Position of declarations

[gib]

Hi, I'm compiling with icl some code that has previously been compiled with gcc. I'm getting errors because icl doesn't like declarations appearing after executable statements in a function. I can fix these errors by moving the declarations to the top of the functions, but I'm wondering is there is a compiler option that would take care of it. The source files have '.c' extension, and I'd rather not change that.

Thanks

Gib

[Om_S_Intel]

As long as you follow C language syntax, icc should compile without issue. The icc works for me.

$ cat hello.c

//hello.c

#include

int main()

{

printf("Hello World...!!!\n");

int x, y, z;

x = 5;

y = 10;

z = x+y;

float fx;

fx = 3.0* x;

printf("x = %d, y = %d, z = %d, fx = %f\n", x, y, z, fx);

return 0;

}

$ icc hello.c

$ ./a.out

Hello World...!!!

x = 5, y = 10, z = 15, fx = 15.000000

$ icc -V

Intel C Intel 64 Compiler Professional for applications running on Intel 64, Version 11.1 Build 20100128 Package ID: l_cproc_p_11.1.066

Copyright (C) 1985-2010 Intel Corporation. All rights reserved.

$ uname -a

Linux dpd22 2.6.18-52.el5 #1 SMP Wed Sep 26 15:26:44 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux

[Om_S_Intel]

It will help if you couldpost test case.

[Milind_Kulkarni__Int]

The workaround is to use:-- /Qstd=c99 option in Windows* . In Linux*, this option is not required.

[gib]

Your hello.c gives errors on Windows. It compiles as hello.cpp.

[gib]

Thanks Milind. My Makefile had -std=c99, not quite the same thing. It works now.

[gib]

I can use /Qstd=c99 when compiling with icl, but because of the makefile problems I've encountered (see my other thread) I am now trying to build this application using MS Visual Studio. I've tried adding the following to Configuration Properties > C/C++ > Command line > Additional options:

-Qstd:c99

/Qstd:c99

-Qstd=c99

/Qstd=c99

-std:c99

-std=c99

/Qc99

but none works.

Since the help docs say of Qstd that

IDE Equivalent

Windows: Language > Enable C++0x Support

I looked for such an option in the project properties, but didn't find it.

Is there a way to get the effect of /Qstd=c99 in MSVS?

[Milind_Kulkarni__Int]

When using MSVS, it seems you forgot to change to Intel compiler. so its using cl compiler, for which /Qstd=c99 does not work. To change the compiler, right-click Project in the Solution Explorer Window, and > Parallel Composer> Use Intel C++. Then the option will work.

If you want to work with MS compiler, then go to Properties>C/C++>Advanced>Compile As , and set as C++ code (/TP) option, and it will work, for icl as welll as cl. Hope it works in your case too.

[gib]

I was just about to say "Do you think I'm stupid?" then I checked and found that I am! I didn't even realize that I had MSVC installed - this is my first foray into C for a few years.

Thanks.

[Milind_Kulkarni__Int]

:) yes, you need to integrate the Intel Compiler to MSVS , if you have not already done. And check whether you can switch to Intel compiler in Visual Studio.

[gib]

Yes, it was a single button click to switch MSVS over to Intel C++. I'm still amazed that I hadn't noticed that the compilation was not using the Intel compiler.