Improvements to tip430 to embed the /library file system within a shared library

or as a zip archive with a canonical name matching the current patch level

This new version also builds a native executable version of minizip to 
allow archive to be built within make, even when cross compiling

Added a new function TclZipfs_AppHook which implements tip430 core
behavior startups to stock tclsh

Embedding the file system as a zip archive can be defeated with --enable-zipfs=no

6 files changed, 498 insertions, 5 deletions

diff --git a/unix/Makefile.in b/unix/Makefile.in
index 5f4e125..d7cc3c7 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -199,6 +199,10 @@ LD_SEARCH_FLAGS	= @LD_SEARCH_FLAGS@
 BUILD_DLTEST		= @BUILD_DLTEST@
 #BUILD_DLTEST		=
 
+TCL_ZIP_FILE		= @TCL_ZIP_FILE@
+TCL_VFS_PATH		= libtcl.vfs/tcl_library
+TCL_VFS_ROOT		= libtcl.vfs
+
 TCL_LIB_FILE		= @TCL_LIB_FILE@
 #TCL_LIB_FILE		= libtcl.a
 
@@ -242,6 +246,14 @@ ZLIB_DIR		= ${COMPAT_DIR}/zlib
 ZLIB_INCLUDE		= @ZLIB_INCLUDE@
 
 CC			= @CC@
+OBJEXT		        = @OBJEXT@
+HOST_CC		        = @CC_FOR_BUILD@
+HOST_EXEEXT             = @EXEEXT_FOR_BUILD@
+HOST_OBJEXT             = @OBJEXT_FOR_BUILD@
+ZIPFS_BUILD	        = @ZIPFS_BUILD@
+NATIVE_ZIP		= @ZIP_PROG@
+SHARED_BUILD		= @SHARED_BUILD@
+
 #CC			= purify -best-effort @CC@ -DPURIFY
 
 # Flags to be passed to installManPage to control how the manpages should be
@@ -251,6 +263,10 @@ MAN_FLAGS               = @MAN_FLAGS@
 # If non-empty, install the timezone files that are included with Tcl,
 # otherwise use the ones that ship with the OS.
 INSTALL_TZDATA		= @INSTALL_TZDATA@
+INSTALL_LIBRARIES       = @INSTALL_LIBRARIES@
+INSTALL_MSGS            = @INSTALL_MSGS@
+
+
 
 #--------------------------------------------------------------------------
 # The information below is usually usable as is. The configure script won't
@@ -617,6 +633,26 @@ ZLIB_SRCS = \
 SRCS = $(GENERIC_SRCS) $(TOMMATH_SRCS) $(UNIX_SRCS) $(NOTIFY_SRCS) \
 	$(OO_SRCS) $(STUB_SRCS) @PLAT_SRCS@ @ZLIB_SRCS@
 
+# Minizip
+MINIZIP_OBJS = \
+        adler32.$(HOST_OBJEXT) \
+        compress.$(HOST_OBJEXT) \
+        crc32.$(HOST_OBJEXT) \
+        deflate.$(HOST_OBJEXT) \
+        infback.$(HOST_OBJEXT) \
+        inffast.$(HOST_OBJEXT) \
+        inflate.$(HOST_OBJEXT) \
+        inftrees.$(HOST_OBJEXT) \
+        ioapi.$(HOST_OBJEXT) \
+        trees.$(HOST_OBJEXT) \
+        uncompr.$(HOST_OBJEXT) \
+        zip.$(HOST_OBJEXT) \
+        zutil.$(HOST_OBJEXT) \
+        minizip.$(HOST_OBJEXT)
+
+ZIP_INSTALL_OBJS =  minizip${EXEEXT_FOR_BUILD}
+
+
 #--------------------------------------------------------------------------
 # Start of rules
 #--------------------------------------------------------------------------
@@ -629,11 +665,23 @@ libraries:
 
 doc:
 
