Programming :: Fexec-charset For Preprocessor Or For C Compiler?
Dec 24, 2010
I'm reading about GNU CPP(GNU C preprocessor). In the CPP manual -> 1.1 Character sets:
Code:
After preprocessing is complete, string and character constants are converted again, into the execution character set. This character set is under control of the user; the default is UTF-8, matching the source character set. I think "under control of the user" means to use the option -fexec-charset=, right? And in the above part, it says pretty clear: "After preprocessing is complete", so the job -- "string and character constants are converted again, into the execution character set" -- should be done by the C compiler(compilation proper), not GNU CPP. Then the option -fexec-charset= should be an option controlling the C compiler, not the preprocessor. But in the GCC manual, this option is listed in the "3.11 Options Controlling the Preprocessor". I don't understand this, If this option is an option controlling the preprocessor, it conflicts with the CPP manual. How to understand this?
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Jan 31, 2010
Recently, every time I try to compile an app from its source code, after issuing the ./configure command I get this message:configure: error: C preprocessor "/lib/cpp" fails sanity checkSee `config.log' for more details.I check /lib/cpp but there is not directory named /cpp under /libthis problem occurs on all source packages.
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Jan 18, 2011
Why do I still get mutiple definition of "_my_variable" error even after I used the #ifndef preprocessor in my hpp file?
This is my scenario
I have:
1. A.cpp (including X.hpp)
2. B.cpp (including X.hpp)
3. X.hpp
[Code]...
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Jul 13, 2011
I installed Fedora on my machine. I'm very new at Linux but would like to start coding in C++. I would like to know the steps to write and compile a Hello World program using C++ in Linux. (I've been a Microsoft person all my life).
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Jun 8, 2010
I am trying to learn C Programing and I'm having trouble on the output of my script. my script should count the characters in input but it doesn't give me any numbers..
here's my program code:
Code:
#include <stdio.h>
main()
{
double nc;
[code]....
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May 26, 2010
compile package C++ with GNU compiler under Linux, I can share my program's
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Aug 11, 2010
I am using a arm compiler to build my program but getting following compiler error at the end -
init.c.text+0x2c): undefined reference to '__libc_csu_fini'
init.c.text+0x34): undefined reference to '__libc_csu_init'
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May 26, 2010
I am using the C++ compiler G++ to compile my programs on Linux Mint 8 - Gnome.
I recently installed QT and when I tried to compile a simple "Hello World!" program it gave me this error:
Quote:
This is the code in HelloWorldQt.cpp:
Code:
I have tried using GTK instead but I get a similar error.
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Feb 3, 2010
I have a large existing codebase that all compiles under Ubuntu 8.04 with g++ using Scons. I've been given the task of getting it to compile for Arm9 running uclinux. I have a arm-elf-g++ compiler that I need to use instead of the gcc version. I ended up borking my /usr/lib/scons/SCons/Tool/g++.py file to use arm-elf-g++ instead of g++, but I know that this is not correct, as I have to go edit that file every time I change compilers.
These are the 2 lines I switch out:
Code:
compilers = ['arm-elf-g++']
#compilers = ['g++']
I simply can not find anywhere in the scons documentation that indicates how to tell it to use a different compiler. It seems that it would go under "Environment" but beyond that I'm lost. The CPPPATH variable seems like it only tells scons where to find #include files. I suppose I could rename arm-elf-g++ to g++ and just set my path to find that one first, but that seems like a bit of a hack as well. It would also break other things on my machine.
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Aug 20, 2010
I'm trying to figure out how pthreads are mapped from the compiler to the Linux kernel. The pthread prototypes are found in a compiler header file (pthread.h), yet the kernel would be responsible for scheduling the threads. So, how does the compiler resolve the pthread symbols at compile time?
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Apr 26, 2010
is there any way of using wherey() of turbo c function in gcc compiler like we have for gotoxy(), clrscr() functions.....
