Enable a statically-linked version of slsh to be built and installed

Adapt an upstream patch to make it apply on 2.3.0. Unnecessary changes
have been ignored.

Repository: git://git.jedsoft.org/git/slang.git
Commit ID: 3796db6fb94a2fc7fe2fb0b6918501b69a4d3a02
Author: John E. Davis <jed@jedsoft.org>

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
---
diff -rup a/autoconf/Makefile.in b/autoconf/Makefile.in
--- a/autoconf/Makefile.in	2014-09-18 04:02:24.000000000 +0100
+++ b/autoconf/Makefile.in	2014-12-08 11:59:30.879313080 +0000
@@ -41,16 +41,19 @@ src/Makefile: configure src/Makefile.in 
 #
 makefiles: Makefile slsh/Makefile modules/Makefile src/Makefile
 help:
-	@echo "make install : install a shared version of the library"
-	@echo "make install-static : install a static version"
-	@echo "make install-all : install both shared and static versions"
-	@echo "make check : Build the library and run the regression tests"
+	@echo "make install ==> shared version of the library, slsh and modules"
+	@echo "make install-static ==> static version of the library and slsh; no modules"
+	@echo "make install-all ==> shared/static versions of the library/modules + shared slsh."
+	@echo "make install-modules ==> install the modules"
+	@echo "make check ==> Build the library and run the regression tests"
 slang.pc: configure autoconf/slangpc.in
 	@echo "slang.pc needs to be updated -- rerun configure"
 	@exit 1
 static: makefiles slang.pc
 	cd src; $(MAKE) static
-	cd slsh; $(MAKE) all
+	cd slsh; $(MAKE) static
+modules:
+	cd modules; $(MAKE) all
 elf: makefiles slang.pc
 	cd src; $(MAKE) elf
 	cd slsh; $(MAKE) all
@@ -73,10 +76,11 @@ clean:
 	cd demo; $(MAKE) clean
 install-static:
 	cd src; $(MAKE) install-static
+	cd slsh; $(MAKE) install-static
 install-pkgconfig: slang.pc
 	$(MKINSDIR) $(DEST_PKGCONFIGDIR)
 	$(INSTALL_DATA) slang.pc $(DEST_PKGCONFIGDIR)/
-install-elf:
+install-elf: install-pkgconfig
 	cd src; $(MAKE) install-elf
 	@echo Now installing slsh
 	cd slsh; $(MAKE) install
@@ -86,7 +90,10 @@ install-elf:
 	@echo "On some systems, e.g., linux, you may also have to run ldconfig."
 	@echo ""
 install: install-elf install-pkgconfig
-install-all: install-elf install-static install-pkgconfig
+install-all: install-elf
+	cd src; $(MAKE) install-static
+install-modules:
+	cd modules; $(MAKE) install
 install-links:
 	cd src; $(MAKE) install-links
 #
diff -rup a/slsh/Makefile.in b/slsh/Makefile.in
--- a/slsh/Makefile.in	2014-12-08 11:52:51.303284637 +0000
+++ b/slsh/Makefile.in	2014-12-08 12:06:44.811939732 +0000
@@ -16,7 +16,8 @@ SLANG_INST_INC	= -I@includedir@
 SLANG_INST_LIB	= -L$(INST_LIB_DIR)
 #---------------------------------------------------------------------------
