actual link requirements

[Christian Stimming]

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Actually the last grep command in the pipe needs an extra "-F" argument,
or otherwise it will take forever :-)

Use the following lines for lookup of the actual link requirements:

> # All in top-level of gnucash build tree
> 
> # Create table of all exported symbols
> nm -A `find . -name '*.so'` | grep ' T ' | \
>   sed 's/^\([^:]*\).* \([^ ]*\)$/\1: \2/' > allsymbols
> 
> # For a particular library, check symbol import
> # requirements, listing all symbols (needs the file from above)
> A=src/gnc-module/.libs/libgw-gnc-module.so && echo "$A requirements:" \
>   && nm $A | grep ' U ' | sed 's/^.* \([^ ]*\)$/\1/' | \
>   grep -Ff- allsymbols
> 
> # For a particular library, check import
> # requirements, summarized by library
> A=src/gnc-module/.libs/libgw-gnc-module.so && echo "$A requirements:" \
>   && nm $A | grep ' U ' | sed 's/^.* \([^ ]*\)$/\1/' | \
>   grep -Ff- allsymbols | cut -d: -f1 | sort | uniq
> 
> # List all import requirements
> # summarized by library for a full directory
> for $A in `find src/business/business-core -name '*.so'`; do \
>   echo -e "\n##$A requirements:" && nm $A | grep ' U ' | \
>   sed 's/^.* \([^ ]*\)$/\1/' | \
>   grep -Ff- allsymbols | cut -d: -f1 | sort | uniq; done

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