRS); do $(MAKE) -C $$i $@; done \
> > -   else echo "system does not support unshare"; true; fi
> > +   @set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i $@; done
> > 
> >  noltp noltp_check: check_for_unshare
> >     @set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i $@; done
> > @@ -34,10 +32,8 @@ check_for_unshare: check_for_unshare.c
> >  install: check_for_unshare
> >     @set -e; ln -f check_for_unshare ../../bin/check_for_unshare; \
> >     ln -f container_test.sh ../../bin/container_test.sh; \
> > -   if './check_for_unshare' > /dev/null 2>&1; then \
> > -           for i in $(SUBDIRS); do $(MAKE) -C $$i $@ ; done; \
> > -           chmod ugo+x container_test.sh; \
> > -   else echo "system does not support unshare"; true; fi
> > +   for i in $(SUBDIRS); do $(MAKE) -C $$i $@ ; done; \
> > +   chmod ugo+x container_test.sh
> > 
> >  clean:
> >     @set -e; for i in $(SUBDIRS); do $(MAKE) -C $$i $@ ; done
> > Index: 
> > ltp-intermediate-20080820/testcases/kernel/containers/libclone/Makefile
> > ===================================================================
> > --- 
> > ltp-intermediate-20080820.orig/testcases/kernel/containers/libclone/Makefile
> > +++ ltp-intermediate-20080820/testcases/kernel/containers/libclone/Makefile
> > @@ -18,13 +18,19 @@
> >  ##                                                                         
> >    ##
> >  
> > ################################################################################
> > 
> > -TARGET=libclone.a
> >  SRCS=$(wildcard *.c)
> >  OBJS=$(patsubst %.c,%.o,$(SRCS))
> > 
> > +HAS_UNSHARE ?= $(shell ../check_for_unshare && echo y)
> > +ifeq ($(HAS_UNSHARE),y)
> > +TARGET := libclone.a
> > +else
> > +TARGET :=
> > +endif
> > +
> >  all noltp : $(TARGET)
> > 
> > -$(TARGET): $(OBJS)
> > +libclone.a: $(OBJS)
> >     $(AR) -cr $@ $^
> > 
> >  clean:
> > Index: ltp-intermediate-20080820/testcases/kernel/containers/pidns/Makefile
> > ===================================================================
> > --- 
> > ltp-intermediate-20080820.orig/testcases/kernel/containers/pidns/Makefile
> > +++ ltp-intermediate-20080820/testcases/kernel/containers/pidns/Makefile
> > @@ -23,10 +23,16 @@ CPPFLAGS += -I../../../../include -I../l
> >  LDLIBS += -L../../../../lib -L../libclone ../libclone/libclone.a -lltp
> > 
> >  SRCS    = $(wildcard *.c)
> > -NOLTPSRCS = pidns01.c pidns02.c pidns03.c
> >  TARGETS = $(patsubst %.c,%,$(SRCS))
> > +
> > +NOLTPSRCS = pidns01.c pidns02.c pidns03.c
> >  NOLTP_TARGETS = $(patsubst %.c,%_noltp,$(NOLTPSRCS))
> > 
> > +HAS_UNSHARE ?= $(shell ../check_for_unshare && echo y)
> > +ifneq ($(HAS_UNSHARE),y)
> > +TARGETS :=
> > +endif
> > +
> >  %_noltp : %.c
> >     $(CC) -g -DNO_LTP -o $@ $< ../libclone/libclone.a
> > 
> > Index: 
> > ltp-intermediate-20080820/testcases/kernel/containers/sysvipc/Makefile
> > ===================================================================
> > --- 
> > ltp-intermediate-20080820.orig/testcases/kernel/containers/sysvipc/Makefile
> > +++ ltp-intermediate-20080820/testcases/kernel/containers/sysvipc/Makefile
> > @@ -25,6 +25,11 @@ SRCS    = $(wildcard *.c)
> >  TARGETS = $(patsubst %.c,%,$(SRCS))
> >  NOLTP_TARGETS = $(patsubst %.c,%_noltp,$(SRCS))
> > 
> > +HAS_UNSHARE ?= $(shell ../check_for_unshare && echo y)
> > +ifneq ($(HAS_UNSHARE),y)
> > +TARGETS :=
> > +endif
> > +
> >  %_noltp : %.c
> >     $(CC) -g -DNO_LTP -o $@ $< ../libclone/libclone.a
> > 
> > Index: 
> > ltp-intermediate-20080820/testcases/kernel/containers/utsname/Makefile
> > ===================================================================
> > --- 
> > ltp-intermediate-20080820.orig/testcases/kernel/containers/utsname/Makefile
> > +++ ltp-intermediate-20080820/testcases/kernel/containers/utsname/Makefile
> > @@ -27,6 +27,11 @@ NOLTPSRCS = utstest.c
> >  TARGETS = $(patsubst %.c,%,$(SRCS))
> >  NOLTP_TARGETS = $(patsubst %.c,%_noltp,$(NOLTPSRCS))
> > 
> > +HAS_UNSHARE ?= $(shell ../check_for_unshare && echo y)
> > +ifneq ($(HAS_UNSHARE),y)
> > +TARGETS :=
> > +endif
> > +
> >  %_noltp : %.c
> >     $(CC) -g -DNO_LTP -o $@ $< ../libclone/libclone.a
> > 
> > 
> > -- 


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