Is this the correct way of defining GLES_VERSION ?? I m getting #error in my program
c++ code
#if GLES_VERSION == 2
#include <GLES2/gl2.h>
#elif GLES_VERSION == 3
#include <GLES3/gl3.h>
#else
#error "GLES_VERSION must be defined as either 2 or 3"
#endif
i m ending up here in #error
make file code
CXXFLAGS = -O2 -g -Wall -fmessage-length=0
OBJS = hello.o
LIBS = -lX11 -lXau -lEGL -lGLESv2 -lm
GLES_VERSION = -D2 #is this correct ?
TARGET = hello \
$(TARGET): $(OBJS)
$(CXX) -o $(TARGET) $(GLES_VERSION) $(OBJS) $(LIBS)
all: $(TARGET)
clean:
rm -f $(OBJS) $(TARGET)
It should be
GLES_VERSION = -DGLES_VERSION=2
it must be,
GLES_VERSION = -DGLES_VERSION=2
Related
I have a c project and I'm trying to link the C binding for imgui to it using Makefiles but I'm having some trouble. I've already generated the .dll using cmake in a build folder, these are the contents of it:
C:\path\to\cimgui\build:
-CMakefiles
-cimgui.dll
-cmake_install.txt
-CMakeCache.txt
-libcimgui.dll.a
-Makefile
and this is my makefile
PROJ := proj
TARGET := $(PROJ)
OBJ := sub.o main.o
INCLUDE_PATH := -IC:\path\to\SDL2 -IC:\path\to\cimgui
LIB_PATH := -LC:\path\to\SDL2\lib -LC:\path\to\cimgui\build
LINKER_FLAGS := -lSDL2 -lopengl32 -lcimgui -lcimgui.dll
CFLAGS := $(INCLUDE_PATH)
.PHONY : build clean
build : $(TARGET).exe
$(TARGET).exe: $(OBJ)
gcc $^ $(LIB_PATH) $(LINKER_FLAGS) -o $#
sub.o: sub.c sub.h
gcc -c $(CFLAGS) $< -o $#
main.o: main.c sub.h
$(CC) $(CFLAGS) $< -o $#
clean :
#rm -fv *.o
#rm -fv *.exe
and this is my main.c project
#define CIMGUI_DEFINE_ENUMS_AND_STRUCTS
#include "cimgui.h"
#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
#include <SDL_opengl.h>
int main(int argc, char ** argv)
{
return 0;
}
This is the error I get when i try to compile my makefile:
c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lcimgui.dll
I did try to compile a OpenCV-Project with MinGW (under Windows 10). The OpenCV-library had compiled without problem and I try to do couple of test.
main3.cpp
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgcodecs/imgcodecs.hpp"
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char** argv)
{
Mat im = imread(argc == 2 ? argv[1] : "lena.jpg", 1);
if (im.empty())
{
cout << "Cannot open image!" << endl;
return -1;
}
imshow("image", im);
waitKey(0);
return 0;
}
I have follows Makefile:
# Project: Proj400-v3
# Makefile created by Dev-C++ 5.11
CPP = g++.exe
CC = gcc.exe
WINDRES = windres.exe
OBJ = obj/main3.o
LINKOBJ = obj/main3.o
LIBS = -L"C:/RD/TMP/Dev-Cpp/MinGW64/lib32" -L"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/lib" -lopencv_core400 -lopencv_imgcodecs400 -lopencv_highgui400 -m32
INCS = -I"C:/RD/TMP/Dev-Cpp/MinGW64/include" -I"C:/RD/TMP/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/RD/TMP/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/inc" -I"C:/RD/TMP/Work/entw/OCV-SVD/proj4.0.0.0"
CXXINCS = -I"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/inc" -I"C:/RD/TMP/Work/entw/OCV-SVD/proj4.0.0.0"
BIN = obj/Proj400-v3.exe
CXXFLAGS = $(CXXINCS) -m32 -std=c++11 -lopencv_core400 -lopencv_imgcodecs400 -lopencv_highgui400
CFLAGS = $(INCS) -m32
RM = rm.exe -f
.PHONY: all all-before all-after clean clean-custom
all: all-before $(BIN) all-after
clean: clean-custom
${RM} $(OBJ) $(BIN)
$(BIN): $(OBJ)
$(CPP) $(LINKOBJ) -o $(BIN) $(LIBS)
obj/main3.o: main3.cpp
$(CPP) -c main3.cpp -o obj/main3.o $(CXXFLAGS)
All compiled and linked without mistakes nad run fine. I try to expand the test with new file 'second3.cpp'.
