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Compiling your Fortran program for debugging

To prepare your program for debugging when using the command line (ifort command):
In a command window, (such as the Fortran command window available from the Intel Fortran program folder), compile and link the program with full debug information and no optimization:

      ifort -g file.f90 (Linux OS and Mac OS X)

      ifort /debug:full file.f90 (Windows OS)

On Windows OS, specify the /debug:full compiler option to produce full debugging information. It produces symbol table information needed for full symbolic debugging of unoptimized code and global symbol information needed for linking.
How to use Intel idb as debugger.
IDB comes with good help information
eg, (idb) help run
Run the debugger program.

Usage:

    run   (arguments) (redirections)

Arguments:

     Run the program with the specified arguments.

                Run the program with the specified input and output
                redirections.

If no arguments and redirections are specified, program is run with arguments
and redirections specified by previous “run” command with arguments or by “set
args” command.

Synonyms: “r”.
To run the exe in debug mode from command line, use devenv with debugexe option.. read more for How To Run .exe In Debug Mode Microsoft Visual Studio.

Eg. > devenv /DebugExe r280test01.exe

After windows debugger starts Hit F10 key to start debugging.
Check out How to use dbx as debugger for fortan debugging here.
Check out Debugging Fortran programs with gdb here
Intel® Debugger (IDB) Manual

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1. Ifort -extend-source Option Errors & Fortran Fixed Formatting Use nofree
2. How To Run .exe In Debug Mode Microsoft Visual Studio 2008
3. How To Debug Err This Application Has Failed To Start Because MSVCR90.dll Was Not Found

Using Devenv

Devenv allows you to set various options for the integrated development environment (IDE);

/DebugExe

Loads a Visual C++ executable under the control of the debugger. This switch is not available for Visual Basic or Visual C# executable.

Example : if your win32 binary executable name is test.exe then, to run this win32 binary in debug mode use this command on windows command prompt.

C:\tmp>devenv /DebugExe test.exe

Your default debugger will start and loads this binary for debug mode. Then just hit F10 Key to go to main function. For Now on your debugging starts, ie to step into function use F11 key, you can put breakpoints and all debugging stuff.
I assume that you have compiled the binary test.exe with debug flag enabled, else debugger will not find the debug symbols and will not load the code.

Using Image File Execution Options

To setup an application to launch the debugger automatically.
How to: Launch the Debugger Automatically
the Image File Execution Options folder, locate the name of the application you want to debug, such as myapp.exe. If you cannot find the application you want to debug:

1. right-click the Image File Execution Options folder, and on the shortcut menu, click New Key.
2. Right-click the new key, and on the shortcut menu, click Rename.
3. Edit the key name to the name of your application; myapp.exe, in this example.

read more
How to open a file, and go to a line number
devenv /edit E:\code.cpp /command “edit.goto 45″

In this example, devenv will open the code.cpp file, and go to line 45.

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1. How To _access Function For Long File Names As Path In Winddows Programming Use UNC
2. How To Resolve Error __curr_eh_stack_entry and __eh_curr_region With pgcpp C++ Compiler
3. ICET 2010 answer Key www.icet2010.net/

Building an application software using pgcc compiler, developed by C++ Language generates two external references of symbols [__curr_eh_stack_entry] and [__eh_curr_region], and results in kink error. Why?

How To Resolve Error __curr_eh_stack_entry and __eh_curr_region With pgcpp C++ Compiler?

Answer:
Compiler automatically generates these symbols when -exception (C++ exception handling) and -rtti=on (Runtime type information) options are used. If these option is not required to use, Please do not enable them.
source

-rtti(default) –no_rtti An pgcc compiler option switch.
Enable (disable) support for RTTI (runtime type Information) features: dynamic_cast, typeid.

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How To _access Function For Long File Names As Path In Winddows Programming make Use of UNC standards

Solution use the UNC(Universal Naming Convention) conventions for path to be specified while working with windows programs.

ie the path should be “C:\\Documents and Settings\\0001″

Now The next problem is wanted to use period ie . in file name path,

Eg. I need to use the path as “C:\\Documents and Settings\\.test\\0001″
So tried with something like “\\.\” But The “\\.\” prefix will access the Win32 device namespace instead of the Win32 file namespace.

Then how to Turns off automatic expansion of the path string? Use  the “\\?\” prefix also allows the use of “..” and “.” in the path names. To specify an extended-length path, use the “\\?\” prefix. For example, “\\?\D:\<very long path>”.  Read more about Naming Files, Paths, and Namespaces

That did not help much, and tried directly with “C:\\Documents and Settings\\.test\\0001″ It works.
you can also try the PathFileExists function

access function Return Value

Each function returns 0 if the file has the given mode. The function returns –1 if the named file does not exist or is not accessible in the given mode;

Do share your questions and views..

