11-28-2010
The short answer is that gcc builds symbol tables on the fly by parsing your code into required symbols (a "myfile".o file plus the crt1.o file (where _start() lives) ), then invoking ld against those symbols.
Try nm on a.o file.
nm has to read an ELF file, then resolve the symbols. Every entry point and variable (except those optimized away) constitutes something nm has to re-engineer. If you are on linux or have support ELF image files, then you can get the readelf utility. Try it.
Or download readelf.c and check out what nm has to deal with.
rpm: file/src/readelf.c Source File
If you ever build large database programs, example: Oracle Pro*C, you will find it takes a while to build one.
This User Gave Thanks to jim mcnamara For This Post:
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
:confused: I have a question concerning gcc. IŽd like to install the gcc on my Mac OS X, but when I try to run the configure command I get the following message:
floriant% ./configure
./configure: read-only variable: PWD
Configuring for a powerpc-apple-darwin5.4 host.
*** This configuration... (2 Replies)
Discussion started by: florian.turck
2 Replies
2. Programming
i write c++ code it run perfectely with g++ compiler but same code when i compile with
GCC compiler it gives linker error , followed these linker error
/tmp/ccfZtXOQ.o(.text+0x22): In function `main':
conf_system.cpp: undefined reference to `operator new(unsigned int)'... (5 Replies)
Discussion started by: munnu
5 Replies
3. UNIX for Dummies Questions & Answers
Hi,
we are converting from IBM-AIX(xl c/c++ compiler) to Linux(GCC complier).
As a part of this i need to change the CFLAGS.
The xl c/c++ complier CFLAGS is
CFLAGS := $(CDEBUG) $(PROJECT_INCLUDE_DIRS) $(COBJECT_MODE) -qcpluscmt -qmakedep -qcheck=all \
-qalign=bit_packed $(LINT_FLAGS)... (0 Replies)
Discussion started by: pbattu1
0 Replies
4. UNIX for Dummies Questions & Answers
i am newbie my querry is
if i am having a gcc compiler which has been a native build with a particular version of binutilities..then when i will use this compiler to build other packages ..then in the linking stage which linker it will use if i do not set my path.
...will it uses by default... (0 Replies)
Discussion started by: mobydick
0 Replies
5. Solaris
OS : UNIX SUN SOLARIS 10
I installed gcc - 3.4.2 in sun solaris 10 unix machine. But i need to install gcc 2.7.2.3 now. Do i need to uninstall gcc-3.4.2 and install gcc - 2.7.2.3 or can i directly install gcc 2.7.2.3 without uninstalling gcc 3.4.2.
I used pkgadd -d command to install gcc. (3 Replies)
Discussion started by: satish@123
3 Replies
6. Ubuntu
where to download gcc compiler for ubuntu?
how to install?
how to build and run "c programs"?
screen shots if possible.....:b::D
tutorials too:cool: (5 Replies)
Discussion started by: villanarun
5 Replies
7. Shell Programming and Scripting
I am using open suse linux. I want to install gcc compiler in my machine. I ahve checked man gcc and man cc. But it's not there. Can someone help me (4 Replies)
Discussion started by: pritish.sas
4 Replies
8. Programming
Which gcc compiler release had the Arm 9 multicore support?Whether the compiler that used for the single Arm 9 core can be used for its multicore systems ?
If gcc not support,please tell me which are the compilers that are available for Arm 9 multicore systems (including commerical).Whether... (0 Replies)
Discussion started by: sujith4u87
0 Replies
9. UNIX for Dummies Questions & Answers
hi,
can we install gcc compiler in unix based OS(sun solar,IBM AIX,HP,etc) and also
can we install sun cc compiler in AIX environment and vice versa.
and more ..is linux support cc compiler
regards
Ajay (3 Replies)
Discussion started by: ajaysahoo
3 Replies
LEARN ABOUT OPENSOLARIS
libglib
libglib(3LIB) libglib(3LIB)
NAME
libglib - library of useful routines for C programming
SYNOPSIS
Use glib-config(1) to determine compiler and linker flags.
DESCRIPTION
GLib includes a number of support routines for C. For a list of functions provided in the library, type:
info glib
For a more detailed description of the library contents and its use, see:
http://www.gtk.org/api/
LICENSE
GNU Lesser General Public License (LGPL)
FILES
/usr/sfw/lib/libglib.so
shared object
/usr/sfw/lib/libgmodule.so
shared object
/usr/sfw/lib/libgthread.so
shared object
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWGlib |
+--------------------+-----------------+
|Interface Stability | External |
+--------------------+-----------------+
SEE ALSO
glib-config(1)
NOTES
Source for glib is available on http://opensolaris.org.
7 May 2001 libglib(3LIB)