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/imgproc/imgproc_c.h>
extern "C" {
}
New the Makefile:
# Project: Proj400-v3
# Makefile created by Dev-C++ 5.11
CPP = g++.exe
CC = gcc.exe
WINDRES = windres.exe
OBJ = obj/main3.o obj/second3.o
LINKOBJ = obj/main3.o obj/second3.o
LIBS = -L"C:/RD/TMP/Dev-Cpp/MinGW64/lib32" -L"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/lib" -lopencv_core400 -lopencv_imgcodecs400 -lopencv_highgui400 -m32
INCS = -I"C:/RD/TMP/Dev-Cpp/MinGW64/include" -I"C:/RD/TMP/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"C:/RD/TMP/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/inc" -I"C:/RD/TMP/Work/entw/OCV-SVD/proj4.0.0.0"
CXXINCS = -I"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/inc" -I"C:/RD/TMP/Work/entw/OCV-SVD/proj4.0.0.0"
BIN = obj/Proj400-v3.exe
CXXFLAGS = $(CXXINCS) -m32 -std=c++11 -lopencv_core400 -lopencv_imgcodecs400 -lopencv_highgui400
CFLAGS = $(INCS) -m32
RM = rm.exe -f
.PHONY: all all-before all-after clean clean-custom
all: all-before $(BIN) all-after
clean: clean-custom
${RM} $(OBJ) $(BIN)
$(BIN): $(OBJ)
$(CPP) $(LINKOBJ) -o $(BIN) $(LIBS)
obj/main3.o: main3.cpp
$(CPP) -c main3.cpp -o obj/main3.o $(CXXFLAGS)
obj/second3.o: second3.cpp
$(CPP) -c second3.cpp -o obj/second3.o $(CXXFLAGS)
After compiling I have follows list of mistakes:
- Command: mingw32-make.exe -f "C:\RD\TMP\Work\entw\OCV-SVD\proj4.0.0.0\Makefile.win" all
g++.exe obj/main3.o obj/second3.o -o obj/Proj400-v3.exe -L"C:/RD/TMP/Dev-Cpp/MinGW64/lib32" -L"C:/RD/TMP/Work/entw/OCV-SVD/ocv4.0.0/lib" -lopencv_core400 -lopencv_imgcodecs400 -lopencv_highgui400 -m32
obj/main3.o:main3.cpp:(.text+0xc3): undefined reference to `cv::imread(std::string const&, int)'
obj/main3.o:main3.cpp:(.text+0x181): undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)'
collect2.exe: error: ld returned 1 exit status
C:\RD\TMP\Work\entw\OCV-SVD\proj4.0.0.0\Makefile.win:25: recipe for target 'obj/Proj400-v3.exe' failed
mingw32-make.exe: *** [obj/Proj400-v3.exe] Error 1
Can some body explane me, what is wrong? Why with one source in the project it work fine und with many files in the project I have 'undefined reference'?
PS: If I change the project from two source-files to one-source, but do not remove the obj/second3.o, I have again problem with 'undefined reference'.
I made a project split in three folders : src, include, obj
I am using CImg.h and cuda.h library.
