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userlib on mac and linux
Posted: Tue Sep 18, 2018 7:41 pm
by 5mware
hi guys,
i need a simple and clear description, maybe a small test-code, on how to create in c-language an user-lib for mac and linux.
how can i make this here to a userlib:
Code: Select all
int getInt()
{
return 25;
}
int getAdd( int a, int b )
{
return a + b;
}
I want to test in in PB like this simple way:
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Debug getInt()
Debug getAdd( 8, 12 )
please don't tell me from the SDK-Stuff in pb-directory. there isn't the specific files on mac or linux available. i am using pb 5.60 on both operating systems.
Re: userlib on mac and linux
Posted: Thu Sep 20, 2018 4:01 pm
by 5mware
hi guys,
did i asked something impossible?
)-:
Re: userlib on mac and linux
Posted: Thu Sep 20, 2018 4:14 pm
by NicTheQuick
Just tried it by myself the first time. It's really simple.
Create these two files:
library.h
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extern int getInt();
extern int getAdd(int a, int b);
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#include "library.h"
int getInt() {
return 25;
}
int getAdd(int a, int b) {
return a + b;
}
Compile them with gcc:
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gcc -c -Wall -Werror -fpic library.c
You will get a file named
library.o.
You can use that file directly in Purebasic with its Import command:
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ImportC "library.o"
getInt.l()
getAdd.l(a.l, b.l)
EndImport
Debug getInt()
Debug getAdd(1, 2)
The result is:
25
3
But there is one thing I am unsure about. I don't know if you have to use Import or ImportC. In the simple example above it works both ways but I don't know if that's always the case.
Re: userlib on mac and linux
Posted: Fri Sep 21, 2018 3:08 pm
by NicTheQuick
Is it working?
Re: userlib on mac and linux
Posted: Fri Sep 21, 2018 5:05 pm
by 5mware
Hi NichTheQuick,
Thank you very much for your sample. Now it's working very well.
On Linux:
gcc -c -Wall -Werror -fpic SOURCECODE.c >> Standard Output or 64Bit
gcc -m32 -c -Wall -Werror -fpic SOURCECODE.c >> 32Bit
On Mac:
gcc -dynamiclib -o LIBNAME.dylib SOURCECODE.c >> Standard Output or 64Bit
gcc -m32 -dynamiclib -o LIBNAME.dylib SOURCECODE.c >> 32Bit
I also tried g++ with .cpp-file instead of gcc, and the result is the same
now i am looking for a solution to receive string-return from a c-function or give a string as a parameter to a c function.
Re: userlib on mac and linux
Posted: Fri Sep 21, 2018 7:24 pm
by ccode
Hello 5mware,
library.c
Code: Select all
#include <stdlib.h>
//wchar_t = 2 Byte Input (Directly)
char _getChar(wchar_t Eingabe[])
{
return Eingabe[1];
}
const char * _getString(const char Inp[])
{
return Inp;
}
library.h
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extern char _getChar(wchar_t Inp[]);
extern const char * _getString(const char Inp[]);
PureBasic:
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ImportC "library.obj"
_getInt.l()
_getAdd.l(a.l, b.l)
_getChar(*str)
_getString(*str)
EndImport
Debug _getInt()
Debug _getAdd(1, 2)
Debug Chr(_getChar("Hello")) ;Return 2. Char
Debug PeekS(_getString(Ascii("Hello")),-1,#PB_Ascii) ; Ascii
Debug PeekS(_getString("Hello")) ;Unicode (2 Byte / Char ) = Standard