PLDWWW: DevelopingPLD/AdvancedDeveloping/FixingAsNeeded

[sparky]

Author: sparky   Date: Mon Aug  7 19:05:46 2006 GMT
Module: PLDWWW   URL: http://www.pld-linux.org/DevelopingPLD/AdvancedDeveloping/FixingAsNeeded
---- Log message:


---- Page affected: DevelopingPLD/AdvancedDeveloping/FixingAsNeeded

---- Diffs:

================================================================
  Most of problems are with readline/ncurses and tinfo, and it's nice
  example: tinfo is required by both readline and ncurses, and both
  are linked with this library (now, when I've
- [http://cvs.pld-linux.org/cgi-bin/cvsweb/SOURCES/readline-shared.patch?r1=1.6&r2=1.7 fixed readline];).
+ [http://cvs.pld-linux.org/cgi-bin/cvsweb/SOURCES/readline-shared.patch?r1=1.6&r2=1.7 fixed readline]).
  
  But some packages link with readline or ncurses while they use __only__
  symbols from tinfo.
@@ -287, +287 @@

  ==== What if broken library comes from other package ? ====
  
  You can check manually does library has all required symbols, simply running
- 'gcc ''library'' ', like this:
+ ' gcc ''library'' ', like this:
  
  This is an example of correctly linked library:
  {{{
@@ -298, +298 @@

  }}}
  
  
- And inclrrectly linked:
+ And inclorrectly linked one:
  {{{
  $ gcc /usr/lib64/liblftp-jobs.so.0.0.0 
  /usr/lib64/gcc/x86_64-pld-linux/4.1.2/../../../../lib64/crt1.o: In function `_start':
@@ -311, +311 @@

  }}}
  
  
+ '''Warning:''' some libraries may require to have unresolved symbols.
  
  
  === 3. unresolved symbols caused by incorrect order ===
@@ -342, +343 @@

  
  function '{{{convert_ToPilotChar}}}', may be found in passed library, but take
  a look at section about positions, arguments order is incorrect:
- libraries go before objects (conftest.c)
+ libraries go before objects (conftest.c).
- it's very common when someone puts {{{-l<>}}} in {{{LDFLAGS}}} instead of {{{LIBS}}},
+ It's very common when someone puts {{{-l<>}}} in {{{LDFLAGS}}} instead of {{{LIBS}}},
- that was the case too
+ that was the case too.
  
- just take a look at my fix:
+ Just take a look at my fix:
  
  {{{
  -	LDFLAGS_save="$LDFLAGS"
@@ -358, +359 @@

  +	LIBS="$LIBS_save"
  }}}
  
- with this simple change everything works perfectly.
+ With this simple change everything works perfectly.