I declare void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &);in convolve.h
and define it in convolve.cu
my files :
main.cpp :
#include "CImg.h"
#include "../include/convolve.h"
using namespace cimg_library;
int main(){
CImg<float> var1("/*path*/");
CImg<float> var2("/*path2*/");
convolve(var1,var2);
//some code
}
convolve.h :
1 #ifndef CONVOLVE_H
2 #define CONVOLVE_H
//some define
10 void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &);
11 #endif //CONVOLVE_H
convolve.cu :
1 void convolve(CImg<float>& img, const CImg<float>& kernel){
//some code
24 kernel<<<dimGrid,dimBlocks>>>(/*some arg*/);
}
and my new makefile :
1 CC=nvcc
2 CX=g++
3 IDIR =../include
4 special_IDIR = /usr/local/cuda-9.0/include
5 LDIR = /usr/local/cuda-9.0/lib64
6 CFLAGS=-I$(special_IDIR) -L$(LDIR)
7
8 LIBS = -lX11 -lpthread -lcudart
9 ODIR = ../obj
10
11
12 _DEPS = convolve.h kernel.cuh
13 DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
14
15 _OBJ = main.o convolve.o kernel.o
16 OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
17
18 $(ODIR)/%.o: %.cpp $(DEPS)
19 $(CX) -x c++ -o $# $< $(CFLAGS) $(LIBS)
20
21 $(ODIR)/%.o: %.cu $(DEPS)
22 $(CC) -cu -o $# $< $(CFLAGS)
23
24 all: $(OBJ)
25 $(CC) -o $# $^ $(CFLAGS)
26
27
28 .PHONY: clean
29
30 clean:
31 rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~
Here is my issue : it says the reference to void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &) is undefined.
I think this is because I never clearly say to the compiler that the definition of convolve is in convolve.cu. But I do not find how to make this link properly.
Thanks for your help !
please don't post code (or Makefile contents) with line numbers. It just gets in the way, usually.
The compilation process here follows a compile...link process. The first stage is the compile stage, and you should be using -c for both g++ and nvcc during this stage (i.e. for both types of Makefile targets)
nvcc has no -cu option. I think maybe you meant -x cu
I also removed the ampersands on the function call.
Here is a simplified example based on what you have shown, primarily removing the CImg stuff and some other unnecessary items:
$ cat main.cpp
#include "convolve.h"
int main(){
int var1 = 0;
int var2 = 1;
convolve(var1, var2);
}
$ cat convolve.h
void convolve(int &, int &);
$ cat convolve.cu
#include "convolve.h"
__global__ void kernel(){};
void convolve(int & i1, int & i2){
kernel<<<1,1>>>();
}
$ cat Makefile
CC=nvcc
CX=g++
IDIR = .
special_IDIR = /usr/local/cuda-9.1/include
LDIR = /usr/local/cuda-9.1/lib64
CFLAGS=-I$(special_IDIR) -L$(LDIR)
LIBS =
ODIR = .
_DEPS = convolve.h
DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
_OBJ = main.o convolve.o
OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
$(ODIR)/%.o: %.cu $(DEPS)
$(CC) -c -x cu -o $# $< $(CFLAGS)
$(ODIR)/%.o: %.cpp $(DEPS)
$(CX) -c -x c++ -o $# $< $(CFLAGS) $(LIBS)
all: $(OBJ)
$(CC) -o $# $^ $(CFLAGS)
.PHONY: clean
clean:
rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~
$ make clean
rm -f ./*.o *~ core /*~
$ make
g++ -c -x c++ -o main.o main.cpp -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
nvcc -c -x cu -o convolve.o convolve.cu -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
nvcc -o all main.o convolve.o -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
$
change the instances of cuda-9.1 to cuda-9.0 in the above Makefile if you have CUDA 9.0 in your setup. The linker libs (-L) are not really needed for the compile commands, however. When linking with nvcc as we are doing here, it's also unnecessary to pass the -I and -L switches that refer to the CUDA includes and CUDA libraries that are part of the toolkit. nvcc already knows how to find those.
