Gcc compiler not finding header files

This is a discussion on Gcc compiler not finding header files within the C Programming forums, part of the General Programming Boards category; I dont know if this is the right place to post this but... Basicaly, i cant compile a simple program ...

  1. #1
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    Gcc compiler not finding header files

    I dont know if this is the right place to post this but...

    Basicaly, i cant compile a simple program like:
    Code:
    #include <stdio.h>
    
    int main() {
    	printf("Hello world");
    }
    using the Mingws gcc c compiler, it just says that:
    main.c:1: No include path in which to find stdio.h

    i even tried to reinstall mingw with only the gcc compiler, but same error.

    i can use a c++ compiler to compile it, but i really need the c compiler atm :\
    any sugestions?

  2. #2
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    You likely have an bad MinGW GCC installation.
    What folder/path is the MinGW installation in?
    Does the file "stdio.h" exist under that path in a sub-folder?

    NOTE: If you have multiple MinGW GCC installed; you MUST not have one installed in X:\mingw for any drive letter in place of X.

    Tim S.

  3. #3
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    Quote Originally Posted by stahta01 View Post
    You likely have an bad MinGW GCC installation.
    What folder/path is the MinGW installation in?
    Does the file "stdio.h" exist under that path in a sub-folder?

    NOTE: If you have multiple MinGW GCC installed; you MUST not have one installed in X:\mingw for any drive letter in place of X.
    My path is D:\utils\mingw32
    Its unlikely that i have a bad install of mingw, as i tried reinstaling it 2 times already ( and i also tried on the d:\mingw path)
    and yes, stdio.h exists in the mingw/include folder :\

  4. #4
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    Open an Command prompt (cmd.exe)
    Type in the following command; what version do you have?
    Code:
    gcc -v
    Mine is
    Code:
    gcc version 4.4.1 (TDM-2 mingw32)
    What does this return?

    Code:
    gcc -print-search-dirs
    My result is this; the mingw base folder is "c:\greenapps\mingw_gcc4_4x_sjlj_tdm"

    Code:
    install: c:\greenapps\mingw_gcc4_4x_sjlj_tdm\bin\../lib/gcc/mingw32/4.4.1/
    programs: =c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../libexec/gcc/mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../libexec/gcc/;/usr/libexec/gcc/mingw32/4.4.1/;/usr/libexec/gcc/mingw32/;/usr/lib/gcc/mingw32/4.4.1/;/usr/lib/gcc/mingw32/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../../mingw32/bin/mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../../mingw32/bin/
    libraries: =c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/;/usr/lib/gcc/mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../../mingw32/lib/mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../../mingw32/lib/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../mingw32/4.4.1/;c:/greenapps/mingw_gcc4_4x_sjlj_tdm/bin/../lib/gcc/mingw32/4.4.1/../../../;/mingw/lib/mingw32/4.4.1/;/mingw/lib/
    Note: The "install:" part is the important part for solving this problem.

    Tim S.
    Last edited by stahta01; 07-08-2011 at 11:24 AM.

  5. #5
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    Quote Originally Posted by shiroaisu View Post
    ( and i also tried on the d:\mingw path)
    Delete or rename the folder MinGW on the D drive or delete all other MinGW installations.

    Tim S.

  6. #6
    Registered User ssharish2005's Avatar
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    Try adding the include search path to directory. You could do this by
    Code:
    gcc -B <directory>
    This will be included to the list of search paths which the compiler will look for.

    ssharish
    Life is like riding a bicycle. To keep your balance you must keep moving - Einstein

  7. #7
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    Gee... did anyone happen to notice all those "wrong way" slashes in there?

    Unless MinGw does something internally to fix them, that's not going to work on any windows install...

    (Since I know this will come up... Yes, Win Vista and 7 will correct slashes for the UI elements of it's own browsers, but no version will fix broken environment variables)

  8. #8
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    Except of course, every Windows version (including MS-DOS) will correct forwards to backwards when passed to any file opening functions. Until they get there, it's just aesthetics. The only time it matters is if you call the Nt* file functions yourself, and no sane person not writing a driver does that.

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