nptl/headers: Convert the makefile targets into variables.

* Introduce pregen-headers-y which is list of generated headers
  during the build and add this to pregen target in top level makefile.
  Also add nptl_headers, nptl_arch_headers, nptl_linux_headers
  to this if compiling with nptl.

* Replace pthread_pregen var with pregen-headers-y.

* Make nptl_headers, nptl_arch_headers, nptl_linux_headers variables
  instead of sub targets.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Makefile.in

@@ -160,7 +160,8 @@ headers-y += $(target-headers-sysdep)
 
 headers: $(top_builddir)include/bits/uClibc_config.h
 subdirs: $(addprefix $(top_builddir),$(subdirs))
-pregen: $(top_builddir)include/bits/sysnum.h headers subdirs $(pthread_pregen)
+pregen-headers-y := $(top_builddir)include/bits/sysnum.h
+pregen: $(pregen-headers-y) headers subdirs
 	$(Q)$(if $(UCLIBC_HAS_LOCALE),$(MAKE) -C extra/locale locale_headers)
 
 $(top_builddir)include/bits/sysnum.h: $(top_srcdir)extra/scripts/gen_bits_syscall_h.sh

libpthread/nptl/Makefile.in

@@ -270,7 +270,7 @@ headers_clean-y += nptl_headers_clean
 -include $(PTHREAD_DIR)/sysdeps/unix/sysv/linux/Makefile.in
 -include $(PTHREAD_DIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH)/Makefile.arch
 
-pthread_pregen := nptl_headers nptl_arch_headers nptl_linux_headers
+pregen-headers-$(UCLIBC_HAS_THREADS_NATIVE) += $(nptl_headers) $(nptl_arch_headers) $(nptl_linux_headers)
 
 lib-a-$(UCLIBC_HAS_THREADS) += $(top_builddir)lib/libpthread.a
 lib-so-$(UCLIBC_HAS_THREADS) += $(top_builddir)lib/libpthread.so
@@ -326,14 +326,14 @@ $(top_builddir)include/bits/libc-lock.h: | include/bits
 $(top_builddir)include/bits/stdio-lock.h: | include/bits
 	$(do_ln) ../../$(PTDIR)/sysdeps/pthread/bits/$(@F) $(top_builddir)$@
 
-nptl_headers_bootstrap:= $(top_builddir)include/pthread.h \
+nptl_headers_bootstrap := $(top_builddir)include/pthread.h \
 		$(top_builddir)include/semaphore.h \
 		$(top_builddir)include/bits/semaphore.h \
 		$(top_builddir)include/bits/pthreadtypes.h \
 		$(top_builddir)include/bits/libc-lock.h \
 		$(top_builddir)include/bits/stdio-lock.h
 
-nptl_headers: $(PTHREAD_OUT)/pthread-errnos.h
+nptl_headers := $(PTHREAD_OUT)/pthread-errnos.h
 
 nptl_headers_clean:
 	$(do_rm) $(nptl_headers_bootstrap) \

libpthread/nptl/sysdeps/arm/Makefile.arch

@@ -57,9 +57,11 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.c: $(PTHREAD_ARCH_DIR)/tcb-offsets.sym
 $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 	$(compile.c)
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
+$(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	$(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+
 nptl_arch_headers_clean:
 	$(RM) $(PTHREAD_ARCH_OUT)/tcb-offsets.c		\
 	      $(PTHREAD_ARCH_OUT)/tcb-offsets.s		\

libpthread/nptl/sysdeps/i386/Makefile.arch

@@ -44,7 +44,7 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 $(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	@sed -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
 nptl_arch_headers_clean:
 	$(do_rm) $(addprefix $(PTHREAD_ARCH_OUT)/tcb-offsets., c s h)

libpthread/nptl/sysdeps/mips/Makefile.arch

@@ -53,9 +53,11 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.c: $(PTHREAD_ARCH_DIR)/tcb-offsets.sym
 $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 	$(compile.c)
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
+$(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	$(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+
 nptl_arch_headers_clean:
 	$(RM) $(PTHREAD_ARCH_OUT)/tcb-offsets.c		\
 	      $(PTHREAD_ARCH_OUT)/tcb-offsets.s		\

libpthread/nptl/sysdeps/sh/Makefile.arch

@@ -47,7 +47,7 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 $(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	$(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
 nptl_arch_headers_clean:
 	$(do_rm) $(addprefix $(PTHREAD_ARCH_OUT)/tcb-offsets., c s h)

libpthread/nptl/sysdeps/sparc/Makefile.arch

@@ -44,7 +44,7 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 $(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	@sed -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
 nptl_arch_headers_clean:
 	$(do_rm) $(addprefix $(PTHREAD_ARCH_OUT)/tcb-offsets., c s h)

libpthread/nptl/sysdeps/unix/sysv/linux/Makefile.in

@@ -220,7 +220,7 @@ $(PTHREAD_LINUX_OUT)/structsem.h: $(PTHREAD_LINUX_OUT)/gen_lstructsem.s
 $(PTHREAD_LINUX_OUT)/pthread-pi-defines.h: $(PTHREAD_LINUX_OUT)/gen_lpthread-pi-defines.s
 	$(do_sed) -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
 
-nptl_linux_headers: $(PTHREAD_LINUX_OUT)/lowlevelbarrier.h \
+nptl_linux_headers := $(PTHREAD_LINUX_OUT)/lowlevelbarrier.h \
 					$(PTHREAD_LINUX_OUT)/lowlevelcond.h \
 					$(PTHREAD_LINUX_OUT)/lowlevelrwlock.h \
 					$(PTHREAD_LINUX_OUT)/lowlevelrobustlock.h \

libpthread/nptl/sysdeps/x86_64/Makefile.arch

@@ -44,7 +44,7 @@ $(PTHREAD_ARCH_OUT)/tcb-offsets.s: $(PTHREAD_ARCH_OUT)/tcb-offsets.c
 $(PTHREAD_ARCH_OUT)/tcb-offsets.h: $(PTHREAD_ARCH_OUT)/tcb-offsets.s
 	@sed -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$\/#define \1 \2/p" $< > $@
 
-nptl_arch_headers: $(PTHREAD_ARCH_OUT)/tcb-offsets.h
+nptl_arch_headers := $(PTHREAD_ARCH_OUT)/tcb-offsets.h
 
 nptl_arch_headers_clean:
 	$(do_rm) $(addprefix $(PTHREAD_ARCH_OUT)/tcb-offsets., c s h)