Merge alpha100 branch back to main trunk

Makefile.in

-MAKE=		make
+########################################################################
+# Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
+# Amsterdam, The Netherlands.
+# 
+#                         All Rights Reserved
+# 
+# Permission to use, copy, modify, and distribute this software and its 
+# documentation for any purpose and without fee is hereby granted, 
+# provided that the above copyright notice appear in all copies and that
+# both that copyright notice and this permission notice appear in 
+# supporting documentation, and that the names of Stichting Mathematisch
+# Centrum or CWI not be used in advertising or publicity pertaining to
+# distribution of the software without specific, written prior permission.
+# 
+# STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+########################################################################
 
-SUBDIRS=	Parser Grammar Objects Python
-SUBDIRSTOO=	Include Extensions readline
-DISTFILES=	README Makefile configure configure.in
-DIST=		$(DISTFILES) $(SUBDIRS) $(SUBDIRSTOO)
+# Toplevel Makefile for Python
+# Note -- if recursive makes fail, try adding MAKE=make
 
-all:		config.status
+# Substitutions by configure
+srcdir=		@srcdir@
+VPATH=		@srcdir@
+INSTALL=	@INSTALL@
+
+# 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, or if it has figured out
+# a value by searching for python in $PATH.  Note that $(prefix) is
+# also used when compiling config.c in Modules to set the default
+# module search path, so if you change it later be sure to change it
+# there too and rebuild.
+
+# Install prefix for architecture-independent files
+prefix=		/usr/local
+
+# Install prefix for architecture-dependent files
+exec_prefix=	$(prefix)
+
+# Programs
+SHELL=		/bin/sh
+
+# --with-PACKAGE options for configure script
+# e.g. --with-readline --with-svr5 --with-solaris --with-thread
+# (see README for an explanation)
+WITH=		
+
+# Compiler options passed to subordinate makes
+OPT=		-O
+
+# Subdirectories where to run make recursively
+SUBDIRS=	Parser Objects Python Modules
+
+# Other subdirectories
+SUBDIRSTOO=	Include Lib Doc Misc Demo readline Grammar
+
+# Files and directories to be distributed
+CONFIGFILES=	configure configure.in acconfig.h config.h.in Makefile.in
+DISTFILES=	README ChangeLog $(CONFIGFILES)
+DISTDIRS=	$(SUBDIRS) $(SUBDIRSTOO) Ext-dummy
+DIST=		$(DISTFILES) $(DISTDIRS)
+
+# Default target
+all:		python
+
+# Build the interpreter
+python:		Makefiles
+		for i in $(SUBDIRS); do \
+			(echo $$i; cd $$i; $(MAKE) OPT="$(OPT)" all); \
+		done
+
+# Test the interpreter (twice, once without .pyc files, once with)
+TESTPATH=	$(srcdir)/Lib:$(srcdir)/Lib/test
+test:		python
+		-rm -f $(srcdir)/Lib/test/*.pyc
+		PYTHONPATH=$(TESTPATH) ./python -c 'import autotest'
+		PYTHONPATH=$(TESTPATH) ./python -c 'import autotest'
+
+# Install the interpreter
+install:	python
+		$(INSTALL) python $(exec_prefix)/bin/python
+		@echo If this is your first time, consider make libinstall...
+
+# Install the library.
+# If your system does not support "cp -r", try "copy -r" or perhaps
+# something like find Lib -print | cpio -pacvdmu $(DESTDIR)/lib/python
+libinstall:
+		-if test ! -d $(prefix)/lib/python; \
+		then mkdir $(prefix)/lib/python; \
+		fi
+		cp -r $(srcdir)/Lib/* $(prefix)/lib/python
+		@echo Ideally, run something to compile all modules now...
+
+# install the manual page
+maninstall:
+		$(INSTALL) $(srcdir)/Misc/python.man \
+			$(prefix)/man/man1/python.1
+
+# install the include files
+INCLUDEPY=	$(prefix)/include/Py
+inclinstall:
+		-if test ! -d $(INCLUDEPY); \
+		then mkdir $(INCLUDEPY); \
+		fi
+		cp $(srcdir)/Include/*.h $(INCLUDEPY)
+
+# install the lib*.a files and miscellaneous stuff needed by extensions
+LIBP=		$(exec_prefix)/lib/python
+LIBPL=		$(LIBP)/lib
+libainstall:	all
+		-if test ! -d $(LIBP); \
+		then mkdir $(LIBP); \
+		fi
+		-if test ! -d $(LIBPL); \
+		then mkdir $(LIBPL); \
+		fi
 		for i in $(SUBDIRS); do \
-			(echo $$i; cd $$i; $(MAKE) all); \
+			echo $$i; $(INSTALL) $$i/lib$$i.a $(LIBPL)/lib$$i.a; \
+		done
+		$(INSTALL) Modules/config.c $(LIBPL)/config.c
+		$(INSTALL) $(srcdir)/Modules/config.c.in $(LIBPL)/config.c.in
+		$(INSTALL) Modules/Makefile $(LIBPL)/Makefile
+		$(INSTALL) Modules/Setup $(LIBPL)/Setup
+		$(INSTALL) $(srcdir)/Modules/makesetup $(LIBPL)/makesetup
+		$(INSTALL) config.h $(LIBPL)/config.h
+		$(INSTALL) $(srcdir)/Python/frozenmain.c $(LIBPL)/frozenmain.c
+
+# Build the sub-Makefiles
+Makefiles:	config.status
+		(cd Modules; $(MAKE) -f Makefile.pre Makefile)
+		for i in . $(SUBDIRS); do \
+			(echo $$i; cd $$i; $(MAKE) Makefile); \
 		done
 
