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I see the following error when compiling...
./src/gettext.h:17:22: fatal error: libintl.h: No such file or directory
So I look at the code and see...
#ifndef NO_GETTEXT
# include <libintl.h>
#else
# ifdef gettext
# undef gettext
# endif
# define gettext(s) (s)
# ifdef ngettext
# undef ngettext
# endif
# define ngettext(s, p, n) ((n == 1) ? (s) : (p))
#endif
I add a file called config.h which I add the following....
#define NO_GETTEXT
But it doesn't seem to have defined it because I still see the error. I am rather new to C so I am not sure what is up. Any help?
Oops should be...
LOCAL_CFLAGS := -DNO_GETTEXT
in my MakeFile
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How can I solve the error: unterminated #ifndef when am trying to use header files with my defined functions in C ?
In file included from test.c:1:
main.h:1: error: unterminated #ifndef
1 | # ifndef _MAIN_H_
|
this is the code
# ifndef _MAIN_H_
# ifdef _MAIN_H_
int now(void);
# endif
~
I though #endif solves it all but failed.
The #ifdef should be a #define for you to have working #include guard. As originally written the #ifndef is missing the matching #endif.
Symbols that start with underscore followed by an uppercase letter are reserved (6.4.2.1). Use MAIN_H instead.
You could also use #pragma once which is a non-standard, but widely supported, alternative to the include guard.
Leave out the ~ of the code listing as it's vi's EOF marker and not part of your header file.
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Im trying to program a open file dialog in C. I dont want to use any gui projects.
It seems there's XORG and wayland so I'm guessing I need to implement open file dialog for both of those.
So far my program looks like this
#ifdef _WIN32
OPENFILENAME ofd;
memset(&ofd,0,sizeof(ofd));
ofd.lStructSize = sizeof(ofd);
ofd.lpstrFile = filename;
ofd.nMaxFile = MAX_PATH;
ofd.Flags = OFN_FILEMUSTEXIST;
#endif
#ifdef __linux__
#endif
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I am trying to read all the content of a .c file and print out in another .o file all the source code of the first file, replacing all the #include <....> in this way:
Input: #include<string.h>
Ouput: "string.h"
I have to work in pure C, without the chance to use any C++ libraries
Can someone please help me with this issue?
A simple sed on your file maybe?
sed 's/.*#include *\(<|"\)\(.*\)\(>|"\).*/"\2"/' < input.c > output.o
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I want to pass directory of Makefile to a function.
For example:
Makefile
$(DIR) = makefile directory
program
int main(int argc,char argv[])
char directory = argv[1]
How can I do that?
EDIT
Clarificaion. I want my app to work outside of the directory that i compiled it in.
Passing a symbol at compile time is done with the -D option
(example is C++ but you can transpose to C easily). You can either only define the symbol, or give it a value (which is what you want here).
DIR=$(shell pwd)
mytarget:
#echo "DIRECTORY=$(DIR)"
$(CXX) mysource.cpp -D"DIRECTORY=$(DIR)" -o mysource
Then, in your source file, the symbol DIRECTORY will hold the path. To check this, you need an additional trick (known as "double expansion"):
#define STR1(x) #x
#define STR(x) STR1(x)
#include <iostream>
int main()
{
std::cout << "directory is " << STR(DIRECTORY) << "\n";
}
You can check this similar question, and see here about the D flag.
In case the directory you need to pass is static (i.e. always the same) you can use the -D C compiler option:
cc -DDIRECTORY=/home/user/...
In your C source code you can then use DIRECTORY.
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I'm using LPCXpresso (Eclipse) that is building C code for some MCU.
Is there some magic feature (plugin) that I can use to automatic increment a define?
#define BUILD_NUMBER 1252 // auto increment at each build
Few years ago I wrote some simple exec for doing that on older IDEs (pre build events) but there may be a simpler solution now.
Thank you in advance,
You can this to use to store your build number and create an header at a pre-build stage by makefile, eg:
#id=`cat .build_id`; id=$$[id+1]; printf "#define BUILD_NUMBER\t\t0x%08X\n" $$id >> $#; echo "$$id" > .build_id
You can also add date and time, eg:
#printf "#define BUILD_DATE\t\t0x%04X%02X%02X\n" `date +"%-Y %-m %-d"` >> $#;
#printf "#define BUILD_TIME\t\t0x%02X%02X%02X\n" `date +"%-H %-M %-S"` >> $#;