bugAVR C Runtime Library - Bugs: bug #44574, Place device-specific libraries in...

 
 

bug #44574: Place device-specific libraries in their multilib directory.

Submitted by:  Georg-Johann Lay <gjlayde>
Submitted on:  Wed 18 Mar 2015 07:10:31 PM UTC  
 
Category:  Library Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Build system
Status:  Fixed Percent Complete:  0%
Assigned to:  Pitchumani <pitchumani> Open/Closed:  Open
Release:  1.8.0 Fixed Release:  None

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Wed 15 Apr 2015 10:00:21 AM UTC, comment #2:
Pitchumani <pitchumani>
Project MemberIn charge of this item.
Mon 13 Apr 2015 12:47:36 PM UTC, comment #1:

Attached patch to changes the startup object and device specific libraries name.
Also place them into multilib (architecture) location.
Startup object file name: crt<device>.o
Device specific lib name: lib<device>.a

Old startup object file name (e.g. crtm1280.o) is not removed from the device list yet.
This may be required when we make avr-libc compile-able with older gcc version.

ChangeLog

2015-04-13  Pitchumani Sivanupandi <pitchumani.s@atmel.com>

        bug #44574: Place device-specific libraries in their multilib directory.
        * configure.ac (AC_CONFIG_FILES): Replace dev directory with architecture
        directory where device specific lib (lib<device>.a) and startup object
        file (crt<device>.o) to be installed.
        * devtools/Devices.am (avr_LIBRARIES): Change device library name to
        lib<device>.a.
        * devtools/gen-avr-lib-tree.sh (AVR12_DEV_INFO): Remove tiny stack devices
        as they are part of AVR12TS_DEV_INFO.
        (AVR25_DEV_INFO): Ditto.
        Change startup object file name to crt<device>.o and install location to
        multilib (architecture) directory.

(file #33665)

Pitchumani <pitchumani>
Project MemberIn charge of this item.
Wed 18 Mar 2015 07:10:31 PM UTC, original submission:

The current naming scheme for device-specific libraries

dev/<DEVICE>/libdev.a

bears the problem that it won't work if the install path contains spaces (as not uncommon under MS windows).

This is actually not an avr-libc problem but a problem with avr-gcc.  However, the new device-specific spec files have very limited means to handle paths containing spaces.

Wrapping the path in a space-escaping spec function does not work because that would require more than one level of escaping (which is not possible because the escape character would become a part of the path name).

One approach to make avr-gcc 5.0 + avr-libc work with paths containing spaces is renaming the device library to

lib<DEVICE>.a

and installing it in its multilib directory, i.e. in the multilib subdirectory as reported by

$ avr-gcc -mmcu=<DEVICE> [options] -print-multi-directory

For devices not natively supported by avr-gcc, avr-libc would have to know the correct multilib subdir.

Rationale is that multilib subdirs are common library search paths.  Hence the device library could then be specified as

-l<DEVICE>

and thus without explicit absolute path which works as expected.

Georg-Johann Lay <gjlayde>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:
   
   
Comment:
   

Attached Files
file #33665:  move-crt-lib-to-multilib-location.patch added by pitchumani (23KiB - application/octet-stream)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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  • -email is unavailable- added by pitchumani (Updated the item)
  • -email is unavailable- added by gjlayde (Submitted the item)
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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-04-15 pitchumani StatusReady For Test => Fixed
    2015-04-13 pitchumani Attached File- => Added move-crt-lib-to-multilib-location.patch, #33665
        StatusNone => Ready For Test
    2015-04-10 pitchumani Assigned toNone => pitchumani

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