-tags:		ctags -t Parser/*.[ch] Objects/*.[ch] Python/*.[ch] Include/*.h
+# Build the toplevel Makefile
+Makefile:	Makefile.in config.status
+		CONFIG_FILES=Makefile CONFIG_HEADERS= $(SHELL) config.status
+
+# Run the configure script.  If config.status already exists,
+# call it with the --recheck argument, which reruns configure with the
+# same options as it was run last time; otherwise run the configure
+# script with options taken from the $(WITH) variable
+config.status:	$(srcdir)/configure
+		if test -f config.status; \
+		then $(SHELL) config.status --recheck; \
+		else $(SHELL) $(srcdir)/configure $(WITH); \
+		fi
+
+.PRECIOUS:	config.status python
 
-TAGS:		etags -t Parser/*.[ch] Objects/*.[ch] Python/*.[ch] Include/*.h
+# Rerun configure with the same options as it was run last time,
+# provided the config.status script exists
+recheck:
+		$(SHELL) config.status --recheck
 
+# Rebuild the configure script from configure.in; also rebuild config.h.in
+autoconf:
+		(cd $(srcdir); autoconf; autoheader)
+
+# Create a tags file for vi
+tags::
+		ctags -w -t Include/*.h
+		for i in $(SUBDIRS); do ctags -w -t -a $$i/*.[ch]; done
+		sort tags -o tags
+
+# Create a tags file for GNU Emacs
+TAGS::
+		etags -t Include/*.h
+		for i in $(SUBDIRS); do etags -t -a $$i/*.[ch]; done
+
+# Add dependencies to sub-Makefiles
 depend:
 		for i in $(SUBDIRS); do \
 			(echo $$i; cd $$i; $(MAKE) depend); \
 		done
 
