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error: ‘snprintf’ was not declared in this scope
Posted: Tue Nov 22, 2016 2:25 pm
by JohnHolmes
Hoi,
I am not able to get it working
,
Includes:
Code: Select all
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
//#include <cstdio>
#include <kos.h>
Currently using the default path set by KOS but have also tried the absolute for stdio in newlib 2.0 but no difference.
Makefile
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main.elf: $(OBJS)
$(KOS_CC) $(KOS_CFLAGS) $(KOS_LDFLAGS) -o $@ $(KOS_START) $^ -lkmg -lkosutils -lstdc++ -lm $(KOS_LIBS)
Any suggestions ?
Re: error: ‘snprintf’ was not declared in this scope
Posted: Tue Nov 22, 2016 6:37 pm
by Nokurn
Are you using C or C++? Your includes are for C headers (with a C++ header commented out). In your makefile, you're using KOS_CC, which should be a C compiler (vs. KOS_CXX), but you're linking with the C++ standard library (-lstdc++). If you're using C++ you might want to try std::snprintf instead (or put using namespace std; after your includes). The compiler is passing the preprocessor stage since you're getting semantic analysis errors, so your include statements are working. It's not a linker error, although I suspect your linking isn't all there. Other than that, it's hard to say. You could see if snprintf's declaration is being preprocessed out with #ifndef/#ifdef/#if directives in stdio.h.
Re: error: ‘snprintf’ was not declared in this scope
Posted: Wed Nov 23, 2016 4:37 pm
by JohnHolmes
Thank you for the reply!
c++.
I feel like neo when he took the pill..(going from ms vs to vim and having to setup everything)
changed the makefile to kos_cpplus, still complaining, tried both the default cstdio and the one in global, same thing.
and then....... in environ from export KOS_CPPFLAGS="-std=c++11" to export KOS_CPPFLAGS="-std=gnu++11", and my life is complete.
