SHMLBA is now defined by arch dependent bits/shm.h file so remove

[uclinux-h8/uClibc.git] / TODO

diff --git a/TODO b/TODO
index 11186eb..e9b4511 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,27 +1,86 @@
-*) Fix ldd to not multiply list libs
-*) Check cris architecture
-
-Erik's TODO list for the next release:
-
-    *) When options are disabled, also disable them in the
-       include files as well.
-    *) Make all configured out symbols optionally add a linker warning saying
-       "Hey!  You are trying to use a function that you have configured out.  
-       If you really want to use this function, enable CONFIG_FOO and rebuild
-       uClibc".
+TODO list for the uClibc 0.9.28 release:
+-------------------------------------------------
+    *) Audit header files.  Remove prototypes for all functions that
+       are not supported -- especially needed for the libm headers.
+    *) Audit header files.  When options are disabled, also disable
+       them in the include files as well by checking for the proper
+       define from include/bits/uClibc_config.h (pulled in from features.h)
+    *) Test each architecture with the latest LTP testsuite, and post
+       LTP testsuite results for each architecture on uclibc.org.
+
+
+TODO list for the uClibc 1.0.0 release:
+-------------------------------------------------
+
+    *) Hide uClibc internal symbols from our exported namespace.
+    *) Explicity add some sortof CONFIG_LINUX_2_2_ABI, CONFIG_LINUX_2_4_ABI
+       and CONFIG_LINUX_2_6_ABI type options, rather than having the abi
+       depend on the selected set of kernel headers.  This will likely also
+       require that we provide a set of kernel headers (probably a derivitive
+       of Mazur's linux-libc-headers) that can supplies the 2.2, 2.4, and 2.6
+       kernel abi.
+    *) Documentation updates:
+           *) Write a uClibc HOWTO document
+           *) Update README document
+           *) Update INSTALL document
+           *) Update docs/Glibc_vs_uClibc_Differences.txt document
+               and fully document all differences between the feature
+               set of uClibc and glibc.
+           *) Update docs/uClibc_vs_SuSv3.txt document
+           *) Update docs/threads.txt document
+           *) Write man pages for ldd and ldconfig utility binaries
+    *) Implement some mechanism (perhaps encoded in the .so name,
+       perhaps using an abi tag magically embedded into each object)
+       for flagging config options that break the ABI.  Options
+       such as UCLIBC_HAS_SOFT_FLOAT, UCLIBC_HAS_THREADS, UCLIBC_HAS_LOCALE,
+       and perhaps others (finalize list) produce a lib with a differing
+       ABI.  Make it so apps cannot use an ABI mis-matched uClibc.
+       This is most easily done using symbol versioning...
+    *) Implement the long double versions of math funcs
+       using wrappers on top of the double versions (size / precision
+       trade off where size clearly wins).

     *) Make all small objects (>~50 bytes) into either inlines or
        into a static library
     *) Make all small objects (>~50 bytes) into either inlines or
        into a static library

-    *) Document all differences between the feature set of uClibc 
-       and glibc.
+    *) Cleanup / rewrite sysconf.c.  It should get some information
+       from ldso (such as HZ).  Other stuff it currently just makes
+       up, which is obviously wrong.  Also bits/uClibc_clk_tck.h
+       needs to be updated at the same time to get proper HZ values.
+    *)  It would nice if valgrind wouldn't complain about the atexit() malloc'd
+       memory for destructors, which happens since the dynamic linker calls
+       atexit(), which calls malloc() prior to valgrind starting, so valgrind
+       complains because it didn't see that memory allocated.
+    *) poll emulation using select() for old 2.0.x uClinux kernels
+       in libc/sysdeps/linux/common/poll.c fails some python self-tests.
+       Of course, modern systems using the actuall poll() syscall work fine.
+    *) Rework the build system Makefile to eliminate recursive make.
+    *) Build both pic and non-pic objects where appropriate, so that
+       static libs need not pay the pic size penalty.
+    *) Cleanup/scrub all the Makefile copyright junk
+    *) Fix dlopen, for both static and dynamic cases, and make it
+       fully comply with SuSv3
+    *) From the the ELF spec "...All shared object initializations happen
+       before the executable file gains control.  ...  Before the initialization
+       code for any object A is called, the initialization code for any other
+       objects that object A depends on are called.  For these purposes, an object
+       A depends on another object B, if B appears in Ads list of needed objects
+       (recorded in the DT_NEEDED entries of the dynamic structure). The order of
+       initialization for circular dependencies is undefined."  uClibc's shared
+       lib loader should be fixed to run ctors in the specified order.
+
+
+TODO list for AFTER the uClibc 1.0.0 release:
+-------------------------------------------------
+    *) Add support for Linux 2.6.x NPTL pthreads, futexes, etc
+    *) Add support for Linux 2.6.x fast vsyscalls
+    *) Enable pristine source tree builds

