From cedd6e358dee8827ce68ec2074001d182751950d Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sun, 15 Jul 2001 14:37:50 +0000
Subject: (unlocked-io.h): New rule. ($(srcdir)/m4/jm-glibc-io.m4): New rule.

---
 Makefile.cfg | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'Makefile.cfg')

diff --git a/Makefile.cfg b/Makefile.cfg
index 9400a3502..4a002d544 100644
--- a/Makefile.cfg
+++ b/Makefile.cfg
@@ -1,3 +1,4 @@
+# -*- makefile -*-
 ## Customize Makefile.maint.
 
 move_if_change = move-if-change
@@ -19,3 +20,45 @@ wget_files = \
   $(srcdir)/config.sub \
   $(srcdir)/doc/texinfo.tex \
   $(srcdir)/src/ansi2knr.c
+
+###############################################
+
+io_functions = \
+  clearerr feof ferror fflush fgets fputc fputs \
+  fread fwrite getc getchar putc putchar
+unlocked_io_functions = $(patsubst %,%_unlocked,$(io_functions))
+
+comma_separated = $(shell echo $(unlocked_io_functions)|tr -s ' ' ,)
+base_functions = $(patsubst %_unlocked,%,$(unlocked_io_functions))
+
+# This temp file may not be e.g., $@t, since that may be in a read-only
+# directory.  Instead, use a file in the current directory.
+t_io = $(notdir $@)t
+
+# This rule requires GNU make.
+$(srcdir)/m4/jm-glibc-io.m4: $(srcdir)/m4/jm-glibc-io.m4n Makefile.am
+	echo dnl This file is automatically generated from $(notdir $<). \
+	  > $(t_io)
+	echo >> $(t_io)
+	sed							\
+	  -e 's/@space_separated@/$(unlocked_io_functions)/g'	\
+	  -e 's/@comma_separated@/$(comma_separated)/g'		\
+	  $< >> $(t_io)
+	move-if-change $(t_io) $@
+
+# This rule requires GNU make.
+unlocked-io.h: unlocked-io.hin Makefile.cfg
+	tmp=t$$$$;							\
+	echo						> $$tmp;	\
+	for f in $(base_functions); do					\
+	  u=`echo $$f|tr '[:lower:]' '[:upper:]'`;			\
+	  echo "#  if HAVE_$${u}_UNLOCKED"		>> $$tmp;	\
+	  echo "#   undef $$f"				>> $$tmp;	\
+	  echo "#   define $$f(S) $${f}_unlocked (S)"	>> $$tmp;	\
+	  echo '#endif'					>> $$tmp;	\
+	done;								\
+	sed "/^@replace_this@$$/r$$tmp" $<				\
+	  | sed "/^@replace_this@$$/d"					\
+	  > $@t;							\
+	rm -f $$tmp;							\
+	mv $@t $@
-- 
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