From f127cd28b5f758a512fcd09e317e720c16bce3b4 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Thu, 6 Jun 1996 04:54:33 +0000
Subject: Thu Jun  6 00:02:15 1996  Roland McGrath 
 <roland@delasyd.gnu.ai.mit.edu>

	* locale/Makefile: Add vpath for %.gperf to programs.

	* Make-dist (+tsrcs): Variable removed.
	(dist): Process $^ here instead of using $(+tsrcs).

	* sysdeps/unix/sysv/linux/Makefile (install-others): Don't set.
	($(includedir)/sys/syscall.h): Target removed.
	(sysdep_headers): Add syscall-list.h.
	($(objpfx)syscall-%.[dh]): New rule to build syscall-list.[dh].
	(generated): Add those.
	* sysdeps/unix/sysv/linux/syscall.h: Include <syscall-list.h>.

	* misc/sys/syscall.h: New file.
	* misc/Makefile (headers): Add sys/syscall.h.

	* sysdeps/unix/sysv/linux/i386/Makefile: Likewise.
---
 sysdeps/unix/sysv/linux/Makefile  | 41 +++++++++++++++++----------------------
 sysdeps/unix/sysv/linux/syscall.h |  8 ++++++++
 2 files changed, 26 insertions(+), 23 deletions(-)

(limited to 'sysdeps')

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index ec5119e..8d351c4 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -18,29 +18,24 @@ ifeq ($(subdir), misc)
 sysdep_routines += mount umount xmknod s_ptrace s_sysctl sysctl llseek \
 setfsgid setfsuid sysinfo uselib s_reboot
 
-sysdep_headers += sys/mount.h sys/sysinfo.h sys/acct.h sys/sysctl.h sys/module.h \
-	sys/io.h sys/klog.h sys/kdaemon.h
-
-install-others += $(includedir)/sys/syscall.h
-
-$(includedir)/sys/syscall.h::
-	@rm -f $(objpfx)syscall.h $(objpfx)syscall.sed
-	@(os=`uname -sr`; \
-	  echo -e '1i\\\n#ifndef _SYS_SYSCALL_H\\'; \
-	  echo -e '#define _SYS_SYSCALL_H\t1\\\n\\'; \
-	  echo -e -n '/* This file is automatically generated as part of '; \
-	  echo -e 'GNU libc-$(version)\\'; \
-	  echo -e "   on a system running $$os.  */\\"; echo; \
-	  echo -e -n 's/#define __NR_\\([A-Za-z0-9_]*\\)[ \t]*__NR_\\(.*\\)/';\
-	  echo -e '#define SYS_\\1 SYS_\\2/p'; \
-	  echo -e -n 's/#define __NR_\\([A-Za-z0-9_]*\\)[ \t]*\\(.*\\)/';\
-	  echo -e '#define SYS_\\1 \\2/p'; \
-	  echo -e '$$i\\\n\\\n#endif\t/* sys/syscall.h */\nd') \
-	    >  $(objpfx)syscall.sed
-	set -- `echo '#include <asm/unistd.h>'|$(CC) -M -E -`; \
-	sed -f $(objpfx)syscall.sed $$2 > $(objpfx)syscall.h
-	$(INSTALL_DATA) $(objpfx)syscall.h $@
-	rm -f $(objpfx)syscall.h $(objpfx)syscall.sed
+sysdep_headers += sys/mount.h sys/sysinfo.h sys/acct.h sys/sysctl.h \
+		  sys/module.h sys/io.h sys/klog.h sys/kdaemon.h \
+		  syscall-list.h
+
+# Generate the list of SYS_* macros for the system calls (__NR_* macros).
+$(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/syscall.h
+	rm -f $(@:.h=.d)
+	echo > $(@:.d=.h).new \
+	     '/* Generated at libc build time from kernel syscall list.  */'
+	SUNPRO_DEPENDENCIES='$(@:.h=.d) $(patsubst $(objpfx)%,$$(objpfx)%,\
+			     $(@:.h=.d))' \
+	$(CC) -E -x c $< -D_LIBC -dM | \
+	sed -n >> $(@:.d=.h).new \
+	      's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p'
+	mv -f $(@:.d=.h).new $(@:.d=.h)
+# Get the generated list of dependencies (probably /usr/include/asm/unistd.h).
+-include $(objpfx)syscall-list.d
+generated += syscall-list.h syscall-list.d
 endif
 
 ifeq ($(subdir), time)
diff --git a/sysdeps/unix/sysv/linux/syscall.h b/sysdeps/unix/sysv/linux/syscall.h
index 62fca57..1fbda4c 100644
--- a/sysdeps/unix/sysv/linux/syscall.h
+++ b/sysdeps/unix/sysv/linux/syscall.h
@@ -24,4 +24,12 @@ Cambridge, MA 02139, USA.  */
    from the kernel sources.  */
 #include <asm/unistd.h>
 
+#ifndef _LIBC
+/* The Linux kernel header file defines macros `__NR_<name>', but some
+   programs expect the traditional form `SYS_<name>'.  So in building libc
+   we scan the kernel's list and produce <syscall-list.h> with macros for
+   all the `SYS_' names.  */
+#include <syscall-list.h>
+#endif
+
 #endif
-- 
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