+# Sanitation targets -- clean leaves libraries, executables and tags
+# files, which clobber removes those as well
+
 localclean:
 		-rm -f core *~ [@,#]* *.old *.orig *.rej
-		-(cd Include; rm -f core *~ [@,#]* *.old *.orig *.rej)
 
 clean:		localclean
 		-for i in $(SUBDIRS); do \
-			(echo $$i; cd $$i; $(MAKE) clean); \
+			(echo $$i; cd $$i; \
+			 if test -f Makefile; \
+			 then $(MAKE) clean; \
+			 else $(MAKE) -f Makefile.*in clean; \
+			 fi); \
 		done
 
 localclobber:	localclean
-		-rm -f tags TAGS config.status
+		-rm -f tags TAGS python
 
 clobber:	localclobber
 		-for i in $(SUBDIRS); do \
-			(echo $$i; cd $$i; $(MAKE) clobber); \
+			(echo $$i; cd $$i; \
+			 if test -f Makefile; \
+			 then $(MAKE) clobber; \
+			 else $(MAKE) -f Makefile.in clobber; \
+			 fi); \
 		done
 
+# Make things extra clean, before making a distribution
 distclean:	clobber
-		-for i in $(SUBDIRS); do \
-			if test -f $$i/Makefile.in; then \
-				rm -f $$i/Makefile; \
-			fi; \
+		-$(MAKE) SUBDIRS="$(SUBDIRSTOO)" clobber
+		-rm -f config.status config.h Makefile
+		-for i in $(SUBDIRS) $(SUBDIRSTOO); do \
+			 for f in $$i/*.in; do \
+				f=`basename "$$f" .in`; \
+			 	if test "$$f" != "*"; then \
+					echo rm -f "$$i/$$f"; \
+				 	rm -f "$$i/$$f"; \
+				fi; \
+			 done; \
 		done
 
-Makefiles:	config.status
-		./config.status
-
-config.status:	configure
-		./configure
-
-configure:	configure.in
-		autoconf
- 
-tar:		dist.tar.Z
+# Find files with funny names
+find:
+		find $(DISTDIRS) -type d \
+			-o -name '*.[chs]' \
+			-o -name '*.py' \
+			-o -name '*.doc' \
+			-o -name '*.sty' \
+			-o -name '*.bib' \
+			-o -name '*.dat' \
+			-o -name '*.el' \
+			-o -name '*.fd' \
+			-o -name '*.in' \
+			-o -name '*.tex' \
+			-o -name '*,[vpt]' \
+			-o -name 'Setup' \
+			-o -name 'Setup.*' \
+			-o -name README \
+			-o -name Makefile \
+			-o -name ChangeLog \
+			-o -name RCS \
+			-o -name Repository \
+			-o -name Entries \
+			-o -name Tag \
+			-o -name tags \
+			-o -name TAGS \
+			-o -name .cvsignore \
+			-o -name MANIFEST \
+			-o -print
 
-dist.tar.Z:	$(DIST)
+# Build a distribution tar file (run make distclean first)
+# (This leaves the RCS and CVS directories in :-( )
+tar:
 		tar cf - $(DIST) | compress >dist.tar.Z