+tclzipfile: ${TCL_ZIP_FILE}
+
+
+${TCL_ZIP_FILE}:  ${ZIP_INSTALL_OBJS}
+	rm -rf ${TCL_VFS_ROOT}
+	mkdir -p ${TCL_VFS_PATH}
+	cp -a ../library/* ${TCL_VFS_PATH}
+	cd  ${TCL_VFS_ROOT} ; ../minizip${EXEEXT_FOR_BUILD} -o ../${TCL_ZIP_FILE} `find . -type f`
+
 # The following target is configured by autoconf to generate either a shared
 # library or non-shared library for Tcl.
-${LIB_FILE}: ${STUB_LIB_FILE} ${OBJS}
+${LIB_FILE}: ${STUB_LIB_FILE} ${OBJS} ${TCL_ZIP_FILE}
 	rm -f $@
 	@MAKE_LIB@
+ifeq (${ZIPFS_BUILD},1)
+	cat ${TCL_ZIP_FILE} >> ${LIB_FILE}
+endif
 
 ${STUB_LIB_FILE}: ${STUB_LIB_OBJS}
 	@if test "x${LIB_FILE}" = "xlibtcl${MAJOR_VERSION}.${MINOR_VERSION}.dll"; then \
@@ -667,7 +715,8 @@ Makefile: $(UNIX_DIR)/Makefile.in $(DLTEST_DIR)/Makefile.in
 
 clean: clean-packages
 	rm -rf *.a *.o libtcl* core errs *~ \#* TAGS *.E a.out \
-		errors ${TCL_EXE} ${TCLTEST_EXE} lib.exp Tcl @DTRACE_HDR@
+		errors ${TCL_EXE} ${TCLTEST_EXE} lib.exp Tcl @DTRACE_HDR@ \
+		minizip${EXEEXT_FOR_BUILD} *.${HOST_OBJEXT}
 	cd dltest ; $(MAKE) clean
 
 distclean: distclean-packages clean
@@ -777,7 +826,7 @@ trace-test: ${TCLTEST_EXE}
 # Installation rules
 #--------------------------------------------------------------------------
 
-INSTALL_BASE_TARGETS = install-binaries install-libraries install-msgs $(INSTALL_TZDATA)
+INSTALL_BASE_TARGETS = install-binaries $(INSTALL_LIBRARIES) $(INSTALL_MSGS) $(INSTALL_TZDATA)
 INSTALL_DOC_TARGETS = install-doc
 INSTALL_PACKAGE_TARGETS = install-packages
 INSTALL_DEV_TARGETS = install-headers
@@ -821,6 +870,25 @@ install-binaries: binaries
 	@$(INSTALL_DATA_DIR) $(LIB_INSTALL_DIR)/pkgconfig
 	@$(INSTALL_DATA) tcl.pc $(LIB_INSTALL_DIR)/pkgconfig/tcl.pc
 
+install-libraries-zipfs-shared: libraries
+	@for i in "$(SCRIPT_INSTALL_DIR)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	@echo "Installing library files to $(SCRIPT_INSTALL_DIR)/";
+	@for i in \
+		$(UNIX_DIR)/tclAppInit.c @LDAIX_SRC@ @DTRACE_SRC@; \
+	    do \
+	    $(INSTALL_DATA) $$i "$(SCRIPT_INSTALL_DIR)"; \
+	    done;
+
+install-libraries-zipfs-static: install-libraries-zipfs-shared
+	$(INSTALL_DATA) ${TCL_ZIP_FILE} "$(LIB_INSTALL_DIR)" ;\
+
 install-libraries: libraries
 	@for i in "$(SCRIPT_INSTALL_DIR)"; \
 	    do \
@@ -875,6 +943,7 @@ install-libraries: libraries
 	    echo "if {![interp issafe]} { ::tcl::tm::roots {$(TCL_MODULE_PATH)} }" >> \
 	        "$(SCRIPT_INSTALL_DIR)"/tm.tcl; \
 	fi
+	end
 
 install-tzdata:
 	@for i in tzdata; \
@@ -1282,6 +1351,8 @@ tclPkgConfig.o: $(GENERIC_DIR)/tclPkgConfig.c
 		-DCFG_RUNTIME_SCRDIR="\"$(TCL_LIBRARY)\"" \
 		-DCFG_RUNTIME_INCDIR="\"$(includedir)\"" \
 		-DCFG_RUNTIME_DOCDIR="\"$(mandir)\"" \
+		-DCFG_RUNTIME_DLLFILE="\"$(TCL_LIB_FILE)\"" \
+		-DCFG_RUNTIME_ZIPFILE="\"$(TCL_ZIP_FILE)\"" \
 		\
 		$(GENERIC_DIR)/tclPkgConfig.c
 
