Re: Problem with static library linking

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Problem with static library linking
\ Harish (24 Mar 2008)
. \ Eljay Love-Jensen (24 Mar 2008)

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Subject:	Re: Problem with static library linking
Group:	Gcc-help
From:	Eljay Love-Jensen
Date:	24 Mar 2008

Hi Harish,

> In my link line libpcap.a comes before mylib.a

Since mylib.a depends on libpcap.a, mylib.a should come before libpcap.a on
your link line.

Otherwise, unfulfilled symbols in mylib.a won't be found because libpcap.a
had already been processed.

Order of archives on the link line is significant.

If you have circular dependencies in your archive libraries (ugh! Avoid if
possible!), you can do:

gcc -o myapp \
foo.c \
alpha.a \
beta.a \
alpha.a

...or on many platforms that use GNU ld...:

gcc -o myapp \
foo.c \
--Wl,--whole-archive \
alpha.a beta.a \
--Wl,--no-whole-archive

HTH,
--Eljay