TODO

-CVS committal...
-renaming project?  (promised but not even started yet!)
-better way to specify PYTHONPATH
-improve 'install' targets in toplevel Makefile
-Add Demo directory again
-Add NEWS and HISTORY to Misc directory
-fix compilation warnings
-non-Sun dynamic linking (SGI 4 dl, and dl-dld elsewhere)
-put some stuff into Contrib dir
-make freeze script working again (use Extensions/mkext.py as a base?)
-write porting guide
-update documentation (especially ext.tex!)
-test set?
-.
-.
-.
-release!
+(*) int*int overflow check shouldn't doubles on alpha (cf. John Tromp's mail)
+
+(*) add signal.alarm()
+
+(*) when abort()ing because of unexpected exception, print a message
+    first (Jack)
+
+----------------------------------------------------------------------
+(from BUGS1.0.1)
+----------------------------------------------------------------------
+document addpack, urllib, ...
+
+(*) import.c from JaapV
+
+document os.exec*
+
+name sunaudiodevmodule.c is too long
+
+(*) play with / include SUIT interface
+
+make regsub.[g]sub() optionally case insensitive
+
+handle printing of errors in lines containing multiline strings
+
+======================================================================
+
+(*) ought to use features from autoconf 1.8
+
+(*) errors in __repr__() are handled wrong when called from format
+
+- long(0x80000000) has wrong value!
+
+- hex(0x80000000) shouldn't have sign (?)
+
+(*) need way to set buffering at file open time
+
+(*) need way to force stdout unbuffered
+
+- document new modules (builtin as well as Lib)
+
+- restart CVS tree
+
+(?) build shared libs for SunOS 4.1.3
+
+- Mac X... code resources as shared libs?
+
+(*) X patches from Adrian Phillips
+
+(*) Jaap's freeze script
+
+Incorporate with contrib status:
+- additions to glmodule by rg3h
+(*) Jaap's posixfile module (with locking)
+(*) pthreads interface
+
+Later:
+- put the offending object in IOError and posix.error
+- make module marshal work with user-defined file-like objects
+- built-in help?
+- hierarchical module names?
+
+Big plans:
+
+- allow separate interpreters (a la Xt's Applocation Contexts, and Tcl)
+- great renaming
+- complete reflexive nature of the language, e.g. have interfaces et
+create any kind of object
+(*) GUI interface a la Tk
+
+
+======================================================================
+For FAQ:
+
+(*) why don't strings (numbers, tuples, ...) have methods / attributes
+
+(*) why are strings / numbers / tuples immutable
+
+why don't list methods return self
+
+======================================================================
+PM/TODO list after Egypt (from mailing list):
+
+make .pyc files executable (how?)
+
+thread status and improvements (lock stmt; signal/wait)
+
+optional optimizations
+
+pthread migration
+
+(*) test/incorporate new SUIT
+
+shorten excessively long filenames (sunaudiodevmodule.c)
+
+(*) default parameter values
+
+multiple interpreter objects
+
+(*) import shlib bug (irix5.2) (reload, dlclose)
+
+(*) addpack.py
+
+(*) newmodule.c (or other hacks to create new modules, classes, functions
+    etc. from their components)
+
+persistency
+
+new Dbhash.py, dbhash library
+
+reraise; or raise 3rd param for traceback?
+-or- except type, value, tbackobjec
+
+redesign exceptions from scratch?
+
+dbm objects miss items(), values() methods
+
+(*) jar's new profile
+
+answer q about coerce()
+
+(*) reconsider pass [expression] ??? -or- don't print non-interactive
+    exprs -or- option to suppress printing non-None expressions
+
+(*) should be able to hash code objs (add fns to convert between lists/tuples)
+
+describe() ?
+
+distribute demo2 with Holmes
+
+(*) re-reply on try-continue
+
+classes are too slow
+
+add += etc. ?
+
+optimize tuple = tuple
+
+allow (a, b) = [1, 2] and [1, 2] = (1, 2) ???
+
+wustl is not un the northwest of the US?
+
+(*) MPW doesn't like \000 in string literals?
+
+MPW patches, unixemu patches
+
+prepare tar files with
+	- mac think projects (*)
+	- mpw makefiles
+	- dos makefiles
+	- mac unixemu lib
+
+explain rules about == vs. 'is' for strings (* by others on the list)
+
+(*) bug in ceval.c DELETE_FAST
+
+(*) possible optimize LOAD_NAME -> LOAD_GLOBAL
+
+get dos python with suit (inesc)
+
+(*) docs for try/continue are wrong and unclear
+
+better hashing fn?
+
+(*) add improved nested indent to python-mode.el
+
+(*) add a section to tutorial on "new" features
+
+rewrite section on formatting in tutorial
+
+======================================================================
+TODO-TOO list:
+
+test for overflow when converting python long to float
+
+lift restrictions on tuple or list in many cases
+
+(*) allow long ints with sensible values for getargs "i"
+
+(*) multiline string literals
+
+what to do about 64-bit int literals (on 64-bit machines) in .pyc
+files?  (Currently truncated w/o warning!)
+
+DOCUMENTATION UPDATE!  E.g. ref.tex doesn't describe:
+(*)	- line joins w/o backslash
+(*)	- double-quoted strings; \" in strings
+	- more?
+Should double-check all changes with docs!
+
+(?) Interrupting output still sometimes doesn't call clearerr() properly
+
+sometimes ghost errors when interrupting during debugging in
+'continue' mode?
+
+typing a comment to a primary prompt shouldn't issue a secondary prompt
+
+readline: add hooks to recognize Python syntax and to expand Python
+commands and names
+
+should have absolute pathnames in function objects
+
+in general check that all the exceptions are modernized and that the
+messages aren't giving the same error twice (e.g., stdwinmodule.c!)
+
+- check read/write allowed for file objects
+
+- introduce macros to set/inspect errno for syscalls, to support things
+  like getoserr()
+
+======================================================================
+DOS/Windows Python
+
+(???) command line options?
+
+(*) os.system()
+
+(???) interrupts
+
+(???) wrap
+
+(*) pc module
+
+(*) dospath.py
+
+DOS/Windows Python -- TO DO
+
+(*) memtest from config.h
+
+(*) copy sources back
+
+(*) build DOS version
+
+(*) distribute 386 version
+
+(*) Mac 1.0.1 release?
+======================================================================