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Aug 31, 2009
i have finished installing mysql, howeve some of the files were missing, like mysql.h. i have downloaded a DEV version which has all the files im looking for, however when i add my c++ file to the directory that they are in, it still does not run because it cannot find the mysql.h where does the compiler look for these files, or where should i put them?
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Nov 20, 2010
I am using makefile to complile all C Programming files. But certain files are not getting compiled and hence its object file is not getting generated. This is happening due to files haven't been modified for a long time. It seems that compiler knows that its object file is there hence no need to complie it actually it is not.
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Jan 25, 2010
How can I disable structure alignment feature of gcc using command-line options ?I recently migrated to 64-bit OS, and doubt that I might be experiencing a structure alignment problem due to the new 64-bit architecture.I checked the sizes of the same C-style struct in both x86 and x86_64, and found out that they appear to be different by 20 bytes.I am not sure if this is due to structure alignment or the differences in data type lengths between two platforms.Hence, I will first disable the structure alignment feature, and then check the struct sizes again.
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Jul 18, 2011
I am using g++ 4.5.2 I copied and tried a piece simple (Making a Class Writealbe to a Stream) program, from page 363 of book(C++ cookbook), Example 10-6 your can download and test by yourself [URL]
[Code]....
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Dec 14, 2010
So for those of you who has built GCC from source would know that you can't install GCC without an existing GCC. So my question is, what would happen if all computers in the world suddenly just died, and all you had was the computer in front of you, and a copy of GCC 4.5. How would you install that?
I ask because I would like to install GCC 4.5 on my old powerbook G4 mac without installing a binary GCC provided by Tiger 10.4 disks. I would like to build GCC from source, without an existing GCC to complicate updating.
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Aug 11, 2011
I have webpage its charset is 8859-9 and it was prepared in windows with char encoding ascii. From ftp access, I am opening it via gedit in ubuntu then turkish chars changes like (turkish ı became ý). What can I do to avoid this kind of stupid things?
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Feb 5, 2015
I have moved from MS directX to OpenGL on Linux Debian. My computer is running Jessie version with Gimp. I am trying to use several of the gl 4.0 functions but getting compiler error. I check for OpenGL version and appears to be version 1.5 .... How can I verify the correct openGL version and how can I upgrade to a moder version of at least 4.0?
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Apr 24, 2011
My Linux: Fedora 14 x64
My gcc: 4.5.1
My Glibc: 2.12.90
target Linux: "Ubuntu 8.04.4 LTS" hardy
target kernel: 2.6.24-29-server x64
target gcc: 4.2.4 target Glibc: 2.7
I need gcc/g++ and fortran. I Googled and most documents I found are somehow outdated and targeting for ARM, not for other Linux.
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Jul 9, 2010
I changed the complier PGI to Intel. But i had some error message p4_error: interrupt SIGSEGV: 11 This error message was occured using intel compiler I don't know what is the ploblem.
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Sep 23, 2010
I am working for a product which was evolved over a decade. There I have some combination of C style coding and C++ coding in same libraries. I am landing on some instances where C style function is expecting forward declarations for some other function for which I can not declare (due to design and architecture). Is there any g++ compiler option that directs the g++ to look whole preprocessed file (because definition is there down in the preprocessed file) than only forward in the preprocessed file. All these years this code is working as we are using CC compiler and that looks entire preprocessed file than only in the forward direction.
<Sample Code
Header1.h file
Function1()
{
[code]....
if I can not include Header2.h first then Header1.h. I have to include Header1.h and Header2.h because on the design hierarchy in this product. Also the function definitions are in header files as they are either template functions or functions expanded through macros.
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Jul 6, 2011
This is my first post. I am unable to call some of the fftw3 library functions in a very simple fortran code. The code is as follows (the filename is trial.f):
Code:
program trial
implicit none
[code]...
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Apr 9, 2010
I've been working on my servers, one of them is Ubuntu and the other one is Debian (Newest), and both seams to have a problem with charset configuration.
