Shared library support

Makefile.in

@@ -29,6 +29,9 @@ srcdir=		@srcdir@
 VPATH=		@srcdir@
 INSTALL=	@INSTALL@
 
+# Machine-dependent subdirectories
+MACHDEP=	@MACHDEP@
+
 # Install prefixes are treated specially by the configure script:
 # it only changes these lines if it has received a --prefix=... or
 # --exec-prefix=... command line option.  Note that $(prefix) is
@@ -42,6 +45,13 @@ prefix=		/usr/local
 # Install prefix for architecture-dependent files
 exec_prefix=	$(prefix)
 
+# Symbols used for using shared libraries
+SO=		@SO@
+LDSHARED=	@LDSHARED@
+CCSHARED=	@CCSHARED@
+LINKFORSHARED=	@LINKFORSHARED@
+DESTSHARED=	$(prefix)/lib/python/$(MACHDEP)
+
 # Programs
 SHELL=		/bin/sh
 
@@ -132,6 +142,17 @@ libainstall:	all
 		$(INSTALL) config.h $(LIBPL)/config.h
 		$(INSTALL) $(srcdir)/Python/frozenmain.c $(LIBPL)/frozenmain.c
 
+# install the dynamically loadable modules
+sharedinstall:
+		cd Modules; $(MAKE) \
+			OPT="$(OPT)" \
+			SO="$(SO)" \
+			LDSHARED="$(LDSHARED)" \
+			CCSHARED="$(CCSHARED)" \
+			LINKFORSHARED="$(LINKFORSHARED)" \
+			DESTSHARED="$(DESTSHARED)" \
+			sharedinstall
+
 # Build the sub-Makefiles
 Makefiles:	config.status
 		(cd Modules; $(MAKE) -f Makefile.pre Makefile)

configure.in

-dnl Process this file with autoconf 1.8 or later to produce a configure script.
+dnl Process this file with autoconf 1.8 or later to make a configure script.
 AC_REVISION($Revision$)dnl
-AC_PREREQ(1.8)dnl
+AC_PREREQ(1.11)dnl
 AC_INIT(Include/object.h)
 AC_CONFIG_HEADER(config.h)dnl
 # Don't suppress compiler output when --verbose is specified
@@ -59,6 +59,69 @@ AC_RETSIGTYPE
 AC_SIZE_T
 AC_UID_T
 
+# Set name for machine-dependent library files
+AC_SUBST(MACHDEP)
+if test -z "$MACHDEP"
+then
+	ac_system=`uname -s | tr '[[A-Z]]' '[[a-z]]'`
+	ac_release=`uname -r | sed 's/\..*//'`
+	MACHDEP="$ac_system$ac_release"
+	case MACHDEP in
+	'')	MACHDEP=unknown;;
+	esac
+	AC_VERBOSE(setting MACHDEP to '$MACHDEP')
+fi
+
+# Set info about shared libraries.
+# XXX This should try things out instead of testing uname!
+AC_SUBST(SO)
+AC_SUBST(LDSHARED)
+AC_SUBST(CCSHARED)
+AC_SUBST(LINKFORSHARED)
+ac_system=`uname -s`
+ac_release=`uname -r`
+# SO is the extension of shared libraries `(including the dot!)
+# -- usually .so, .sl on HP-UX
+if test -z "$SO"
+then
+	case $ac_system in
+	hp*|HP*) SO=.sl;;
+	*)	SO=.so;;
+	esac
+	AC_VERBOSE(setting SO to '$SO')
+fi
+# LDSHARED is the ld *command* used to create shared library
+# -- "ld" on SunOS 4.x.x, "ld -G" on SunOS 5.x, "ld -shared" on IRIX 5
+if test -z "$LDSHARED"
+then
+	case $ac_system/$ac_release in
+	IRIX*) LDSHARED="ld -shared";;
+	SunOS/4*) LDSHARED="ld";;
+	SunOS/5*) LDSHARED="ld -G";;
+	hp*|HP*) LDSHARED="ld -b";;
+	*)	LDSHARED="ld";;
+	esac
+	AC_VERBOSE(setting LDSHARED= to '$LDSHARED')
+fi
+# CCSHARED are the C *flags* used to create objects to go into a shared
+# library -- this is only needed for HP-UX
+if test -z "$CCSHARED"
+then
+	case $ac_system in
+	hp*|HP*) CCSHARED="+z";;
+	esac
+	AC_VERBOSE(setting CCSHARED= to '$CCSHARED')
+fi
+# LINKFORSHARED are the flags passed to the $(CC) command that links
+# the python executable -- this is only needed for HP-UX
+if test -z "$LINKFORSHARED"
+then
+	case $ac_system in
+	hp*|HP*) LINKFORSHARED="-Wl,-E";;
+	esac
+	AC_VERBOSE(setting LINKFORSHARED to '$LINKFORSHARED')
+fi
+
 # checks for libraries
 AC_HAVE_LIBRARY(dl)
 
@@ -151,7 +214,7 @@ AC_CHAR_UNSIGNED
 
 AC_CONST
 
-AC_COMPILE_CHECK([wheter we have signed char], [], [signed char c;], [], AC_DEFINE(signed, []))
+AC_COMPILE_CHECK([signed char], [], [signed char c;], [], AC_DEFINE(signed, []))
 
 AC_CHECKING(for prototypes)
 AC_TEST_PROGRAM([