configure.in

-dnl Process this file with autoconf to produce a configure script.
-
+dnl Process this file with autoconf 1.8 or later to produce a configure script.
+AC_REVISION($Revision$)dnl
+AC_PREREQ(1.8)dnl
 AC_INIT(Include/object.h)
+AC_PREFIX(python)
+AC_CONFIG_HEADER(config.h)dnl
+# Don't suppress compiler output when --verbose is specified
+test -n "$verbose" &&
+	ac_compile=`echo "$ac_compile" | sed "s|>/dev/null 2>&1||"`
+AC_VERBOSE(setting ac_compile to '$ac_compile')
 
 # checks for alternative programs
+AC_CHECKING(for --with(out)-gcc)
+AC_WITH(gcc, [
+	case $withval in
+	no)	withval=cc;;
+	yes)	withval=gcc;;
+	esac
+	CC=$withval])
 AC_PROG_CC
+AC_PROG_INSTALL
 AC_PROG_RANLIB
+AC_SUBST(AR)
+AC_PROGRAMS_CHECK(AR, ar aal, ar)
 
 # checks for UNIX variants that set C preprocessor variables
 AC_AIX
@@ -12,14 +29,21 @@ AC_ISC_POSIX
 AC_MINIX
 dnl DYNIX test runs compile so must be last
 AC_DYNIX_SEQ
+AC_CHECKING(for NeXT)
+AC_TEST_PROGRAM([
+#ifdef _NEXT_SOURCE
+main() { exit(0); }
+#endif
+], AC_DEFINE(_POSIX_SOURCE))
 
 # checks for header files
 AC_STDC_HEADERS
-AC_HAVE_HEADERS(dlfcn.h signal.h stdarg.h unistd.h utime.h sys/param.h sys/select.h sys/times.h sys/utsname.h)
+AC_HAVE_HEADERS(dlfcn.h fcntl.h limits.h signal.h stdarg.h stdlib.h thread.h unistd.h utime.h sys/audioio.h sys/param.h sys/select.h sys/time.h sys/times.h sys/un.h sys/utsname.h)
 AC_DIR_HEADER
 
 # checks for typedefs
-AC_GETGROUPS_T
+AC_CHECKING(for clock_t in time.h)
+AC_HEADER_EGREP(clock_t, time.h, , AC_DEFINE(clock_t, long))
 AC_MODE_T
 AC_OFF_T
 AC_PID_T
@@ -29,43 +53,124 @@ AC_UID_T
 