@@ -1331,7 +1402,11 @@ tclZlib.o: $(GENERIC_DIR)/tclZlib.c
 	$(CC) -c $(CC_SWITCHES) $(ZLIB_INCLUDE) $(GENERIC_DIR)/tclZlib.c
 
 tclZipfs.o: $(GENERIC_DIR)/tclZipfs.c
-	$(CC) -c $(CC_SWITCHES) $(ZLIB_INCLUDE) -I$(ZLIB_DIR)/contrib/minizip $(GENERIC_DIR)/tclZipfs.c
+	$(CC) -c $(CC_SWITCHES) \
+	-DCFG_RUNTIME_DLLFILE="\"$(TCL_LIB_FILE)\"" \
+	-DCFG_RUNTIME_ZIPFILE="\"$(TCL_ZIP_FILE)\"" \
+	-DCFG_RUNTIME_PATH="\"$(DLL_INSTALL_DIR)\"" \
+	$(ZLIB_INCLUDE) -I$(ZLIB_DIR)/contrib/minizip $(GENERIC_DIR)/tclZipfs.c
 
 tclTest.o: $(GENERIC_DIR)/tclTest.c $(IOHDR) $(TCLREHDRS)
 	$(CC) -c $(APP_CC_SWITCHES) $(GENERIC_DIR)/tclTest.c
@@ -1741,6 +1816,74 @@ tclOOStubLib.o: $(GENERIC_DIR)/tclOOStubLib.c
 	$(CC) -c $(CC_SWITCHES) $<
 
 #--------------------------------------------------------------------------
+# Minizip implementation
+#--------------------------------------------------------------------------
+adler32.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/adler32.c
+
+compress.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/compress.c
+
+crc32.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/crc32.c
+
+deflate.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/deflate.c
+
+ioapi.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -I$(ZLIB_DIR)/contrib/minizip -c $(ZLIB_DIR)/contrib/minizip/ioapi.c
+
+infback.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/infback.c
+
+inffast.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/inffast.c
+
+inflate.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/inflate.c
+
+inftrees.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/inftrees.c
+
+trees.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/trees.c
+
+uncompr.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/uncompr.c
+
+zip.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -I$(ZLIB_DIR)/contrib/minizip -c $(ZLIB_DIR)/contrib/minizip/zip.c
+
+zutil.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(ZLIB_DIR)/zutil.c
+
+minizip.$(HOST_OBJEXT):
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR)  -I$(ZLIB_DIR)/contrib/minizip -c $(ZLIB_DIR)/contrib/minizip/minizip.c
+
+minizip${EXEEXT_FOR_BUILD}: $(MINIZIP_OBJS)
+	$(HOST_CC) -o $@ $(MINIZIP_OBJS)
+
+tclvfs.zip: minizip${EXEEXT_FOR_BUILD}
+	rm -rf $(TCL_VFS_ROOT)
+	mkdir -p $(TCL_VFS_PATH)
+	@for i in "$(TCL_VFS_PATH)"; \
+	    do \
+	    if [ ! -d "$$i" ] ; then \
+		echo "Making directory $$i"; \
+		$(INSTALL_DATA_DIR) "$$i"; \
+		else true; \
+		fi; \
+	    done;
+	cp -a ../library/* $(TCL_VFS_PATH)
+	(cd $TCL_VFS ROOT ; ./minizip${EXEEXT_FOR_BUILD} -o ../tclvfs.zip `find . -type f`)
+
+zipsetupstub.$(HOST_OBJEXT): $(COMPAT_DIR)/zipsetupstub.c
+	$(HOST_CC) -o $@ -I$(ZLIB_DIR) -c $(COMPAT_DIR)/zipsetupstub.c
+
+zipsetupstub${EXEEXT_FOR_BUILD}: zipsetupstub.$(HOST_OBJEXT)
+	$(HOST_CC) -o $@ zipsetupstub.$(HOST_OBJEXT)
+
+#--------------------------------------------------------------------------
 # Bundled Package targets
 #--------------------------------------------------------------------------
 