They wont register ISO-8859-1, insted it says no value when i look at it with phpinfo() function. It's importen that i feel this is working.
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Nov 18, 2010
I've been mounting our windows network by opening nautilus and typing in the address bar:
smb://<servername>/share
and I am prompted to log in, all is fine.
however, I need to use some apps where I need to pick the folder from a file list, which I can't get to work with the above connection.
I then created the following line in my fstab file:
Code:
//<servername>/<share> /mnt/fileserver cifs credentials=/home/<username>/.smbcredentials,iocharset=utf8,file_mode=0777,dir_mode=0777 0 0
This appears to mount correctly, however there are some filenames on the server with the bullet character() in their name, and by mounting via fstab, the bullet shows as a question mark, but mounting from nautilus shows the bullet.
Anyway I can mount with fstab, and have all characters show properly in the filename?
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Aug 2, 2010
I am trying to build a cross GCC compiler for PPC476. I applied all the relevant patches. Cross compiler build was successful. When I try to compile the source code using the cross compiler I am getting the below error message. I think this is something related to linker.
Code:
cow_shim_funcs_startup_shutdown.o cow_shim_utils.o ../../dm/cfg/cfgi.a ../../dm/pl2/libsas21xxpl.a ../../raid/pfk/libpfk.a
/home/Raghu/gcc/cross-compiler/ppc/tools/lib/gcc/powerpc-unknown-linux-gnu/4.3.1/../../../../powerpc-unknown-linux-gnu/lib/libgcc_s.so: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make: *** [app.out] Error 1
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Jul 9, 2011
I am writing a C program which is contains Mysql header files and APIs but it can not compile it and its error is : Quote: undefined reference to
to all of Mysql APIs that I included their headers .In command line I compile my source like this with no problem: Quote: gcc test.c -Wall -o test -lz `mysql_config --cflags --include --libs`
I think code block does not have bold italic part of this command. How can I add this to code block to compile my project or those project that contains Mysql APIs (just my project not all of defined projects that has no relation to mysql APIs)with this gcc flags.
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Jul 10, 2011
I am writing a C program which is contains Mysql header files and APIs but it can not compile it and its error is :
Quote:
undefined reference to
to all of Mysql APIs that I included their headers .In command line I compile my source like this with no problem:
Quote:
gcc test.c -Wall -o test -lz `mysql_config --cflags --include --libs`
I think code block does not have bold italic part of this command. How can I add this to code block to compile my project or those project that contains Mysql APIs (just my project not all of defined projects that has no relation to mysql APIs)with this gcc flags.
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May 22, 2011
I've encrypted my root partition with LUKS and cannot remember my password. My main question is this: is it possible to extract the hash (or key; not sure on the correct terminology here) from the LUKS header and run it through a cracker? The hash type is SHA1 and I can remember the characters I used for the password, just not in the correct order (lots of special characters). That being said, given such a small charset, it should be crackable within a reasonable time, correct? Especially if I used a GPU accelerated cracker. What I don't know how to do is go about getting the hash from the LUKS header. Is any of this possible, or am I SOL? Of course, I have physical access to the system so I can boot it into any utilities I may need to.
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Aug 3, 2010
I have no idea what I've done but I can't compile from source anymore.
VectorLinux standard 6.0
everything I try to compile fails at ./configure with an error :
Quote:
The content of config.log: (kinda long)
Quote:
This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake.
It was created by mpc configure 0.8.2, which was generated by GNU Autoconf 2.65.
Invocation command line was:
configure: exit 1
I was intending to recompile gcc from source instead of the the one came with the distro, but to do so I need MPC, which I can't compile.
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Feb 11, 2009
I have the plugin installed ok and have pasted in a C source file that I know works and am getting the following errors, I think because the linker options need to be set in some way. I cannot copy the errors but they all complain of implicit declaration of functions like this: -
warning: implicit declaration of function strlen
But I have the headers included, is this a linker problem? Here is the code -
#include <stdio.h>
#include <math.h>
int main(){
[code]...
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