From:	Jindrich Kubec <kubecj AT asw DOT cz>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Skipping unused code while linking
Date:	Thu, 21 Dec 2000 14:35:35 +0100
Organization:	Video On Line
Lines:	39
Message-ID:	<3A420727.B5569CF5@asw.cz>
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To:	djgpp AT delorie DOT com
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Hello!

I have two modules:
a.cpp:
char* a();

int main(int argc, char* argv[])
{
	a();
	return 0;
}

b.cpp:
char* a()
{
	char* c = "fn_a";
	c++;
	return c;
}

char* b()
{
	char* c = "fn_b";
	c++;
	return c;
}

When compiled with DJGPP, the executable consists of all the three
functions, even when 'b' is unused.
Under MSVC it consists only of 'main' and 'a' functions. If I got it
right, they are producing one .text sections for each function while
compiling and the linker uses only 'needed' sections.

Is this possible with DJGPP (or with any other DOS/W32 GCC based
compiler?)

-- 
Jindroush <kubecj AT asw DOT cz>
See http://www.asw.cz/~kubecj for Atari 8bit utils!

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