 # checks for libraries
 AC_HAVE_LIBRARY(dl)
-LIBS="${LIBS} -L${READLINESRC-${PWD-${CWD-`pwd`}}/readline}"
-AC_HAVE_LIBRARY(readline)
-if test -n "${have_lib}"; then
-AC_HAVE_LIBRARY(termcap)
+
+AC_CHECKING(for --with-svr4)
+AC_WITH(svr4, [
+AC_HAVE_LIBRARY(socket)
+AC_HAVE_LIBRARY(inet)
+AC_HAVE_LIBRARY(nsl)
+])
+
+AC_CHECKING(for --with-readline)
+AC_WITH(readline, [AC_DEFINE(WITH_READLINE)
+if test -d "$withval"
+then LIBS="$LIBS -L$withval"
+else AC_ERROR(proper usage is --with-readline=DIRECTORY)
 fi
+termcap=
+AC_HAVE_LIBRARY(termcap, [termcap=termcap], [AC_HAVE_LIBRARY(termlib, [termcap=termlib])])
+if test ! -z "$termcap"
+then LIBS="$LIBS -lreadline"
+     # Avoid possible conflict between shared libraries termcap and gl
+     # on IRIX 5: both contain a routine called clear.
+     if test -f /usr/lib/lib$termcap.a
+     then LIBS="$LIBS /usr/lib/lib$termcap.a"
+     else LIBS="$LIBS -l$termcap"
+     fi
+else AC_ERROR(no working termcap/termlib, do not use --with-readline)
+fi])
 
-# Check for IRIX or SOLARIS thread interface
-AC_HAVE_LIBRARY(mpc)
-if test -n "${have_lib}"; then
-DEFS="${DEFS} -DUSE_THREAD"
-LIBOBJS="${LIBOBJS} thread.o"
+AC_CHECKING(for --with-thread)
+AC_WITH(thread, [
+if test -d "$withval"
+then LIBS="$LIBS -L$withval"
 fi
+AC_HAVE_LIBRARY(pthreads, [AC_DEFINE(WITH_THREAD)
+AC_DEFINE(_POSIX_THREADS)
+LIBS="$LIBS -lpthreads"
+LIBOBJS="$LIBOBJS thread.o"])
+AC_HAVE_LIBRARY(mpc, [AC_DEFINE(WITH_THREAD)
+LIBS="$LIBS -lmpc"
+LIBOBJS="$LIBOBJS thread.o"])
+AC_HAVE_LIBRARY(thread, [AC_DEFINE(WITH_THREAD)
+LIBS="$LIBS -lthread"
+LIBOBJS="$LIBOBJS thread.o"])
+])
+
+# -I${DLINCLDIR} is added to the compile rule for import.o
+AC_SUBST(DLINCLDIR)
+DLINCLDIR=/
 
-AC_HAVE_LIBRARY(thread)
-if test -n "${have_lib}"; then
-DEFS="${DEFS} -DUSE_THREAD"
-LIBOBJS="${LIBOBJS} thread.o"
+AC_CHECKING(for --with-sgi-dl)
+AC_WITH(sgi-dl, [AC_DEFINE(WITH_SGI_DL)
+dldir=$withval
+if test -d "$dldir"
+then LIBS="$LIBS -L$dldir"
+else AC_ERROR(proper usage is --with-sgi-dl=DIRECTORY)
 fi
+DLINCLDIR=${dldir}
+LIBS="$LIBS -ldl -lmld"])
+
+AC_CHECKING(for --with-dl-dld)
+AC_WITH(dl-dld, [AC_DEFINE(WITH_DL_DLD)
+dldir=`echo "$withval" | sed 's/,.*//'`
+dlddir=`echo "$withval" | sed 's/.*,//'`
+if test -d "$dldir" -a -d "$dlddir"
+then LIBS="$LIBS -L$dldir -L$dlddir"
+else AC_ERROR(proper usage is --with-dl-dld=DL_DIRECTORY,DLD_DIRECTORY)
+fi
+DLINCLDIR=${dldir}
+LIBS="$LIBS -ldl -ldld"])
 
