CLAPACK not linking - lapack

I have downloaded CLAPACK and built it according to these instructions:
http://www.netlib.org/clapack/readme.install
Everything was OK and I had no errors. I then put my three headers blaswrap.h clapack.h and f2c.h into the /usr/local/include folder.
I put the libraries blas_LINUX.a, lapack_LINUX.a and tmglib_LINUX.a into the folder /usr/local/lib64
I then try and link in my C file
#include "blaswrap.h"
#include "f2c.h"
#include "clapack.h"
When Linking I do this
-g -O3 -lm -L/usr/local/lib64
I have tried to link to the actual library like
-lcblas -llapack
And many other ways but still no luck. Any ideas what I could try?
And I get the error
fatal error: blaswrap.h: No such file or directory

Related

STM32 GNU ARM Linker: undefined reference to function() with eclipse

I am currently learning STM32F103 with Eclipse. I am facing a problem in linker stage, that I got linker error : undefined reference to `HAL_TIM_Base_Init'
Building target: TimerTest.elf
Invoking: GNU ARM Cross C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m3 -mthumb -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -Wall -Wextra -g3 -T "C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\SW4STM32\WS2812_TimerTest\STM32F103C8Tx_FLASH.ld" -Xlinker --gc-sections -L"C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Src" -L"C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Drivers\STM32F1xx_HAL_Driver\Src" -L"C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Drivers\STM32F1xx_HAL_Driver\Inc" -L"C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Inc" -Wl,-Map,"TimerTest.map" -Xlinker --cref --specs=nano.specs -o "TimerTest.elf" ./Src/WS2812.o ./Src/main.o ./Src/stm32f1xx_hal_msp.o ./Src/stm32f1xx_hal_tim.o ./Src/stm32f1xx_it.o ./Src/system_stm32f1xx.o ./Src/usb_device.o ./Src/usbd_cdc_if.o ./Src/usbd_conf.o ./Src/usbd_desc.o ./SW4STM32/startup_stm32f103xb.o ./Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.o ./Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.o ./Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.o ./Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.o ./Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.o
./Src/WS2812.o: In function `WS2812Init':
C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Debug/../Src/WS2812.c:30: undefined reference to `HAL_TIM_Base_Init'
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:64: TimerTest.elf] Error 1
Here is my code:
main.c
#include "main.h"
#include "WS2812.h"
#include "stm32f1xx_hal.h"
#include "usb_device.h"
int main(void)
{
WS2812Init();
while (1)
{
}
}
WS2812.h:
#ifndef INC_WS2812_H_
#define INC_WS2812_H_
#include <stm32f1xx_hal_gpio.h> // use gpio output
#include <stm32f1xx_hal_rcc.h>
#include <stm32f1xx_hal_tim.h> // use timer
// adopt gpio port & pin for following section
#define WS2812_GPIO_PORT GPIOB
#define WS2812_GPIO_PIN GPIO_PIN_12
#define ENABLE_GPIO_RCC() do{\
if(!__HAL_RCC_GPIOB_IS_CLK_ENABLED())\
__HAL_RCC_GPIOB_CLK_ENABLE();\
}while(0U)
static GPIO_InitTypeDef SW2812Pin = {
.Pin = WS2812_GPIO_PIN,
.Speed = GPIO_SPEED_FREQ_LOW,
.Mode = GPIO_MODE_OUTPUT_PP
};
#define SYS_CLOCK
// adopt timer configuration for following section
#define WS2812_SELECTED_TIMER TIM4
static TIM_HandleTypeDef ws2812TimerConfig;
void WS2812Init(void);
#endif /* INC_WS2812_H_ */
WS2812.c:
#include "WS2812.h"
void WS2812Init(void)
{
// init GPIO as output
ENABLE_GPIO_RCC();
HAL_GPIO_WritePin(WS2812_GPIO_PORT, WS2812_GPIO_PIN, GPIO_PIN_RESET);
HAL_GPIO_Init(WS2812_GPIO_PORT, &SW2812Pin);
// init timer
uint16_t targetFrequency = 1000; // 1kHz
const uint16_t preScaler = 360;
const uint16_t period = SystemCoreClock / (preScaler*targetFrequency);
// clear status register
__HAL_RCC_TIM4_CLK_ENABLE();
ws2812TimerConfig.Instance = WS2812_SELECTED_TIMER;
ws2812TimerConfig.Init.Prescaler = preScaler - 1;