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sockets based on WINSOCK:

File control locking:

Memory mapping and shared memory
mmap()

System V IPC
semaphore; Shmget can be implemented using CreateFileMaping or
OpenFileMapping
shmdt can be implemented using UnmapViewOfFile
shmat can be implemented using MapViewOfFile
Pipe to _pipe
Close to _close

Runtime linking of dynamically linked libraries : like The dlopen(), dlsym() interface
Error mapping from Windows to UNIX

Symbolic links
Symbolic links to files and directories can be created and can be implemented as Windows shortcuts.

Few Good References for Unix2Win porting

1. Porting Socket Applications to Winsock
2. Process and Thread Functions
3. Winsock Programmer’s FAQ Articles: BSD Sockets Compatibility
4. LibGW32C for GNU C library for Windows
5. Unix to Windows Porting Dictionary for HPC
6. UNIX Application Migration Guide

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2. Unresolved External Symbol _getenv_ USE IFPORT Link Error For Application Porting From UNIX To Win32
3. How To Capture X Protocol Traffic Using Wireshark On Windows XP?

==>> 

Here are simple steps to Cross compile python for ARM target board.

1) setup ARM tool chain with X11
2) export PKG_CONFIG_PATH

install dependencies
====================

Dependencies taken from DEBIAN
——————————
1) libdb
copy

2) libsqlite3
copy and change prefix in sqlite3.pc

3) ncursesw
copy

Dependencies installed from source
———————————–
1) bzip2
edit Makefile

CC=arm-linux-gcc
AR=arm-linux-ar
RANLIB=arm-linux-ranlib
PREFIX=your_toolchain_prefix_path

make
make install

2) gdbm
./configure –host=arm-linux –target=arm-linux –prefix=/xxx/yyy –enable-shared
make
make install
3) tcl-8.4.19
cd to unix folder

export ac_cv_func_strtod=yes
export tcl_cv_strtod_buggy=1

CC=arm-linux-gcc ./configure –host=arm-linux –prefix=/xxx/yyy

make
make install DESTDIR=/xxx/yyy

Note: dont install in prefix otherwise tk is not compiling.

4) tk-8.4.19

./configure –host=arm-linux CC=arm-linux-gcc
–prefix=/xxx/yyy –with-tcl=<path to unix folder in source of tcl>

make

make install

Note: you may have to move X11R6 from toolchain to /usr because its looking  in /usr for the X11 libs. if you do so remember to take backup of your /usr/X11R6 and then restore when you are done cross compiling python. Later find out why Makefiles are looking for X11R6 in /usr and change the path in those Makefiles..

5) readline-6.1
./configure
make
make install

6) openssl-0.9.8
There is no need to type configure, a Makefile is already existing. We just need to edit it and change it with way:

INSTALLTOP=/opt/external_packages/openssl/0.9.8g/compiled/xxx-yyy-linux-gnu
OPENSSLDIR=/opt/external_packages/openssl/0.9.8g/compiled/xxx-yyy-linux-gnu

CC= xxx-yyy-linux-gnu-gcc
AR=xxx-yyy-linux-gnu-ar $(ARFLAGS) r
RANLIB= xxx-yyy-linux-gnu-ranlib
To compile and install the OpenSSL project, type successively make and make install. You should find the directories and files listed above under /opt/external_packages/openssl/0.9.8g/compiled/xxx-yyy-linux-gnu/.

change pkg-config files

Patching Python-2.6.2 before crosscompile
—————————————–
1) ./configure
2) make python Parser/pgen
3) mv python hostpython
4) mv Parser/pgen Parser/hostpgen
5) make distclean

6) apply the patch Python-2.6.2-xcompile.patch
patch -p1 < Python-2.6.2-xcompile.patch

7) In Modules/Setup.config and setup.py according to
Setup.config and setup.py (TODO: make patches for setup.py and Setup.config).
edit Modules/getaddrinfo.c and change “u_” to “unsigned ”

Compiling Python-2.6.2
———————-
CC=arm-linux-gcc CXX=arm-linux-g++ AR=arm-linux-ar RANLIB=arm-linux-ranlib ./configure –host=arm-linux –build=i686-pc-linux-gnu –prefix=/xxx/yyy
make HOSTPYTHON=./hostpython HOSTPGEN=./Parser/hostpgen BLDSHARED=”arm-linux-gcc -shared” CROSS_COMPILE=arm-linux- CROSS_COMPILE_TARGET=yes
make  install HOSTPYTHON=./hostpython BLDSHARED=”arm-linux-gcc -shared” CROSS_COMPILE=arm-linux- CROSS_COMPILE_TARGET=yes prefix=~/Python-3.1.2

Dependencies – Setup.config and setup.py are configuration files are required to be modify for ARM board.