@@ -2148,6 +2291,7 @@ BUILD_HTML = \
 .PHONY: install-tzdata install-msgs
 .PHONY: packages configure-packages test-packages clean-packages
 .PHONY: dist-packages distclean-packages install-packages
+.PHONY: iinstall-libraries-zipfs-shared install-libraries-zipfs-static tclzipfile
 
 #--------------------------------------------------------------------------
 # DO NOT DELETE THIS LINE -- make depend depends on it.
diff --git a/unix/configure b/unix/configure
index 129c283..8e2ec0f 100755
--- a/unix/configure
+++ b/unix/configure
@@ -658,12 +658,16 @@ TCL_STUB_LIB_FILE
 TCL_LIB_SPEC
 TCL_LIB_FLAG
 TCL_LIB_FILE
+TCL_ZIP_FILE
 PKG_CFG_ARGS
 TCL_YEAR
 TCL_PATCH_LEVEL
 TCL_MINOR_VERSION
 TCL_MAJOR_VERSION
 TCL_VERSION
+INSTALL_MSGS
+INSTALL_LIBRARIES
+ZIPFS_BUILD
 DTRACE
 LDFLAGS_DEFAULT
 CFLAGS_DEFAULT
@@ -698,7 +702,11 @@ RANLIB
 ZLIB_INCLUDE
 ZLIB_SRCS
 ZLIB_OBJS
+EXEEXT_FOR_BUILD
+CC_FOR_BUILD
+ZIP_PROG
 TCLSH_PROG
+SHARED_BUILD
 TCL_THREADS
 EGREP
 GREP
@@ -748,7 +756,8 @@ PACKAGE_VERSION
 PACKAGE_TARNAME
 PACKAGE_NAME
 PATH_SEPARATOR
-SHELL'
+SHELL
+OBJEXT_FOR_BUILD'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
@@ -768,6 +777,7 @@ enable_langinfo
 enable_dll_unloading
 with_tzdata
 enable_dtrace
+enable_zipfs
 enable_framework
 '
       ac_precious_vars='build_alias
@@ -1408,6 +1418,7 @@ Optional Features:
                           startup, otherwise use old heuristic (default: on)
   --enable-dll-unloading  enable the 'unload' command (default: on)
   --enable-dtrace         build with DTrace support (default: off)
+  --enable-zipfs          build with Zipfs support (default: on)
   --enable-framework      package shared libraries in MacOSX frameworks
                           (default: off)
 
@@ -2330,6 +2341,7 @@ VERSION=${TCL_VERSION}
 
 EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
 EXTRA_BUILD_HTML=${EXTRA_BUILD_HTML:-"@:"}
+TCL_ZIP_FILE=libtcl_${TCL_MAJOR_VERSION}_${TCL_MINOR_VERSION}_${TCL_PATCH_LEVEL}.zip
 
 #------------------------------------------------------------------------
 # Setup configure arguments for bundled packages
@@ -3273,6 +3285,7 @@ _ACEOF
 esac
 
 
+
 #--------------------------------------------------------------------
 # Supply substitutes for missing POSIX header files.  Special notes:
 #	- stdlib.h doesn't define strtol, strtoul, or
@@ -4545,6 +4558,7 @@ $as_echo "#define STATIC_BUILD 1" >>confdefs.h
     fi
 
