[PATCH rcu 4/5] tools/nolibc: make the default target build the headers

["Paul E. McKenney" <paulmck@kernel.org>]

From: Willy Tarreau <w@1wt.eu>

The help in "make -C tools" enumerates nolibc as a valid target so we
must at least make it do something. Let's make it do the equivalent
of "make headers" in that it will prepare a sysroot with the arch's
headers, but will not install the kernel's headers. This is the
minimum some tools will need when built with a full-blown toolchain
anyway.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 tools/Makefile                | 3 +++
 tools/include/nolibc/Makefile | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/Makefile b/tools/Makefile
index c074e42fd92f5..e497875fc7e3f 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -78,6 +78,9 @@ bpf/%: FORCE
 libapi: FORCE
 	$(call descend,lib/api)
 
+nolibc: FORCE
+	$(call descend,include/nolibc)
+
 nolibc_%: FORCE
 	$(call descend,include/nolibc,$(patsubst nolibc_%,%,$@))
 
diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
index e8bac6ef36538..9768819abd55d 100644
--- a/tools/include/nolibc/Makefile
+++ b/tools/include/nolibc/Makefile
@@ -29,7 +29,7 @@ all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \
              sys.h time.h types.h unistd.h
 
 # install all headers needed to support a bare-metal compiler
-all:
+all: headers
 
 # Note: when ARCH is "x86" we concatenate both x86_64 and i386
 headers:
-- 
2.31.1.189.g2e36527f23