RE: [Dev-C++] Reading GCC output

[Brian C. B. <bcb...@ya...>]

Hi,
   I apologize for not being clear. I am coding a small IDE that invokes the
GCC compiler, just like Dev-C++ does. Dev-C++ catches the output produced by
GCC and displays the errors, warnings, and other GCC output at the bottom of
the program. I would like to know how to do just that: invoke GCC from my
program, catch the output, and display it. I know how to invoke GCC and
display any output, but I do not know how to catch the output. Could someone
point me in the right direction? Thanks in advance.

Sincerely,
Brian

"Shall we accept good from God, and not trouble?"  Job 2:10
 -----Original Message-----
From: dev...@li...
[mailto:dev...@li...]On Behalf Of Steve D.
Perkins
Sent: Monday, June 18, 2001 1:10 PM
To: dev...@li...
Subject: Re: [Dev-C++] Reading GCC output


      Umm... write a program called 'foo.cpp', compile it to form 'foo.exe',
go to a command-prompt and type:

  c:\YourDir\foo.exe > YourOutputFile.txt

      "Piping" isn't something you do at compile-time, it's something you do
at run-time... to direct an application's input and/or output to or from a
location other than it was coded for at compile-time.

  Cheers,
  Steve


    ----- Original Message -----
    From: Brian C. Becker
    To: devcpp
    Sent: Monday, June 18, 2001 12:03 PM
    Subject: [Dev-C++] Reading GCC output


    Hi,
    I am trying to read the output of the gcc compiler like Bloodshed
Dev-C++ does and am not being successful. I tried looking in the online gcc
manual for command line options that might direct the output into a file,
but did not find such an option. I also read that gcc uses temp files to
communicate between the compiler, assembler, linker, etc, but could not find
any information on how to find those files to read them. I also tried the
using the "-pipe" command and that did not work;  I also tried the following
code to pipe the output into my program. It works for other console programs
but outputs garbage when I try to read the output of gcc (perhaps because
gcc calles other proccesses? ):

    long i;
    HANDLE rh;
    HANDLE wh;
    STARTUPINFO stinfo;
    PROCESS_INFORMATION pinfo;
    DWORD bytesread;
    char buf[65536];
    SECURITY_ATTRIBUTES sattr;
    akostring output;
    HANDLE oldwh;
        ZeroMemory(&sattr, sizeof(SECURITY_ATTRIBUTES));
     sattr.nLength = sizeof(SECURITY_ATTRIBUTES);
     sattr.lpSecurityDescriptor = 0;
     sattr.bInheritHandle = true;
    CreatePipe(&rh, &wh, &sattr, 0);
    oldwh = GetStdHandle(STD_OUTPUT_HANDLE);
    SetStdHandle(STD_OUTPUT_HANDLE, wh);
        ZeroMemory(&stinfo, sizeof(STARTUPINFO));
     stinfo.cb = sizeof(STARTUPINFO);
     stinfo.lpReserved = 0;
     stinfo.lpReserved2 = 0;
     stinfo.cbReserved2 = 0 ;
     stinfo.lpDesktop = 0;
     stinfo.lpTitle = 0;
        stinfo.dwFlags = STARTF_USESHOWWINDOW;
        stinfo.wShowWindow = SW_HIDE;
    if(!CreateProcess(0, "C:\\WINDOWS\\TEMP\\AkoClass\\compiler\\bin\\g++
\"C:\\WINDOWS\\TEMP\\AKOCLASS\\OUTPUT.cpp\" -c -s -mwindows -O1 -O3 -fexpens
ive-optimizations -IC:\\WINDOWS\\TEMP\\AkoClass\\compiler\\INCLUDE\\ -IC:\\W
INDOWS\\TEMP\\AkoClass\\compiler\\INCLUDE\\G__~1 -IC:\\WINDOWS\\TEMP\\AkoCla
ss\\compiler\\INCLUDE\\ -LC:\\WINDOWS\\TEMP\\AkoClass\\compiler\\LIB\\ -BC:\
\WINDOWS\\TEMP\\AkoClass\\compiler\\BIN", 0, 0, false,  CREATE_NEW_CONSOLE |
NORMAL_PRIORITY_CLASS, 0,0, &stinfo, &pinfo)){
    MessageBox(0,"Error","Failed",0);
    }
        else{
        WaitForSingleObject(pinfo.hProcess, INFINITE );
     CloseHandle(wh);
     SetStdHandle(STD_OUTPUT_HANDLE, oldwh);
     output = "";
    ReadFile(rh, &buf, 65536, &bytesread, NULL);
      output = (char*) &buf;
        CloseHandle(pinfo.hProcess);
        CloseHandle( pinfo.hThread );
    }
    //Note: akostring is a string class.
    // output now contains garbage or nothing

    Could anybody help me with this problem? Thanks in advance.

    Sincerely,
    Brian

    "Shall we accept good from God, and not trouble?"  Job 2:10



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