 
+
 #--------------------------------------------------------------------
 # Look for a native installed tclsh binary (if available)
 # If one cannot be found then use the binary we build (fails for
@@ -4590,6 +4604,120 @@ if test "$TCLSH_PROG" = ""; then
   TCLSH_PROG='./${TCL_EXE}'
 fi
 
+#
+# Check for --enable-zipfs flag
+#
+SC_ENABLE_ZIPFS
+
+#
+# Find a native zip implementation
+#
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for zip" >&5
+$as_echo_n "checking for zip... " >&6; }
+    if ${ac_cv_path_zip+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/zip 2> /dev/null` \
+		    `ls -r $dir/zip 2> /dev/null` ; do
+		if test x"$ac_cv_path_zip" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_zip=$j
+			break
+		    fi
+		fi
+	    done
+	done
+
+fi
+
+
+    if test -f "$ac_cv_path_zip" ; then
+	ZIP_PROG="$ac_cv_path_zip"
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ZIP_PROG" >&5
+$as_echo "$ZIP_PROG" >&6; }
+    else
+	# It is not an error if an installed version of Zip can't be located.
+	ZIP_PROG=""
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: No zip found on PATH" >&5
+$as_echo "No zip found on PATH" >&6; }
+    fi
+
+
+
+#
+# Find a native compiler
+#
+# Put a plausible default for CC_FOR_BUILD in Makefile.
+if test -z "$CC_FOR_BUILD"; then
+  if test "x$cross_compiling" = "xno"; then
+    CC_FOR_BUILD='$(CC)'
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc" >&5
+$as_echo_n "checking for gcc... " >&6; }
+    if ${ac_cv_path_cc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/gcc 2> /dev/null` \
+		    `ls -r $dir/gcc 2> /dev/null` ; do
+		if test x"$ac_cv_path_cc" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_cc=$j
+			break
+		    fi
+		fi
+	    done
+	done
+
+fi
+
+  fi
+fi
+
+# Also set EXEEXT_FOR_BUILD.
+if test "x$cross_compiling" = "xno"; then
+  EXEEXT_FOR_BUILD='$(EXEEXT)'
+  OBJEXT_FOR_BUILD='$(OBJEXT)'
+else
+  OBJEXT_FOR_BUILD='.no'
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for build system executable suffix" >&5
+$as_echo_n "checking for build system executable suffix... " >&6; }
+if ${bfd_cv_build_exeext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  rm -f conftest*
+     echo 'int main () { return 0; }' > conftest.c
+     bfd_cv_build_exeext=
+     ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
+     for file in conftest.*; do
+       case $file in
+       *.c | *.o | *.obj | *.ilk | *.pdb) ;;
+       *) bfd_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
+       esac
+     done
+     rm -f conftest*
+     test x"${bfd_cv_build_exeext}" = x && bfd_cv_build_exeext=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $bfd_cv_build_exeext" >&5
+$as_echo "$bfd_cv_build_exeext" >&6; }
+  EXEEXT_FOR_BUILD=""
+  test x"${bfd_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${bfd_cv_build_exeext}
+fi
+
+
+if test "$ZIP_PROG" = ""; then
+  ZIP_PROG='./minizip${EXEEXT_FOR_BUILD}'
+fi
+
+
+
+
 #------------------------------------------------------------------------
 #	Add stuff for zlib
 #------------------------------------------------------------------------
@@ -10151,6 +10279,53 @@ fi
 $as_echo "$tcl_ok" >&6; }
 
