[Solved] gcc: cannot compile a program with a custom GMP library

[Hadi_Lovelorn]

I purged libgmp10-dev from Debian 12 Bookworm and then installed GMP 6.3.0 from source with debug options :

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./configure --disable-shared --enable-assert --enable-alloca=debug --host=none CFLAGS=-g

I want to compile my program as :

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gcc -o -g ~/program ~/program.c -lgmp -L/usr/local/lib/libgmp.a

but GCC gives error :

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/usr/bin/ld: /home/lovelorn/program: stderr: invalid version 2 (max 0)
/usr/bin/ld: /home/lovelorn/program: error adding symbols: bad value
collect2: error: ld returned 1 exit status

How should I compile it ? and then debug it ?

Before these options my program got compiled successfully but didn't run and give : segfault error .....

[ruwolf]

I think you should also add -I (with apropriate path of directory with header files) in command-line of gcc (but I am not sure).

[Aki]

Hello @Hadi_Lovelorn,

I purged libgmp10-dev from Debian 12 Bookworm and then installed GMP 6.3.0 from source with debug options :

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./configure --disable-shared --enable-assert --enable-alloca=debug --host=none CFLAGS=-g

I want to compile my program as :

Code: Select all

gcc -o -g ~/program ~/program.c -lgmp -L/usr/local/lib/libgmp.a

but GCC gives error :

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/usr/bin/ld: /home/lovelorn/program: stderr: invalid version 2 (max 0)
/usr/bin/ld: /home/lovelorn/program: error adding symbols: bad value
collect2: error: ld returned 1 exit status

How should I compile it ? and then debug it ?

Please focus on one topic at a time.

You cannot debug a program that does not yet exist as a binary file.

Please change the subject of the first post from "How to use GDB for debugging GMP library-used program" to "gcc: cannot compile a program with a custom GMP library".

Thanks.

[Hadi_Lovelorn]

ruwolf

Thank You , I will check it

Aki

Done ... Thank You

[Aki]

I purged libgmp10-dev from Debian 12 Bookworm and then installed GMP 6.3.0 from source with debug options :

Code: Select all

./configure --disable-shared --enable-assert --enable-alloca=debug --host=none CFLAGS=-g

I want to compile my program as :

Code: Select all

gcc -o -g ~/program ~/program.c -lgmp -L/usr/local/lib/libgmp.a

but GCC gives error :

Code: Select all

/usr/bin/ld: /home/lovelorn/program: stderr: invalid version 2 (max 0)
/usr/bin/ld: /home/lovelorn/program: error adding symbols: bad value
collect2: error: ld returned 1 exit status

The errors are printed by the linker (ld).

It is only possible to guess why without the working full source code of your program called "program.c" (and the same for the library).

Just a wild guess: you probably did something strange when building libgmp.a.

Why don't you use the libgmp.a available in the Debian repositories?

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$ apt-file search libgmp.a
libgmp-dev: /usr/lib/x86_64-linux-gnu/libgmp.a

Debugging symbols are available for Debian packages in a dedicated repository and they can be installed using apt, e.g.:

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# Bookworm debug symbols
deb http://deb.debian.org/debian-debug/ bookworm-debug main contrib

Therefore, there's no need to build a custom library to get debug symbols.

Anyway, you probably don't need to debug the library, since you need to find bugs in your program first (to find general errors and errors in using the library functions).

Assuming, of course, that the gmp library is the right choice for your purpose.

[blackbird]

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gcc -o -g ~/program ~/program.c -lgmp -L/usr/local/lib/libgmp.a

You should review how the "-o" option works and correct the order of your arguments. Currently you try to link together your old program with program.c and gmp.

[Hadi_Lovelorn]

blackbird

You are right , I should write -g before -o ... Thank You .......