I am extremely new to programming and I am having problems with the basic starting program of, ‘hello, world’. I have downloaded MinGW and I believe I set it up correctly with the command promt by entering: setx PATH “%PATH%;C:\MinGW\bin” Then I created this code following a guide while using Notepad++ saving it under c:/code/c/hello.c … Read more
Try setting C_INCLUDE_PATH (for C header files) or CPLUS_INCLUDE_PATH (for C++ header files). As Ciro mentioned, CPATH will set the path for both C and C++ (and any other language). More details in GCC’s documentation.
It indicates it couldn’t find gcc.exe. I have a path environment variable set to where MinGW is installed Maybe you haven’t set the path correctly? shows the path to gcc.exe? Otherwise, compilation is similar to Unix:
The -Wl,xxx option for gcc passes a comma-separated list of tokens as a space-separated list of arguments to the linker. So eventually becomes a linker call In your case, you want to say “ld -rpath .“, so you pass this to gcc as -Wl,-rpath,. Alternatively, you can specify repeat instances of -Wl: Note that there is no comma between aaa and the second -Wl. Or, in … Read more
It’s the array that’s causing trouble in: The second and subsequent dimensions must be given: Or you can just give a pointer to pointer: However, although they look similar, those are very different internally. If you’re using C99, you can use variably-qualified arrays. Quoting an example from the C99 standard (section §6.7.5.2 Array Declarators): Question … Read more
I think you are confused about how the compiler puts things together. When you use -c flag, i.e. no linking is done, the input is C++ code, and the output is object code. The .o files thus don’t mix with -c, and compiler warns you about that. Symbols from object file are not moved to other object files like that. All object … Read more
From what the error message complains about, it sounds like you should rather try to fix the source code. The compiler complains about difference in declaration, similar to for instance and this is not valid C code, hence the compiler complains. Maybe your problem is that there is no prototype available when the function is … Read more
Use -l: instead of -l. For example -l:libXYZ.a to link with libXYZ.a. Notice the lib and .a are written out, as opposed to -lXYZ which would auto-expand to libXYZ.so/libXYZ.a. It is an option of the GNU ld linker: -l namespec … If namespec is of the form :filename, ld will search the library path for a file called filename, otherwise it will search the library path for a file called libnamespec.a. … on ELF … systems, ld will search a directory … Read more
Ok my edit solved the problem: placing a dash – in front of include hides the error messages coming from the dependency generation. Note for later: don’t try to outsmart Make.
The typedef would be However, this is probably a very bad idea, because the resulting type is an array type, but users of it won’t see that it’s an array type. If used as a function argument, it will be passed by reference, not by value, and the sizeof for it will then be wrong. A better … Read more