In modern C, header files are crucial tools that must be designed and used correctly. They allow the compiler to cross-check independently compiled parts of a program.
Questions tagged [c-header]
34 questions
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XCode 13, cannot add a search path for .h files
I'm having trouble adding raylib.h to my project in Xcode 13.
The website gives the following instructions:
Make sure Xcode finds raylib.h: Go to
Build Settings > Search Paths
and add raylib header folder (raylib-master/src) to Header Search…
Light Love Peace
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0
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1 answer
how to use gcc to preprocess header only for #ifdef, not for #include and #defines
I have to preprocess a header, during this I want to only process the header for #ifdef, #if defined sections, other sections like Macro expansion and #include sections should not be expanded or checked. how to get this? I need to pass this output…
0
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2 answers
how to not include certain functions in a header file for use in C programing
To paint the picture let's imagine we have a header called headertest.h and where going to use it in a file called test.c
It's context look like this
#include
extern size_t string_lenght(const char *);
size_t string_lenght(const char…
user19139723
0
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0 answers
What does __kernel_size_t data type in C header file mean?
I was looking thought the string.h header file when I found a data type called __kernel_size_t.
I couldn't find anything of interest about it's meaning so I'm asking here.
I'm running linux and it's location is…
user19139723
0
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0 answers
python c api with multiple file
While writing python c api, I wanted to separate it into multiple files.
So, I separated the files (module.cpp and support.cpp) and wrote the function declarations in the separate files (support.h).
But how to write setup.py?
├── cpp
│ ├──…
tsp
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- 7
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0 answers
Can't pass array stored in .h file to C function
I am trying to implement a driver for a sensor(ST-VL53L5CX) on an AVR MCU (AVR128DB48).
The driver comes prewritten, with a few I2C functions for the user to fill in
(So the sensor can be implemented on different platforms).
The driver is made up of…
D_A
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- 1
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1 answer
Use typedef struct in another file in C
Hello, I'm new to C.
I want to "export" and use a typedef struct in other files but it seems that it doesn't works a lot.
I have those kind of errors
unknown type name 'CAN_frame'
storage size of 'CAN_RxMessage' isn't known
invalid use of undefined…
Gabriel
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1 answer
How To Include Header Files In C
I don't know how to include my own header files in my source file.
I declare addition in my header file(myhead.h):
int addition(int a, int b);
In the source file I define it(myhead.c):
int addition(int a, int b){
return a+b;
}
In the third…
bunderbah
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- 4
0
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2 answers
gcc "undefined reference to"
I'm having trouble finding why my program wont compile. Im not very good at C so I hope someone can spot my error. I was told it was probably a header issue, that is why I'm starting with this. This is the…
Ceeerson
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- 8
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1 answer
Compile C with subdirectory based on compiler constant
I want to make a program which includes source files and header files from a sub-directory in addition to the main directory. The name of the sub-directory, and parts of the filenames themselves need to be chosen with a compiler constant. Here's an…
CatOnAKeyboard
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- 1
0
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1 answer
Is it possible to manage indirect .h dependencies with 'touch' command?
It is advised to use -MM option to manage indirect dependencies in headers. Why we don't use touch command. Am I missing anything here, or just it's because it's a hack and we want to keep the real last modification of timestamp (look like intrusive…
rafoo
- 1,506
- 10
- 17
0
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1 answer
Form C header file "'vector' file not found" error happening into swift
I am trying to integrate an Objective-C SDK into my swift file. But when I want to add some of the files from the SDK into my Bridging Header I am getting this error 'vector' file not found
I am also getting string file not found if I want to add…
Mahbubur Rashid
- 17
- 8
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votes
1 answer
C and the file
My simple program compTest.c
#include
#include
int main(void)
{
double complex z = 1.0 + 1.0 * I;
printf("|z| = %.4f\n", cabs(z));
return 0;
}
When using the standard library and compiling with gcc on a Linux…
Jay
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0
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1 answer
Cython: calling C function throws 'undefined symbol'
I am attempting to use the LMDB C API with Cython.
I want to import the following definitions from the header file:
typedef struct MDB_env MDB_env;
int mdb_env_create(MDB_env **env);
So I created a .pxd file:
cdef extern from 'lmdb.h':
…
user3758232
- 758
- 5
- 19
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3 answers
How to make a function visible through a header file in C
I have several header files in a library: header1.h, header2.h...
I also have a general header file for the library: mylib.h
I want the user to import the main.h file and get access to only some of the functions in the other header files.
For…
Octan
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