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Full Discussion: undefined reference to `__ctype_b'
Top Forums Programming undefined reference to `__ctype_b' Post 302244674 by jim mcnamara on Wednesday 8th of October 2008 11:29:09 AM
Old 10-08-2008
Another thought - you may not be aware that the order of libraries linked against is important. Try moving the .a file to the first element in the -l list.

Also, you may need to put something like the std c++ library as the last in that list - in other words some standard shared libraries may need to be parsed for symbols more than once.

What is happening: the .a file is introducing symbols that were not in the original object file, these extern symbols were probably available earlier, but ld skipped over them because they were not needed at that time.
 

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LEARN ABOUT DEBIAN

gpt_build_config

GPT_BUILD_CONFIG(8)					User Contributed Perl Documentation				       GPT_BUILD_CONFIG(8)

NAME

       gpt_build_config - Returns a minimized list of ldflags from a list of globus packages and external libraries.

SYNOPSIS

       gpt_build_config -src <source metadata file> -f <globus_flavor_name> -link [static|shared]

DESCRIPTION

       gpt_build_config creates a file in it's current directory named gpt_build_temp.sh that contains a list of necessary flags assembled from
       the build environment metadata of the packages on which the source metadata depends.  This scanning is done recursively to cover the entire
       dependency tree.  This script was initially inspired by the shell script gnome_config.

LINK ORDER

       The flag list returned by gpt_build_config is assembled in dependent order.  A dependency between two libraries occurs when one library
       needs the symbols of another library in order to link correctly.  For most linkers the library providing the symbols has to be linked after
       the library that needs the symbols.  For example, from the line:

	  -L/opt/Xpm/lib -lXpm -L/usr/lib/X11 -lXm -lX

       gpt_build_config assumes that the library Xpm is dependent on Xm which in turn is dependent on X.  In addition, gpt_build_config assumes
       that Xpm is located in /opt/Xpm/lib and Xm and X are both located in /usr/lib/X11.

BUGS

       Circular dependencies between libraries are not supported.

AUTHOR

       Michael Bletzinger <mbletzin.ncsa.uiuc.edu> and Eric Blau <eblau.ncsa.uiuc.edu>

perl v5.14.2							    2012-04-30						       GPT_BUILD_CONFIG(8)
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