Downloads required for Cross Compiling Python for Embedded Linux

1. Setup.config
2. setup.py

Note -Rename python_setup_file to setup.py
Links -  Download Python

python corss compile patch used.

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Intel® Fortran compiler(ifort) – Option -extend-source

       -extend-source [size]
	      Specifies the column number to use to end the  statement	field
	      in  fixed-form source files. [size] can be 72, 80, or 132.  The
	      default behavior is -noextend-source, which implies column  72.
	      If  you  do  not	specify	 size,	it  is the same as specifying
	      -extend-source 132.

source ifort help or man ifort

Solution
The Makefile has a compiler flag called /extend_source:132, which basically extends the number of columns the Fortran compiler looks at. The default value is 72. /extend_source extends the number of columns that the compiler looks at to 132.

Fortran generally uses something called as Fixed Formatting - which takes 72 valid columns, ignores the rest and also considers tabs and spaces as comments inside a statement field.
/nofree tells the compiler that fixed formatting needs to be used. Most of the time code follows fixed formatting.

TO remove all compiler errors which pertain to syntax errors at Format statement just add some variable in your makefile, like
COLEXTEND=/extend_source:132

And when facing problem while compiling any fortran module in Windows just compile with COLEXTEND= /nofree.

example of make command, assuming windows makefile name as win.make

on command prompt type : nmake /f win.make COLEXTEND=/nofree

Good luck and do comment your experiences as well.

Related problem regarding

-extend-source option

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Google and the wireshark manual/wiki give no hints (ie. How do you capture DISPLAY=:0.0 traffic ?). Setting wireshark to capture “local” (127.0.0.1) or “any” devices captured nothing. The remote X11
server doesn’t support XRandR so it’s no help.

If you set DISPLAY=localhost:0 then the client will use TCP on the
loopback interface and wireshark can capture that. Of course your X
server can’t be running with “-nolisten tcp”, which is default in many
installations. thanks to Xcb thread discussion

Challenges
I want to capture localhost traffic on Windows Xp machine with Wireshark, and it fails.
Did google on it about Is there a way to get wireshark to capture packets sent from/to localhost on Windows?
Got this info from WIKI Loopback capture setup
Which says I need to install Loopback adapter and steps here for Microsoft: How to install the Microsoft Loopback adapter in Windows XP

This method did not help much expect able to capture only ARP packets,

Capturing local traffic on Windows XP Route method
> route add 155.132.130.129 mask 255.255.255.255 155.132.130.1 metric 1
where 155.132.130.129 is your local IP, and 155.132.130.1 that of your default gateway. You must have “Advanced TCP/IP Settings > Automatic metric” disabled! What it does is basically force each packet intended for localhost to go out to the default gateway first, from which it will come back again. Of course this means you see each packet twice.

===Not directly, but if you are on a network with a gateway, you can use the
command-line ROUTE command to redirect the packets through the gateway, which will bounce the packets back at your machine so Ethereal/Wireshark can capture them.  You can use comview tool. It can fullfil your wish. Wireshark does not use IM driver but it uses protocol driver.

Still digging on How To Capture X Protocol Traffic Using Wireshark On Windows XP?

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Wooo , this error I got, when i tried to add play with functions.php file,
I am using gridfocus-wordpress template,
Reason Why I was playing with this function is, I did not see any adds when the visitor comes on the pages with under pages TAGS
Eg, when visitor comes on this page,

from google.co.in on “Posts tagged “tancet2010-rank-list” – Mahol Dot Org”

I am unable to show the Adds, but it is not problem with visitor comes from google.co.in on “www.unipune.ac.in | Pune Board | MKCL Results Pune

I could not able to locate the place, so thought of playing with functions.php file
I have just added the new line in this function and boom..
Parse error: wp-content/themes/grid_focus/functions.php on line 6
Nothing is coming up, unable to save the templates as well..
Solution:
Login to FTP, download the grid focus template. , and upload the file functions.php in /wp-content/themes/grid_focus.

This saved me, since I did not have taken backup of my blog and just doing changes.

Thanks god I am back. Enjoy

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