 # checks for library functions
-AC_HAVE_FUNCS(clock ftime gettimeofday getpgrp getwd lstat readlink readline select setsid setpgid setpgrp siginterrupt symlink tcgetpgrp tcsetpgrp times uname waitpid)
-AC_REPLACE_FUNCS(dup2 getcwd strerror strtoul strtod memmove)
+AC_HAVE_FUNCS(chown clock dlopen ftime gettimeofday getpeername getpgrp getpid getwd link lstat nice readlink select setgid setuid setsid setpgid setpgrp setvbuf siginterrupt symlink tcgetpgrp tcsetpgrp times uname waitpid)
+AC_REPLACE_FUNCS(dup2 getcwd strerror memmove)
 AC_FUNC_CHECK(getpgrp, AC_COMPILE_CHECK([argument to getpgrp], [#include <unistd.h>], [getpgrp(0);], AC_DEFINE(GETPGRP_HAVE_ARG)))
 
 # checks for structures
 AC_TIME_WITH_SYS_TIME
 AC_STRUCT_TM
 AC_TIMEZONE
+AC_COMPILE_CHECK([whether we have altzone], [#include <time.h>], [return altzone;], AC_DEFINE(HAVE_ALTZONE))
+AC_COMPILE_CHECK([whether sys/select.h and sys/time.h may both be included], [
+#include <sys/types.h>
+#include <sys/select.h>
+#include <sys/time.h>
+], [;], [AC_DEFINE(SYS_SELECT_WITH_SYS_TIME)])
 
 # checks for compiler characteristics
+
+AC_CHAR_UNSIGNED
+
 AC_CONST
-echo checking for prototypes
-AC_TEST_PROGRAM([int foo(int x){return 0;} int main(){return foo(10);}], AC_DEFINE(HAVE_PROTOTYPES) have_prototypes=1)
+
+AC_COMPILE_CHECK([wheter we have signed char], [], [signed char c;], [], AC_DEFINE(signed, []))
+
+AC_CHECKING(for prototypes)
+AC_TEST_PROGRAM([
+int foo(int x) { return 0; }
+int main() { return foo(10); }
+], AC_DEFINE(HAVE_PROTOTYPES) have_prototypes=1)
+
+AC_CHECKING(for variable length prototypes and stdarg.h)
+AC_TEST_PROGRAM([
+#include <stdarg.h>
+int foo(int x, ...) { return 0; }
+int main() { return foo(10, 11, 12); }
+], AC_DEFINE(HAVE_STDARG_PROTOTYPES) have_prototypes=1)
 if test "$have_prototypes"; then
-AC_COMPILE_CHECK(["bad exec* prototypes"], [#include <unistd.h>], [char *const*t;execve("@",t,t);], , AC_DEFINE(BAD_EXEC_PROTOTYPES))
+AC_COMPILE_CHECK(["bad exec* prototypes"], [#include <unistd.h>], [char **t;execve("@",t,t);], , AC_DEFINE(BAD_EXEC_PROTOTYPES))
 fi
 
+AC_CHECKING(for bad static forward)
+AC_TEST_PROGRAM([
+struct s { int a; int b; };
+static struct s foo;
+int foobar() { return !foo.a; }
+static struct s foo = { 1, 2 };
+main() { exit(foobar()); }
+], , AC_DEFINE(BAD_STATIC_FORWARD))
+
 # checks for system services
 # (none yet)
 
@@ -73,5 +178,20 @@ fi
 AC_IRIX_SUN
 AC_XENIX_DIR
 
+# check for --with-libm=...
+AC_SUBST(LIBM)
+LIBM=-lm
+AC_WITH(libm, [if test "$withval" != yes
+then LIBM=$withval
+else AC_ERROR(proper usage is --with-libm=STRING)
+fi])
+
+# check for --with-libc=...
+AC_SUBST(LIBC)
+AC_WITH(libc, [if test "$withval" != yes
+then LIBC=$withval
+else AC_ERROR(proper usage is --with-libc=STRING)
+fi])
+
 # generate output files
-AC_OUTPUT(Objects/Makefile Parser/Makefile Python/Makefile)
+AC_OUTPUT(Makefile Objects/Makefile Parser/Makefile Python/Makefile Modules/Makefile.pre)