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Re: unresolved symbols with ncurses-5.6 on Alpha OSF1 5.1A

From: Thomas Dickey
Subject: Re: unresolved symbols with ncurses-5.6 on Alpha OSF1 5.1A
Date: Tue, 17 Apr 2007 20:24:27 -0400 (EDT)

On Tue, 17 Apr 2007, Martin MOKREJŠ wrote:

make[1]: Entering directory `/usr/home3/mmokrejs/ncurses-5.6/progs'
gcc ../objects/tic.o ../objects/dump_entry.o -L../lib -lncurses -L../lib -lncurses -I../progs -I. -DHAVE_CONFIG_H -I. -I../include -D_OSF_SOURCE -DNDEBUG -I/usr/home3/mmokrejs/include/ncurses -O2 -o tic
collect2: ld returned 1 exit status

As I noted, you may be able to add an option to gcc to show the specific
files it opens.  But in the instance where you used -v, I only saw the
specs file listed.

Making simpler the above compile/linker command while retaining -lncurses makes the linking step fail again:

$ gcc ../objects/tic.o ../objects/dump_entry.o -I../progs -I. -DHAVE_CONFIG_H -I. -I../include -D_OSF_SOURCE -DNDEBUG -I/usr/home3/mmokrejs/include/ncurses -O2 -o tic -lncurses
On this instance I don't see a -L option.

So gcc will pick up libncurses from its preferred location, e.g., /usr/local/lib

Let's link statically the new libncurses.a ...

$ gcc ../objects/tic.o ../objects/dump_entry.o ../lib/libncurses.a -I../progs -I. -DHAVE_CONFIG_H -I. -I../include -D_OSF_SOURCE -DNDEBUG -I/usr/home3/mmokrejs/include/ncurses -O2 -o tic

I'd like to solve it this way - but recall some linkers simply put the entire contents of the ".a" file in the output.

$ ./tic
tic: File name needed.  Usage:
tic [-e names] [-o dir] [-R name] [-v[n]] [-V] [-w[n]] [-1aCcfGgILNrsTtUx] source-file
$ ls -la /usr/local/lib/libncurses*
-rwxr-xr-x 1 root system 85030 Jun 1 2001 /usr/local/lib/libncurses++.a -rw-r--r-- 1 root system 341328 Jun 1 2001 /usr/local/lib/libncurses.a -rw-r--r-- 1 root system 178976 Jun 1 2001 /usr/local/lib/libncurses.so -rw-r--r-- 1 root system 2318006 Jun 1 2001 /usr/local/lib/libncurses_g.a

So, my problem is that static libs are being built on my system, but linker is instructed to use shared libs. Incidentally, gcc picks up the old libncurses installed in /usr/local.

Thomas E. Dickey

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