From 33457202ce09232486a4456bc90a07d19ed5537a Mon Sep 17 00:00:00 2001
From: Tanaka Akira <akr@users.sourceforge.net>
Date: Mon, 14 Feb 2000 00:19:18 +0000
Subject: zsh-workers/9701

---
 Config/defs.mk.in |  3 +++
 INSTALL           | 17 +++++++++++++++--
 Src/Makefile.in   |  3 ++-
 Src/mkmodindex.sh |  7 +++++++
 configure.in      | 10 ++++++++++
 5 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/Config/defs.mk.in b/Config/defs.mk.in
index f19a40b21..ea2115484 100644
--- a/Config/defs.mk.in
+++ b/Config/defs.mk.in
@@ -62,6 +62,9 @@ DLLD            = @DLLD@
 EXPOPT          = @EXPOPT@
 IMPOPT          = @IMPOPT@
 
+# choose modules not to compile and install
+OMIT_MODULES    = @OMIT_MODULES@
+
 # utilities
 AWK             = @AWK@
 YODL            = @YODL@
diff --git a/INSTALL b/INSTALL
index b807c4abb..ef24ad690 100644
--- a/INSTALL
+++ b/INSTALL
@@ -59,8 +59,8 @@ is EPREFIX/lib/zsh/<zsh-version-number>, where EPREFIX defaults to PREFIX
 unless given explicitly, and PREFIX defaults to /usr/local.  See the end of
 this file for options to configure to change these.
 
-Adding more modules
--------------------
+Adding and removing modules
+---------------------------
 
 The zsh distribution contains several modules, in the Src/Builtins,
 Src/Modules and Src/Zle directories.  If you have any additional zsh
@@ -73,6 +73,18 @@ If you wish to add or remove modules or module directories after you
 have already run make, then after adding or removing the modules run:
     make prep
 
+You can also instruct the configuration process that a certain module
+should neither be compiled nor installed without modifying any files.  To
+do this, give the argument `--enable-omit-modules=mod1,mod2,...' to
+configure.  The module arguments are the full names of the modules,
+probably including the prefix `zsh/'.  For example,
+`configure --enable-omit-modules=zsh/zpty,zsh/example' says that the
+modules zsh/zpty and zsh/example are not to be compiled nor installed.
+Note that it is up to you to make sure the modules in question are not going
+to be compiled into the main zsh binary, as described in the next section.
+It is unlikely you would want to omit any of the modules liable to be
+compiled in by default.
+
 Controlling what is compiled into the main zsh binary
 -----------------------------------------------------
 
@@ -365,6 +377,7 @@ Features:
      fndir=directory     # the directory where shell functions will go
      site-fndir=directory# the directory where site-specific functions can go
      function-subdirs    # if functions will be installed into subdirectories
+     omit-modules=mod1,..# don't compile nor install the modules named mod1,...
      dynamic             # allow dynamically loaded binary modules
      lfs                 # allow configure check for large files
      locale              # allow use of locale library
diff --git a/Src/Makefile.in b/Src/Makefile.in
index b79299413..ebe708626 100644
--- a/Src/Makefile.in
+++ b/Src/Makefile.in
@@ -101,7 +101,8 @@ rm-modobjs-tmp:
 @CONFIG_MK@
 
 Makemod modules.index prep: modules-bltin $(CONFIG_INCS)
-	( cd $(sdir_top) && $(SHELL) $(subdir)/mkmodindex.sh $(subdir) ) \
+	( cd $(sdir_top) && OMIT_MODULES="$(OMIT_MODULES)" \
+	$(SHELL) $(subdir)/mkmodindex.sh $(subdir) ) \
 	    > modules.index.tmp
 	@if cmp -s modules.index.tmp modules.index; then \
 	    rm -f modules.index.tmp; \
diff --git a/Src/mkmodindex.sh b/Src/mkmodindex.sh
index 75a7e43bc..1f0b8e3bd 100644
--- a/Src/mkmodindex.sh
+++ b/Src/mkmodindex.sh
@@ -8,6 +8,8 @@
 echo "# module index generated by mkmodindex.sh"
 echo
 
+omit_modules="`echo $OMIT_MODULES | sed 's/,/ /'`"
+
 module_list=' '
 while test $# -ne 0; do
     dir=$1
@@ -27,6 +29,11 @@ while test $# -ne 0; do
 	    echo >&2 "         (ignoring duplicate)"
 	    continue
 	;; esac
+	case " $omit_modules " in *" $name "*)
+	    echo >&2 "Module \`$name' found in \$OMIT_MODULES"
+	    echo >&2 "         (omitting it)"
+	    continue
+	;; esac
 	module_list="$module_list$name "
 	echo "modfile_$q_name=$modfile"
 	eval "modfile_$q_name=\$modfile"
diff --git a/configure.in b/configure.in
index bc53d99bb..64e74b575 100644
--- a/configure.in
+++ b/configure.in
@@ -186,6 +186,16 @@ AC_ARG_ENABLE(dynamic,
 [  --disable-dynamic          turn off dynamically loaded binary modules],
 [dynamic="$enableval"], [dynamic=yes])
 
+dnl Do you want to disable a list of modules?
+dnl Unfortunately we can't give --disable-* a value, so we'll have
+dnl to do it as an `--enable-*', rather unnaturally.
+undefine([OMIT_MODULES])dnl
+AC_ARG_ENABLE(omit-modules,
+[  --enable-omit-modules      give comma-separated list of modules to ignore],
+[OMIT_MODULES="$enableval"], [OMIT_MODULES=])
+
+AC_SUBST(OMIT_MODULES)dnl
+
 dnl Do you want to compile as K&R C.
 AC_ARG_ENABLE(ansi2knr,
 [  --enable-ansi2knr          translate source to K&R C before compiling],
-- 
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