On your system does gcc generate 64 bit image code by default? -m64
sets 64 bit. Most systems default to 32 bit - the ones I have anyway.
Suppose you have
gcc reads thru objects and library lists from left to right during linking. It uses implicit libraries only after the list is exhausted. So the only reason I can see from what you gave is that gcc thinks it needs to link 32bit. I do not get why you are not getting errors.
Dear all, I have downloaded the latest version of gcc --- gcc-3.3.1.tar.gz from gnu.org. My Linux distribution is Mandrake 9.0. This was how I installed it:
su -
passwrd:
mkdir /usr/local/src
cd /usr/local/src
gunzip /tmp/gcc-3.3.1.tar.gz #where I downloaded the file
tar xvf... (2 Replies)
Im trying to compile some code that involves using X-Windows based functions (XDisplayName() and XOpenDisplay() ), however each time I run the compiler, Im getting a problem with the linker.
The linker says that both XDisplayName() and XOpenDisplay() are unresolved text symbols. Is there a... (1 Reply)
Hi,
I'm confused about the GCC & Linking process could somebody please briefly explain?
I have GCC 3.4.6 installed from SunFreeware. Reading the narrative alongside the package states "It was compiled to use the SUN assembler and loader usually in /usr/ccs/bin if the SUNW developer packages... (1 Reply)
Hello
I using CygWin and am working on project that requires whereby after I make some code changes and rebuild I have to manually copy the updated files into the install directory to test them. There is a build output directory where these files placed, but the program will not run from there.... (4 Replies)
Hi,
I would like "grep" command to search ALL files in current directory in the order of their modified/created date. How can i do this?
e.g., if 3 files contain the pattern i am searching for, i need the output of "grep" to be in the order such that old file search result should come first.... (6 Replies)
Hi,
I do not use the default linker, and instead us another one and pass this argument -Wl,--dynamic-linker=<path to linker> to gcc when compiling. However, what happens if the linker is not under /lib and /lib64 and I am not able to create a symlink to the linker in /lib or /lib64 due to no... (2 Replies)
Hai,
I have two (Pgm1.c and Pgm2.c) simple programs, which is compiled using gcc. Now we have two exe's (Pgm1 and Pgm2). When i executed the nm Pgm1 and nm Pgm2, in the listed symbols the address of main is same for both programs (08048344 T main) at run time also.
Doubt:
1) What is this... (3 Replies)
I would like to compile a binary that doesnot depend on LD_LIBRARY_PATH as this binary will be setuid to owner and used by other users and since setuid doesnot support LD_LIBRARY_PATH making it independent of LD_LIBRARY_PATH would be great.
But I am not able to specify the path of the shared... (1 Reply)
Probably simple, but I don't see it.
jack@veritron /u/email $ cat p3.php
<?php
require_once './lib/swift_required.php';
$x=get_include_path();
echo "$x \n";
set_include_path('./lib:./lib/classes:'.$x);
$x=get_include_path();
echo "$x \n";
$transport =... (1 Reply)
Discussion started by: jgt
1 Replies
LEARN ABOUT DEBIAN
trampoline
TRAMPOLINE(3) Library Functions Manual TRAMPOLINE(3)NAME
trampoline - closures as first-class C functions
SYNOPSIS
#include <trampoline.h>
function = alloc_trampoline(address, variable, data);
free_trampoline(function);
is_trampoline(function)
trampoline_address(function)
trampoline_variable(function)
trampoline_data(function)
DESCRIPTION
These functions implement closures as first-class C functions. A closure consists of a regular C function and a piece of data which gets
passed to the C function when the closure is called.
Closures as first-class C functions means that they fit into a function pointer and can be called exactly like any other C function. func-
tion = alloc_trampoline(address, variable, data) allocates a closure. When function gets called, it stores data in the variable variable
and calls the C function at address. The function at address is responsible for fetching data out of variable immediately, before execu-
tion of any other function call.
This is much like gcc's local functions, except that the GNU C local functions have dynamic extent (i.e. are deallocated when the creating
function returns), while trampoline provides functions with indefinite extent: function is only deallocated when free_trampoline(function)
is called.
is_trampoline(function) checks whether the C function function was produced by a call to alloc_trampoline. If this returns true, the argu-
ments given to alloc_trampoline can be retrieved:
trampoline_address(function) returns address,
trampoline_variable(function) returns variable,
trampoline_data(function) returns data.
SEE ALSO gcc(1), varargs(3), callback(3)BUGS
Passing the data through a global variable is not reentrant. Don't call trampoline functions from within signal handlers. This is fixed in
the callback(3) package.
PORTING
The way gcc builds local functions is described in the gcc source, file gcc-2.6.3/config/cpu/cpu.h.
AUTHOR
Bruno Haible <bruno@clisp.org>
ACKNOWLEDGEMENTS
Many ideas were cribbed from the gcc source.
25 October 1997 TRAMPOLINE(3)