 #--------------------------------------------------------------------
+#	Zipfs support
+#--------------------------------------------------------------------
+
+# Check whether --enable-zipfs was given.
+if test "${enable_zipfs+set}" = set; then :
+  enableval=$enable_zipfs; tcl_ok=$enableval
+else
+  tcl_ok=yes
+fi
+
+    if test "$tcl_ok" = "yes" -o "${TCL_THREADS}" = 1; then
+	ZIPFS_BUILD=1
+    else
+	ZIPFS_BUILD=0
+    fi
+    # Do checking message here to not mess up interleaved configure output
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for building with zipfs" >&5
+$as_echo_n "checking for building with zipfs... " >&6; }
+    if test "${ZIPFS_BUILD}" = 1; then
+        if test "${SHARED_BUILD}" = 0; then
+           ZIPFS_BUILD=2;
+
+$as_echo "#define ZIPFS_BUILD 2" >>confdefs.h
+
+           INSTALL_LIBRARIES=install-libraries-zipfs-static
+           { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+         else
+
+$as_echo "#define ZIPFS_BUILD 1" >>confdefs.h
+\
+           INSTALL_LIBRARIES=install-libraries-zipfs-shared
+           { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+        fi
+    else
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+	INSTALL_LIBRARIES=install-libraries
+	INSTALL_MSGS=install-msgs
+    fi
+
+
+
+
+
+#--------------------------------------------------------------------
 # The check below checks whether the cpuid instruction is usable.
 #--------------------------------------------------------------------
 
@@ -10436,6 +10611,7 @@ TCL_SHARED_BUILD=${SHARED_BUILD}
 
 
 
+
 ac_config_files="$ac_config_files Makefile:../unix/Makefile.in dltest/Makefile:../unix/dltest/Makefile.in tclConfig.sh:../unix/tclConfig.sh.in tcl.pc:../unix/tcl.pc.in"
 
 cat >confcache <<\_ACEOF
diff --git a/unix/configure.ac b/unix/configure.ac
index e14d85e..b2700cf 100644
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -30,6 +30,7 @@ VERSION=${TCL_VERSION}
 
 EXTRA_INSTALL_BINARIES=${EXTRA_INSTALL_BINARIES:-"@:"}
 EXTRA_BUILD_HTML=${EXTRA_BUILD_HTML:-"@:"}
+TCL_ZIP_FILE=libtcl_${TCL_MAJOR_VERSION}_${TCL_MINOR_VERSION}_${TCL_PATCH_LEVEL}.zip
 
 #------------------------------------------------------------------------
 # Setup configure arguments for bundled packages
@@ -86,6 +87,7 @@ fi
 AC_PROG_CC
 AC_C_INLINE
 
+
 #--------------------------------------------------------------------
 # Supply substitutes for missing POSIX header files.  Special notes:
 #	- stdlib.h doesn't define strtol, strtoul, or
@@ -153,6 +155,28 @@ if test "$TCLSH_PROG" = ""; then
   TCLSH_PROG='./${TCL_EXE}'
 fi
 
+#
+# Check for --enable-zipfs flag
+#
+SC_ENABLE_ZIPFS
+
+#
+# Find a native zip implementation
+#
+SC_PROG_ZIP
+
+#
+# Find a native compiler
+#
+AX_CC_FOR_BUILD
+
+if test "$ZIP_PROG" = ""; then
+  ZIP_PROG='./minizip${EXEEXT_FOR_BUILD}'
+fi
+
+
+
+
 #------------------------------------------------------------------------
 #	Add stuff for zlib
 #------------------------------------------------------------------------
@@ -791,6 +815,42 @@ fi
 AC_MSG_RESULT([$tcl_ok])
 
 #--------------------------------------------------------------------
+#	Zipfs support
+#--------------------------------------------------------------------
+
+AC_ARG_ENABLE(zipfs,
+    AC_HELP_STRING([--enable-zipfs],
+	[build with Zipfs support (default: on)]),
+    [tcl_ok=$enableval], [tcl_ok=yes])
+    if test "$tcl_ok" = "yes" -o "${TCL_THREADS}" = 1; then
+	ZIPFS_BUILD=1
+    else
+	ZIPFS_BUILD=0
+    fi
+    # Do checking message here to not mess up interleaved configure output
+    AC_MSG_CHECKING([for building with zipfs])
+    if test "${ZIPFS_BUILD}" = 1; then
+        if test "${SHARED_BUILD}" = 0; then
+           ZIPFS_BUILD=2;
+           AC_DEFINE(ZIPFS_BUILD, 2, [Are we building with zipfs enabled?])
+           INSTALL_LIBRARIES=install-libraries-zipfs-static
+           AC_MSG_RESULT([yes])
+         else
+           AC_DEFINE(ZIPFS_BUILD, 1, [Are we building with zipfs enabled?])\
+           INSTALL_LIBRARIES=install-libraries-zipfs-shared
+           AC_MSG_RESULT([yes])
+        fi
+    else
+	AC_MSG_RESULT([no])
+	INSTALL_LIBRARIES=install-libraries
+	INSTALL_MSGS=install-msgs
+    fi
+    AC_SUBST(ZIPFS_BUILD)
+    AC_SUBST(INSTALL_LIBRARIES)
+    AC_SUBST(INSTALL_MSGS)
+
+
+#--------------------------------------------------------------------
 # The check below checks whether the cpuid instruction is usable.
 #--------------------------------------------------------------------
 
