Initial revision

m4/Makefile.am

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+## Process this file with automake to produce Makefile.in   -*-Makefile-*-
+
+##m4-files-begin
+EXTRA_DIST = README Makefile.am.in malloc.m4 perl.m4 realloc.m4
+
+##m4-files-end
+
+Makefile.am: Makefile.am.in
+	rm -f $@ $@t
+	sed -n '1,/^##m4-files-begin/p' $< > $@t
+	( echo EXTRA_DIST = README Makefile.am.in; \
+	  find . -type f -name '*.m4' -print |sed 's,^\./,,' |sort ) \
+	  |fmt | (tr '\012' @; echo) \
+	      |sed 's/@$$/%/;s/@/ \\@/g' |tr @% '\012\012' \
+	        >> $@t
+	sed -n '/^##m4-files-end/,$$p' $< >> $@t
+	chmod a-w $@t
+	mv $@t $@

m4/Makefile.am.in

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+## Process this file with automake to produce Makefile.in   -*-Makefile-*-
+
+##m4-files-begin
+##m4-files-end
+
+Makefile.am: Makefile.am.in
+	rm -f $@ $@t
+	sed -n '1,/^##m4-files-begin/p' $< > $@t
+	( echo EXTRA_DIST = README Makefile.am.in; \
+	  find . -type f -name '*.m4' -print |sed 's,^\./,,' |sort ) \
+	  |fmt | (tr '\012' @; echo) \
+	      |sed 's/@$$/%/;s/@/ \\@/g' |tr @% '\012\012' \
+	        >> $@t
+	sed -n '/^##m4-files-end/,$$p' $< >> $@t
+	chmod a-w $@t
+	mv $@t $@

m4/README

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+These files are used by a program called aclocal (part of the GNU automake
+package).  aclocal uses these files to create aclocal.m4 which is in turn
+used by autoconf to create the configure script at the the top level in
+this distribution.
+
+The Makefile.am file in this directory is automatically generated
+from the template file, Makefile.am.in.  The generation will fail
+if you don't have all the right tools.

m4/malloc.m4

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+#serial 1
+
+dnl From Jim Meyering.
+dnl Determine whether malloc accepts 0 as its argument.
+dnl If it doesn't, arrange to use the replacement function.
+dnl
+dnl If you use this macro in a package, you should
+dnl add the following two lines to acconfig.h:
+dnl  /* Define to rpl_malloc if the replacement function should be used.  */
+dnl  #undef malloc
+dnl
+
+AC_DEFUN(jm_FUNC_MALLOC,
+[
+ if test x = y; then
+   dnl This code is deliberately never run via ./configure.
+   dnl FIXME: this is a gross hack to make autoheader put an entry
+   dnl for this symbol in config.h.in.
+   AC_CHECK_FUNCS(DONE_WORKING_MALLOC_CHECK)
+ fi
+ dnl xmalloc.c requires that this symbol be defined so it doesn't
+ dnl mistakenly use a broken malloc -- as it might if this test were omitted.
+ ac_kludge=HAVE_DONE_WORKING_MALLOC_CHECK
+ AC_DEFINE_UNQUOTED($ac_kludge)
+
+ AC_CACHE_CHECK([for working malloc], jm_cv_func_working_malloc,
+  [AC_TRY_RUN([
+    char *malloc ();
+    int
+    main ()
+    {
+      exit (malloc (0) ? 0 : 1);
+    }
+	  ],
+	 jm_cv_func_working_malloc=yes,
+	 jm_cv_func_working_malloc=no,
+	 dnl When crosscompiling, assume malloc is broken.
+	 jm_cv_func_working_malloc=no)
+  ])
+  if test $jm_cv_func_working_malloc = no; then
+    LIBOBJS="$LIBOBJS malloc.o"
+    AC_DEFINE_UNQUOTED(malloc, rpl_malloc)
+  fi
+])

m4/perl.m4

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+#serial 1
+
+dnl From Jim Meyering.
+dnl Find a new-enough version of Perl.
+dnl
+
+AC_DEFUN(jm_PERL,
+[
+  dnl FIXME: don't hard-code 5.003
+  dnl FIXME: should we cache the result?
+  AC_MSG_CHECKING([for perl5.003 or newer])
+  if test "${PERL+set}" = set; then
+    # `PERL' is set in the user's environment.
+    candidate_perl_names="$PERL"
+    perl_specified=yes
+  else
+    candidate_perl_names='perl perl5'
+    perl_specified=no
+  fi
+
+  found=no
+  AC_SUBST(PERL)
+  PERL="$missing_dir/missing perl"
+  for perl in $candidate_perl_names; do
+    # Run test in a subshell; some versions of sh will print an error if
+    # an executable is not found, even if stderr is redirected.
+    if ( $perl -e 'require 5.003' ) > /dev/null 2>&1; then
+      PERL=$perl
+      found=yes
+      break
+    fi
+  done
+
+  AC_MSG_RESULT($found)
+  test $found = no && AC_MSG_WARN([
+*** You don't seem to have perl5.003 or newer installed.
+*** Because of that, you may be unable to regenerate certain files
+*** if you modify the sources from which they are derived.] )
+])

m4/realloc.m4

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+#serial 1
+
+dnl From Jim Meyering.
+dnl Determine whether realloc works when both arguments are 0.
+dnl If it doesn't, arrange to use the replacement function.
+dnl
+dnl If you use this macro in a package, you should
+dnl add the following two lines to acconfig.h:
+dnl  /* Define to rpl_realloc if the replacement function should be used.  */
+dnl  #undef realloc
+dnl
+
+AC_DEFUN(jm_FUNC_REALLOC,
+[
+ if test x = y; then
+   dnl This code is deliberately never run via ./configure.
+   dnl FIXME: this is a gross hack to make autoheader put an entry
+   dnl for this symbol in config.h.in.
+   AC_CHECK_FUNCS(DONE_WORKING_REALLOC_CHECK)
+ fi
+ dnl xmalloc.c requires that this symbol be defined so it doesn't
+ dnl mistakenly use a broken realloc -- as it might if this test were omitted.
+ ac_kludge=HAVE_DONE_WORKING_REALLOC_CHECK
+ AC_DEFINE_UNQUOTED($ac_kludge)
+
+ AC_CACHE_CHECK([for working realloc], jm_cv_func_working_realloc,
+  [AC_TRY_RUN([
+    char *realloc ();
+    int
+    main ()
+    {
+      exit (realloc (0, 0) ? 0 : 1);
+    }
+	  ],
+	 jm_cv_func_working_realloc=yes,
+	 jm_cv_func_working_realloc=no,
+	 dnl When crosscompiling, assume realloc is broken.
+	 jm_cv_func_working_realloc=no)
+  ])
+  if test $jm_cv_func_working_realloc = no; then
+    LIBOBJS="$LIBOBJS realloc.o"
+    AC_DEFINE_UNQUOTED(realloc, rpl_realloc)
+  fi
+])