gcc undefined reference between libraries

Question

At linking time, I'm getting the following:

libMain.a(Object.o): In function `Object': 
Object.cpp(44): undefined reference to `Transform::MakeIdentity()'

It is definitely seen from using nm --defined-only libSystem.a

Transform.o:
00000000 T Transform::MakeIdentity()

Both libSystem.a and libMain.a are being input appropriately. Linker command line options:

-o "Game.so" -shared -Wl,-z,noexecstack "-lstdc++" "-lsupc++" "-lgnustl_static" "-lgcc" "libSystem.a" "libMain.a" -nostdlib -l"c" -l"m" -l"log" -l"gcc" -Wl,-soname,"libGame" -Wl,--no-undefined

See http://stackoverflow.com/questions/45135/linker-order-gcc — NPE, Mar 02 '13 at 15:20
@NPE Just editted my question to mention I've tried re-ordering libraries. — Mike Weir, Mar 02 '13 at 15:22
Does it make a difference that your file is a `.cpp` but you're using gcc instead of g++? — Austin Mullins, Mar 02 '13 at 15:23
@AustinMullins As far as I'm aware, gcc will invoke g++ on .cpp files. — Mike Weir, Mar 02 '13 at 15:24
@NPE Nevermind, that solved it - thanks. When I was putting them twice in the IDE I was using, it would delete the second mention of the same library. — Mike Weir, Mar 02 '13 at 15:28

score 4 · Accepted Answer · edited May 23 '17 at 12:29

4

The order in which you link static libraries matters. For a detailed discussion, see Why does the order in which libraries are linked sometimes cause errors in GCC?

edited May 23 '17 at 12:29

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answered Mar 02 '13 at 15:29

NPE

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gcc undefined reference between libraries

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