Subject: Shared libraries and libgcc
To: None <>
From: Nick Hudson <>
List: tech-toolchain
Date: 09/13/2000 23:02:21
I'm trying to fathom out if shared libraries need libgcc or not. I've
collected the following information:

i)	libgcc isn't available in pic/PIC format
ii) doesn't include libgcc when linking
iii) has the comment

	     Another C string constant that tells the GNU CC driver program how
	     and when to place a reference to `libgcc.a' into the linker
	     command line.  This constant is placed both before and after the
	     value of `LIB_SPEC'.

	     If this macro is not defined, the GNU CC driver provides a default
	     that passes the string `-lgcc' to the linker unless the `-shared'
	     option is specified.

iv) gcc -v -shared file.o produced the following

	$ gcc -v -shared file.o
	Using builtin specs.
	gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)
	 /usr/libexec/collect2 -m elf_i386 -shared /usr/lib/crtbeginS.o
-L/usr/libexec file.o -lgcc -lc -lgcc /usr/lib/crtendS.o

v) suggests that shared libraries
need libgcc.

Basically I'm confused - can anyone help?