@@ -960,6 +1020,7 @@ AC_SUBST(TCL_PATCH_LEVEL)
 AC_SUBST(TCL_YEAR)
 AC_SUBST(PKG_CFG_ARGS)
 
+AC_SUBST(TCL_ZIP_FILE)
 AC_SUBST(TCL_LIB_FILE)
 AC_SUBST(TCL_LIB_FLAG)
 AC_SUBST(TCL_LIB_SPEC)
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 45922e0..132e602 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -276,6 +276,7 @@ AC_DEFUN([SC_PATH_TKCONFIG], [
 #		TCL_BIN_DIR
 #		TCL_SRC_DIR
 #		TCL_LIB_FILE
+#		TCL_ZIP_FILE
 #------------------------------------------------------------------------
 
 AC_DEFUN([SC_LOAD_TCLCONFIG], [
@@ -289,6 +290,7 @@ AC_DEFUN([SC_LOAD_TCLCONFIG], [
     fi
 
     # eval is required to do the TCL_DBGX substitution
+    eval "TCL_ZIP_FILE=\"${TCL_ZIP_FILE}\""
     eval "TCL_LIB_FILE=\"${TCL_LIB_FILE}\""
     eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""
 
@@ -336,6 +338,7 @@ AC_DEFUN([SC_LOAD_TCLCONFIG], [
     AC_SUBST(TCL_BIN_DIR)
     AC_SUBST(TCL_SRC_DIR)
 
+    AC_SUBST(TCL_ZIP_FILE)
     AC_SUBST(TCL_LIB_FILE)
     AC_SUBST(TCL_LIB_FLAG)
     AC_SUBST(TCL_LIB_SPEC)
@@ -542,6 +545,7 @@ AC_DEFUN([SC_ENABLE_SHARED], [
 	SHARED_BUILD=0
 	AC_DEFINE(STATIC_BUILD, 1, [Is this a static build?])
     fi
+    AC_SUBST(SHARED_BUILD)
 ])
 