     *) Fix regex so it isn't so stinking big
     *) Fix glob so it isn't so stinking big
     *) Fix regex so it isn't so stinking big
     *) Fix glob so it isn't so stinking big

-    *)  Fix the dlopen() bug with handling of symbols that are already
-       resolved.  Seems if it is already resolved it ignores them rather than
-       resolving the new symbol and overriding.
-    *) Adapt uClibc to use Linux 2.5.x pthreads
-    *) Remove all use of kernel headers (i.e. copy the needed bits
-       to completely specify the per-arch kernel ABI).
-    *) Fix x86 profiling.  It currently only works when static + PIC...
+    *) run 'nm -D --size-sort -t d libuClibc-0.9.26.so' and work on the
+       biggest things (i.e. stuff at the end of the list) to make
+       them smaller.
+    <more wishlist items here>
+
+

 
 
 -----------------------------------------------------------------------------
 
 
 -----------------------------------------------------------------------------


@@ -36,7 +95,7 @@ Manuel's todo:
   d) Implement glibc 'a' flag for scanf string conversions.
   e) Allow use of the older non-table-based ctype functions when using
      stub locale support. (smaller)
   d) Implement glibc 'a' flag for scanf string conversions.
   e) Allow use of the older non-table-based ctype functions when using
      stub locale support. (smaller)

-  
+

   2) Additional str{f|p}time issues.
   ----------------------------------
   a) Spacing issue wrt strptime.
   2) Additional str{f|p}time issues.
   ----------------------------------
   a) Spacing issue wrt strptime.


@@ -44,7 +103,7 @@ Manuel's todo:
   c) Support locale era in year designations.   (data is in place)
   d) Deal with mb format string issues in strftime.
   e) Implement wcsftime.
   c) Support locale era in year designations.   (data is in place)
   d) Deal with mb format string issues in strftime.
   e) Implement wcsftime.

-  
+

   3) Other locale issues (my implementation):
   -------------------------------------------
   a) Do a little more clean up of ctype and wctype.
   3) Other locale issues (my implementation):
   -------------------------------------------
   a) Do a little more clean up of ctype and wctype.


@@ -65,37 +124,3 @@ Manuel's todo:
   b) Write a space-efficient gettext substitute, to avoid storing large amounts
      of redundant data.
 
   b) Write a space-efficient gettext substitute, to avoid storing large amounts
      of redundant data.
 

-
-Other stuff:
-
-Move the target-specific sysconf.c generator to extra (as it needs to be
-       run on the target) and fix libc/unistd/Makefile.
-
------------------------------------------------------------------------------
-ds's list:
-
-Search for string literals that are not in the .rodata section.  (Varies
-by architecture and gcc version.)
-
-man pages for binaries
-
-check compiling without FP support -- are FP instructions still generated?
-Needs a uClibc_config.h entry dependent on HAS_FLOATING_POINT.
-
-Why does ld.so search /usr/powerpc-uclibc/lib before LD_LIBRARY_PATH?
-
------------------------------------------------------------------------------
-
-Any takers?
-
-*) Documentation
-       - List all differences between the feature set of uClibc and glibc.
-*) run 'nm -D --size-sort -t d libuClibc-0.9.5.so' and work on the biggest things 
-       (i.e. stuff at the end of the list) to make them smaller.
-*) make inb/outb work for all arches.  This is complete for i386 and arm.  
-       Other archs like powerpc, still need fixing.
-
------------------------------------------------------------------------------
-
-
-