doc: post process html with non-GNU make programs

* .gitignore (/build-aux/makeinfo-wrapper.sh):
* Makefile.am (EXTRA_DIST): Remove build-aux/makeinfo-wrapper.sh.
* build-aux/makeinfo-wrapper.sh.in: New file, renamed from
build-aux/makeinfo-wrapper.sh and modified to use @MAKEINFO@ instead of
makeinfo.
* cfg.mk (MAKEINFO): Remove variable.
* configure.ac: Add build-aux/makeinfo-wrapper.sh as a configure file.
* doc/local.mk (MAKEINFO): Define to
$(abs_top_builddir)/build-aux/makeinfo-wrapper.sh.
(AM_MAKEINFOFLAGS): Move over some values from the previous MAKEINFO
definition.

.gitignore

@@ -29,6 +29,7 @@
 /build-aux/config.sub
 /build-aux/depcomp
 /build-aux/install-sh
+/build-aux/makeinfo-wrapper.sh
 /build-aux/mdate-sh
 /build-aux/missing
 /build-aux/snippet/

Makefile.am

@@ -32,7 +32,6 @@ EXTRA_DIST =				\
   bootstrap.conf			\
   build-aux/gen-lists-of-programs.sh	\
   build-aux/gen-single-binary.sh	\
-  build-aux/makeinfo-wrapper.sh		\
   cfg.mk				\
   dist-check.mk				\
   maint.mk				\

build-aux/makeinfo-wrapper.sh.in

@@ -3,7 +3,7 @@
 # only on lines containing "option", corresponding to our @optAnchor macro.
 # Note texi uses "-" in anchors for spaces, hence why it escapes - with _002d.
 
-makeinfo "$@" || exit
+@MAKEINFO@ "$@" || exit
 
 process_html()
 {

cfg.mk

@@ -17,8 +17,6 @@
 # Used in maint.mk's web-manual rule
 manual_title = Core GNU utilities
 
-# html post processing
-export MAKEINFO = $(abs_top_srcdir)/build-aux/makeinfo-wrapper.sh
 # Don't create node redirection files for each anchor
 gendocs_options_ = --common --no-node-files
 

configure.ac

@@ -904,4 +904,6 @@ AC_CONFIG_FILES(
   po/Makefile.in
   gnulib-tests/Makefile
   )
+AC_CONFIG_FILES([build-aux/makeinfo-wrapper.sh],
+                [chmod +x build-aux/makeinfo-wrapper.sh])
 AC_OUTPUT

doc/local.mk

@@ -25,9 +25,11 @@ doc_coreutils_TEXINFOS = \
   doc/fdl.texi \
   doc/sort-version.texi
 
+MAKEINFO = $(abs_top_builddir)/build-aux/makeinfo-wrapper.sh
+
 # The customization variable CHECK_NORMAL_MENU_STRUCTURE is necessary with
 # makeinfo versions ≥ 6.8.
-MAKEINFO = @MAKEINFO@ -c CHECK_NORMAL_MENU_STRUCTURE=1
+AM_MAKEINFOFLAGS = -c CHECK_NORMAL_MENU_STRUCTURE=1
 
 # The following is necessary if the package name is 8 characters or longer.
 # If the info documentation would be split into 10 or more separate files,
@@ -37,7 +39,7 @@ MAKEINFO = @MAKEINFO@ -c CHECK_NORMAL_MENU_STRUCTURE=1
 # Otherwise, it would also generate files with names like <package>.info-[123],
 # and those names all map to one 14-byte name (<package>.info-) on some crufty
 # old systems.
-AM_MAKEINFOFLAGS = --no-split
+AM_MAKEINFOFLAGS += --no-split
 
 doc/constants.texi: $(top_srcdir)/src/tail.c $(top_srcdir)/src/shred.c
 	$(AM_V_GEN)LC_ALL=C; export LC_ALL; \