There may be any number of additional recommendations or tweaks to the Makefile, for instance the -x cu and -x c++ switches are probably unnecessary (at least they are unnecessary for my simplified example) but my objective here is not to create the perfect Makefile, but to give you a roadmap to get past the issue you are currently witnessing.
I made a project split in three folders : src, include, obj
I am using CImg.h and cuda.h library.
I declare void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &);in convolve.h
and define it in convolve.cu
my files :
main.cpp :
#include "CImg.h"
#include "../include/convolve.h"
using namespace cimg_library;
int main(){
CImg<float> var1("/*path*/");
CImg<float> var2("/*path2*/");
convolve(var1,var2);
//some code
}
convolve.h :
1 #ifndef CONVOLVE_H
2 #define CONVOLVE_H
//some define
10 void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &);
11 #endif //CONVOLVE_H
convolve.cu :
1 void convolve(CImg<float>& img, const CImg<float>& kernel){
//some code
24 kernel<<<dimGrid,dimBlocks>>>(/*some arg*/);
}
and my new makefile :
1 CC=nvcc
2 CX=g++
3 IDIR =../include
4 special_IDIR = /usr/local/cuda-9.0/include
5 LDIR = /usr/local/cuda-9.0/lib64
6 CFLAGS=-I$(special_IDIR) -L$(LDIR)
7
8 LIBS = -lX11 -lpthread -lcudart
9 ODIR = ../obj
10
11
12 _DEPS = convolve.h kernel.cuh
13 DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
14
15 _OBJ = main.o convolve.o kernel.o
16 OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
17
18 $(ODIR)/%.o: %.cpp $(DEPS)
19 $(CX) -x c++ -o $# $< $(CFLAGS) $(LIBS)
20
21 $(ODIR)/%.o: %.cu $(DEPS)
22 $(CC) -cu -o $# $< $(CFLAGS)
23
24 all: $(OBJ)
25 $(CC) -o $# $^ $(CFLAGS)
26
27
28 .PHONY: clean
29
30 clean:
31 rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~
Here is my issue : it says the reference to void convolve(cimg_library::CImg<float>&, cimg_library::CImg<float> const &) is undefined.
I think this is because I never clearly say to the compiler that the definition of convolve is in convolve.cu. But I do not find how to make this link properly.
Thanks for your help !
please don't post code (or Makefile contents) with line numbers. It just gets in the way, usually.
The compilation process here follows a compile...link process. The first stage is the compile stage, and you should be using -c for both g++ and nvcc during this stage (i.e. for both types of Makefile targets)
nvcc has no -cu option. I think maybe you meant -x cu
I also removed the ampersands on the function call.
Here is a simplified example based on what you have shown, primarily removing the CImg stuff and some other unnecessary items:
$ cat main.cpp
#include "convolve.h"
int main(){
int var1 = 0;
int var2 = 1;
convolve(var1, var2);
}
$ cat convolve.h
void convolve(int &, int &);
$ cat convolve.cu
#include "convolve.h"
__global__ void kernel(){};
void convolve(int & i1, int & i2){
kernel<<<1,1>>>();
}
$ cat Makefile
CC=nvcc
CX=g++
IDIR = .
special_IDIR = /usr/local/cuda-9.1/include
LDIR = /usr/local/cuda-9.1/lib64
CFLAGS=-I$(special_IDIR) -L$(LDIR)
LIBS =
ODIR = .