 SLANG_SRCINC	= -I@SRCDIR@
-SLANG_SRCLIB	= -L@ELFDIR@
+SLANG_ELFLIB	= -L@ELFDIR@#  for dynamically linked
+SLANG_OBJLIB	= -L@OBJDIR@#  for statically linked
 #---------------------------------------------------------------------------
 OTHER_LIBS	= @TERMCAP@ @DYNAMIC_LINK_LIB@ @LIBS@ @M_LIB@
 RPATH		= @RPATH@
@@ -73,10 +74,12 @@ INST_LIBS = $(DEST_LIB_DIR) $(RPATH) $(S
 DEFS = -DSLSH_CONF_DIR='"$(SLSH_CONF_DIR)"' -DSLSH_PATH='"$(SLSH_LIB_DIR)"' \
  -DSLSH_CONF_DIR_ENV='$(SLSH_CONF_DIR_ENV)' -DSLSH_LIB_DIR_ENV='$(SLSH_LIB_DIR_ENV)' \
  -DSLSH_PATH_ENV='$(SLSH_PATH_ENV)'
-SRC_LIBS = $(SLANG_SRCLIB) -lslang $(READLINE_LIB) $(OTHER_LIBS)
+SRC_LIBS = $(SLANG_ELFLIB) -lslang $(READLINE_LIB) $(OTHER_LIBS)
+STATIC_SRC_LIBS = $(SLANG_OBJLIB) -lslang $(READLINE_LIB) $(OTHER_LIBS)
 #
 all: $(OBJDIR)/slsh_exe
 slsh: $(OBJDIR)/slsh
+static: $(OBJDIR)/slsh_static
 $(OBJDIR)/slsh_exe: $(OBJDIR)/slsh.o $(OBJDIR)/readline.o
 	$(CC) $(CFLAGS) $(OBJDIR)/slsh.o $(OBJDIR)/readline.o -o $(OBJDIR)/slsh_exe $(LDFLAGS) $(SRC_LIBS)
 $(OBJDIR)/slsh: $(OBJDIR)/slsh.o $(OBJDIR)/readline.o
@@ -85,6 +88,8 @@ $(OBJDIR)/slsh.o: $(OBJDIR) slsh.c slsh.
 	cd $(OBJDIR) && $(CC) $(SLANG_SRCINC) $(CFLAGS) -c $(DEFS) $(SRCDIR)/slsh.c
 $(OBJDIR)/readline.o: $(OBJDIR) readline.c slsh.h config.h Makefile
 	cd $(OBJDIR) && $(CC) $(SLANG_SRCINC) $(CFLAGS) -c $(DEFS) -DUSE_GNU_READLINE=$(GNU_READLINE) $(SRCDIR)/readline.c
+$(OBJDIR)/slsh_static: $(OBJDIR)/slsh.o $(OBJDIR)/readline.o
+	$(CC) $(CFLAGS) $(OBJDIR)/slsh.o $(OBJDIR)/readline.o -o $(OBJDIR)/slsh_static $(LDFLAGS) $(STATIC_SRC_LIBS)
 $(OBJDIR):
 	-$(MKINSDIR) $(OBJDIR)
 config.h: ../src/config.h
@@ -151,6 +156,12 @@ install: slsh install_directories instal
 	$(INSTALL_DATA) etc/slsh.rc $(DEST_SLSH_CONF_DIR)/
 	echo 'prepend_to_slang_load_path("$(SLSH_LOCALLIB_DIR)");' >> $(DEST_SLSH_CONF_DIR)/slsh.rc
 	$(INSTALL_DATA) doc/man/slsh.1 $(DEST_MAN_DIR)/
+install-static: static install_directories install_lib_files install_rline_files \
+ install_scripts install_help install_docs
+	$(INSTALL) $(OBJDIR)/slsh_static $(DEST_BIN_DIR)/slsh
+	$(INSTALL_DATA) etc/slsh.rc $(DEST_SLSH_CONF_DIR)/
+	echo 'prepend_to_slang_load_path("$(SLSH_LOCALLIB_DIR)");' >> $(DEST_SLSH_CONF_DIR)/slsh.rc
+	$(INSTALL_DATA) doc/man/slsh.1 $(DEST_MAN_DIR)/
 #---------------------------------------------------------------------------
 # Housekeeping
 #---------------------------------------------------------------------------
@@ -161,5 +172,5 @@ distclean: clean
 #
 .PHONY: all clean distclean symlinks slsh install install_directories \
   install_lib_files install_rline_files install_scripts install_help \
-  install_docs
+  install_docs install-static static