[LTP] [PATCH V2 04/32] build: Add option to select libc implementation

[Khem Raj]

There are more than glibc for C library implementation available on
linux now a days, uclibc cloaked like glibc but musl e.g. is very
different and does not implement all GNU extentions

Disable tests specifically not building _yet_ on musl based systems

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 Makefile                                    | 5 +++++
 testcases/kernel/Makefile                   | 5 ++++-
 testcases/kernel/sched/Makefile             | 4 +++-
 testcases/kernel/syscalls/Makefile          | 5 +++++
 testcases/network/nfsv4/acl/Makefile        | 4 ++++
 testcases/network/rpc/basic_tests/Makefile  | 5 +++++
 testcases/realtime/func/pi-tests/Makefile   | 4 ++++
 testcases/realtime/stress/pi-tests/Makefile | 5 +++++
 8 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 297f8e7..906b280 100644
--- a/Makefile
+++ b/Makefile
@@ -49,6 +49,11 @@ SKIP_IDCHECK		?= 0
 UCLINUX			?= 0
 export UCLINUX
 
+# System C library implementation (glibc,uclibc,musl etc.)
+# default to glibc if not set
+LIBC			?= glibc
+export LIBC
+
 # CLEAN_TARGETS:	Targets which exist solely in clean.
 # COMMON_TARGETS:	Targets which exist in all, clean, and install.
 # INSTALL_TARGETS:	Targets which exist in clean and install (contains
diff --git a/testcases/kernel/Makefile b/testcases/kernel/Makefile
index 50a12fa..4f1987f 100644
--- a/testcases/kernel/Makefile
+++ b/testcases/kernel/Makefile
@@ -47,13 +47,16 @@ SUBDIRS			+= connectors \
 			   logging \
 			   mem \
 			   numa \
-			   pty \
 			   sched \
 			   security \
 			   timers \
 			   tracing \
 			   module \
 
+ifneq ($(LIBC),musl)
+SUBDIRS			+= pty
+endif
+
 ifeq ($(WITH_POWER_MANAGEMENT_TESTSUITE),yes)
 SUBDIRS			+= power_management
 endif
diff --git a/testcases/kernel/sched/Makefile b/testcases/kernel/sched/Makefile
index 6245ed0..aa4eb7f 100644
--- a/testcases/kernel/sched/Makefile
+++ b/testcases/kernel/sched/Makefile
@@ -23,5 +23,7 @@
 top_srcdir		?= ../../..
 
 include $(top_srcdir)/include/mk/env_pre.mk
-
+ifeq ($(LIBC),musl)
+	FILTER_OUT_DIRS += process_stress
+endif
 include $(top_srcdir)/include/mk/generic_trunk_target.mk
diff --git a/testcases/kernel/syscalls/Makefile b/testcases/kernel/syscalls/Makefile
index 8acb395..b749126 100644
--- a/testcases/kernel/syscalls/Makefile
+++ b/testcases/kernel/syscalls/Makefile
@@ -28,5 +28,10 @@ ifeq ($(UCLINUX),1)
 FILTER_OUT_DIRS	+= capget capset chmod chown clone fork getcontext llseek \
 		   mincore mprotect nftw profil remap_file_pages sbrk
 endif
+ifeq ($(LIBC),musl)
+FILTER_OUT_DIRS	+= confstr fmtmsg getcontext ioctl mallopt profil \
+		   rt_sigsuspend setdomainname sethostname sigsuspend \
+		   ustat
+endif
 
 include $(top_srcdir)/include/mk/generic_trunk_target.mk
diff --git a/testcases/network/nfsv4/acl/Makefile b/testcases/network/nfsv4/acl/Makefile
index 8bc78c2..c36cf50 100644
--- a/testcases/network/nfsv4/acl/Makefile
+++ b/testcases/network/nfsv4/acl/Makefile
@@ -26,4 +26,8 @@ include $(top_srcdir)/include/mk/env_pre.mk
 
 LDLIBS			+= $(ACL_LIBS)
 
+ifeq ($(LIBC),musl)
+FILTER_OUT_MAKE_TARGETS	:= acl1
+endif
+
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/network/rpc/basic_tests/Makefile b/testcases/network/rpc/basic_tests/Makefile
index 3160813..9bdf5d0 100644
--- a/testcases/network/rpc/basic_tests/Makefile
+++ b/testcases/network/rpc/basic_tests/Makefile
@@ -23,4 +23,9 @@
 top_srcdir		?= ../../../..
 
 include $(top_srcdir)/include/mk/env_pre.mk
+
+ifeq ($(LIBC),musl)
+FILTER_OUT_DIRS += rpc01
+endif
+
 include $(top_srcdir)/include/mk/generic_trunk_target.mk
diff --git a/testcases/realtime/func/pi-tests/Makefile b/testcases/realtime/func/pi-tests/Makefile
index 7a7a57a..5808866 100644
--- a/testcases/realtime/func/pi-tests/Makefile
+++ b/testcases/realtime/func/pi-tests/Makefile
@@ -27,5 +27,9 @@ include $(top_srcdir)/include/mk/env_pre.mk
 include $(abs_srcdir)/../../config.mk
 
 MAKE_TARGETS		:= testpi-0 testpi-1 testpi-2 testpi-4 testpi-5 testpi-6 testpi-7 sbrk_mutex
+ifeq ($(LIBC),musl)
+FILTER_OUT_MAKE_TARGETS	:= testpi-5 testpi-6 sbrk_mutex
+endif
+
 
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/realtime/stress/pi-tests/Makefile b/testcases/realtime/stress/pi-tests/Makefile
index 5edc3b4..aa5987a 100644
--- a/testcases/realtime/stress/pi-tests/Makefile
+++ b/testcases/realtime/stress/pi-tests/Makefile
@@ -24,4 +24,9 @@ top_srcdir		?= ../../../..
 
 include $(top_srcdir)/include/mk/env_pre.mk
 include $(abs_srcdir)/../../config.mk
+
+ifeq ($(LIBC),musl)
+FILTER_OUT_MAKE_TARGETS	:= testpi-3
+endif
+
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
-- 
2.7.0