_DEPS = convolve.h
DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
_OBJ = main.o convolve.o
OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
$(ODIR)/%.o: %.cu $(DEPS)
$(CC) -c -x cu -o $# $< $(CFLAGS)
$(ODIR)/%.o: %.cpp $(DEPS)
$(CX) -c -x c++ -o $# $< $(CFLAGS) $(LIBS)
all: $(OBJ)
$(CC) -o $# $^ $(CFLAGS)
.PHONY: clean
clean:
rm -f $(ODIR)/*.o *~ core $(INCDIR)/*~
$ make clean
rm -f ./*.o *~ core /*~
$ make
g++ -c -x c++ -o main.o main.cpp -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
nvcc -c -x cu -o convolve.o convolve.cu -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
nvcc -o all main.o convolve.o -I/usr/local/cuda-9.1/include -L/usr/local/cuda-9.1/lib64
$
change the instances of cuda-9.1 to cuda-9.0 in the above Makefile if you have CUDA 9.0 in your setup. The linker libs (-L) are not really needed for the compile commands, however. When linking with nvcc as we are doing here, it's also unnecessary to pass the -I and -L switches that refer to the CUDA includes and CUDA libraries that are part of the toolkit. nvcc already knows how to find those.
There may be any number of additional recommendations or tweaks to the Makefile, for instance the -x cu and -x c++ switches are probably unnecessary (at least they are unnecessary for my simplified example) but my objective here is not to create the perfect Makefile, but to give you a roadmap to get past the issue you are currently witnessing.
I try to initialize a global variable with the output of a function. It works as expected for gnu-gcc, but when compiled with avr32-gcc, the variable is initialized with 0. I want the variable to be initialized by a function since in the real scenario it is a reference (MyClass& myclass = MyClass::getInstance().
Here is the code:
extern "C"
{
#include "led.h"
}
int getInteger()
{
return 10;
}
int my_int = getInteger();
int main (void)
{
LED_On(LED2);
//my_int = getInteger(); //* This line really sets my_int = 10;
if(my_int == 10)
{
LED_On(LED1);
}
while(1){
__asm__ ("nop");
}
return 0;
}
and here is my Makefile:
PROJ_NAME=TEST
# Include paths for project folder
SRCS_INC += -I. -I./preprocessor
# Sources files for project folder (*.c and *.cpp)
SRCS += main.cpp exception_noNMI.S startup_uc3.S trampoline_uc3.S intc.c led.c
AS = avr32-gcc
ASFLAGS = -x assembler-with-cpp -c -mpart=uc3c1512c -mrelax
ASFLAGS += ${SRCS_INC}
CC = avr32-gcc
CFLAGS += -mpart=uc3c1512c
CFLAGS += ${SRCS_INC}
CXX = avr32-g++
LINKER = avr32-g++
OBJCOPY = avr32-objcopy
LDFLAGS = -nostartfiles -mpart=uc3c1512c
LDFLAGS += ${SRCS_INC}
OBJS += $(addsuffix .o, $(basename $(SRCS)))
# Main rule
all: $(PROJ_NAME).elf
# Linking
${PROJ_NAME}.elf: ${OBJS}
#echo Linking...
#$(CXX) $(LDFLAGS) $^ -o $#
#$(OBJCOPY) -O ihex ${OBJCOPYFLAGS} $(PROJ_NAME).elf $(PROJ_NAME).hex
#$(OBJCOPY) -O binary $(PROJ_NAME).elf $(PROJ_NAME).bin
# Assembly files in source folder
%.o: ./%.S
#mkdir -p $(dir $#)
#$(AS) $(ASFLAGS) -c $< -o $#
# C files in source folder
%.o: ./%.c
#mkdir -p $(dir $#)
#$(CC) -c $< -o $# $(CFLAGS)
# CPP files in SRC folder
%.o: ./%.cpp
#mkdir -p $(dir $#)
#$(CXX) -c $< -o $# $(CFLAGS)
.PHONY: clean
clean:
#rm -f $(OBJS) $(PROJ_NAME).elf $(PROJ_NAME).hex $(PROJ_NAME).bin
I also tried to make an init function with __attribute(constructor) as explained in this answer.
Still it is not excuted.
As far as I can see, you're not having optimization enabled. Thus, the compiler may actually make a call to getInteger during startup. Now, you're replacing the default startup with something that you do not show. Maybe you just need to make sure that this is done during startup? Also, you could try to enable optimization and see if the call is resolved.