 #------------------------------------------------------------------------
@@ -3014,6 +3018,109 @@ if test "x$NEED_FAKE_RFC2553" = "x1"; then
    AC_CHECK_FUNC(strlcpy)
 fi
 ])
+
+#------------------------------------------------------------------------
+# SC_PROG_ZIP
+#	Locate a zip encoder installed on the system path, or none.
+#
+# Arguments:
+#	none
+#
+# Results:
+#	Substitutes the following vars:
+#		ZIP_PROG
+#------------------------------------------------------------------------
+
+AC_DEFUN([SC_PROG_ZIP], [
+    AC_MSG_CHECKING([for zip])
+    AC_CACHE_VAL(ac_cv_path_zip, [
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/zip 2> /dev/null` \
+		    `ls -r $dir/zip 2> /dev/null` ; do
+		if test x"$ac_cv_path_zip" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_zip=$j
+			break
+		    fi
+		fi
+	    done
+	done
+    ])
+
+    if test -f "$ac_cv_path_zip" ; then
+	ZIP_PROG="$ac_cv_path_zip"
+	AC_MSG_RESULT([$ZIP_PROG])
+    else
+	# It is not an error if an installed version of Zip can't be located.
+	ZIP_PROG=""
+	AC_MSG_RESULT([No zip found on PATH])
+    fi
+    AC_SUBST(ZIP_PROG)
+])
+
+#------------------------------------------------------------------------
+# SC_CC_FOR_BUILD
+#	For cross compiles, locate a C compiler that can generate native binaries.
+#
+# Arguments:
+#	none
+#
+# Results:
+#	Substitutes the following vars:
+#		CC_FOR_BUILD
+#		EXEEXT_FOR_BUILD
+#------------------------------------------------------------------------
+
+dnl Get a default for CC_FOR_BUILD to put into Makefile.
+AC_DEFUN([AX_CC_FOR_BUILD],
+[# Put a plausible default for CC_FOR_BUILD in Makefile.
+if test -z "$CC_FOR_BUILD"; then
+  if test "x$cross_compiling" = "xno"; then
+    CC_FOR_BUILD='$(CC)'
+  else
+    AC_MSG_CHECKING([for gcc])
+    AC_CACHE_VAL(ac_cv_path_cc, [
+	search_path=`echo ${PATH} | sed -e 's/:/ /g'`
+	for dir in $search_path ; do
+	    for j in `ls -r $dir/gcc 2> /dev/null` \
+		    `ls -r $dir/gcc 2> /dev/null` ; do
+		if test x"$ac_cv_path_cc" = x ; then
+		    if test -f "$j" ; then
+			ac_cv_path_cc=$j
+			break
+		    fi
+		fi
+	    done
+	done
+    ])
+  fi
+fi
+AC_SUBST(CC_FOR_BUILD)
+# Also set EXEEXT_FOR_BUILD.
+if test "x$cross_compiling" = "xno"; then
+  EXEEXT_FOR_BUILD='$(EXEEXT)'
+  OBJEXT_FOR_BUILD='$(OBJEXT)'
+else
+  OBJEXT_FOR_BUILD='.no'
+  AC_CACHE_CHECK([for build system executable suffix], bfd_cv_build_exeext,
+    [rm -f conftest*
+     echo 'int main () { return 0; }' > conftest.c
+     bfd_cv_build_exeext=
+     ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
+     for file in conftest.*; do
+       case $file in
+       *.c | *.o | *.obj | *.ilk | *.pdb) ;;
+       *) bfd_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
+       esac
+     done
+     rm -f conftest*
+     test x"${bfd_cv_build_exeext}" = x && bfd_cv_build_exeext=no])
+  EXEEXT_FOR_BUILD=""
+  test x"${bfd_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${bfd_cv_build_exeext}
+fi
+AC_SUBST(EXEEXT_FOR_BUILD)])dnl
+AC_SUBST(OBJEXT_FOR_BUILD)])dnl
 # Local Variables:
 # mode: autoconf
 # End:
diff --git a/unix/tclAppInit.c b/unix/tclAppInit.c
index 9bbc88b..3587f35 100644
--- a/unix/tclAppInit.c
+++ b/unix/tclAppInit.c
@@ -79,6 +79,8 @@ main(
 
 #ifdef TCL_LOCAL_MAIN_HOOK
     TCL_LOCAL_MAIN_HOOK(&argc, &argv);
+#else
+    TclZipfs_AppHook(&argc, &argv);
 #endif
 
     Tcl_Main(argc, argv, TCL_LOCAL_APPINIT);
diff --git a/unix/tclConfig.sh.in b/unix/tclConfig.sh.in
index fdc56b7..3da4afd 100644
--- a/unix/tclConfig.sh.in
+++ b/unix/tclConfig.sh.in
@@ -39,6 +39,9 @@ TCL_SHARED_BUILD=@TCL_SHARED_BUILD@
 # The name of the Tcl library (may be either a .a file or a shared library):
 TCL_LIB_FILE='@TCL_LIB_FILE@'
 
+# The name of a zip containing the /library and /encodings (may be either a .zip file or a shared library):
+TCL_ZIP_FILE='@TCL_ZIP_FILE@'
+
 # Additional libraries to use when linking Tcl.
 TCL_LIBS='@TCL_LIBS@'