ws2812TimerConfig.Init.Period = period;
ws2812TimerConfig.Init.CounterMode = TIM_COUNTERMODE_UP;
HAL_TIM_Base_Init(&ws2812TimerConfig); // <- linker can not find this function
__HAL_TIM_ENABLE(&ws2812TimerConfig);
}
This is my include structure:
main->
include"WS2812.h" ->
include stm32f1xx_hal_tim.h
The stm32f1xx_hal_tim.h is in the STM32F1xxHAL_DRIVER->inc, which is also put in the include path.
I also have added the include path in the project properties->C/C++ Build->Settings
for
GNU ARM Cross Assembler
GNU ARM Cross C compiler
GNU ARM Cross C++ Compiler
I searched in the internet found out this is a linker issue, that the linker can not find the proper source for linking.
What I have found in internet and tried:
added the folder which contents stm32f1xx_hal_tim.h and WS2812.h to project properties-> C/C++ Build -> GNU ARM Cross C++ Linker -> Libraries -> (-L)
added the folder which contents stm32f1xx_hal_tim.c and WS2812.c to project properties-> C/C++ Build -> GNU ARM Cross C++ Linker -> Libraries -> (-L)
Checked "stm32f1xx_hal_tim.h" -> property-> Exclude resource from build is unchecked (some people in the internet solved the problem by this)
Added "--specs=nano.specs" to the Linker options
All of above do not solve the problem.
Some people suggest to modify the makefile. But the project generate the makefile automatically, so I don't know where to start.
If anyone can provide a hint or solution, it will be very thanksful.
UPDATE 1:
Thanks Jacek Ślimok's input.
I didn't know that, I also need to doe the "exclude from build" for .c files. And I check in the file browser. The .c files are not check in this configuration. Do you mean like this?
excluded from Build
The stm32f1xx_hal_tim.c is under project->Driver->STM32F1xxHAL_Driver->Src
At this moment, the problem remains unsolved.
Another thing I noticed is that, the Eclipse read my stm32f1xx_hal_tim.c differently. When I open the stm32f1xx_hal_tim.c in Eclipse, it just give me a plane text like in normal notepad:
stm32f1xx_hal_tim.c
But other .c file like stm32f1xx_hal_gpio.c looks like normal.
stm32f1xx_hal_gpio.c
They are in the same folder. I don't know where and why this difference came from. Does this relative to my problem.
Update2
#Jacek Ślimok, I found out why the eclipse see the stm32f1xx_hal_tim.c as plane text. I accidentally turned on the Scalability setting in Preference-> Editor, stm32f1xx_hal_tim.c has relatively large file size, 161kB. After I change it back to default, Eclipse shows the file as normal. But the linker problem is still there...
In the main.c I also used HAL_GPIO_TogglePin() from stm32f1xx_hal_gpio.h/.c. The linker does not complain about that. Currently I can not tell the difference between these 2 files(stm32f1xx_hal_gpio and stm32f1xx_hal_tim) They are in the same folder, and included the same as well. But I can use the function for GPIO not for Timer.
But one thing can be sure:
I can use the macro in the stm32f1xx_hal_tim.h, so this is a linker problem.
I start this project base on another project, which was generated from STM32CubeMX. To practice the timer function I added the timer config to it, this is the point I got problem with the linker.
I hope these information can lead to more hints.
Update 3
I tried build the .c files separately
For stm32f1xx_hal.h.c:
00:09:16 **** Building Selected Files of configuration Release for project TimerTest ****
Info: Internal Builder is used for build
arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DSTM32F103xB -DHSE_VALUE=8000000 "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Device\\ST\\STM32F1xx\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\STM32F1xx_HAL_Driver\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Class\\CDC\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Core\\Inc" -std=gnu11 -c -o "Drivers\\STM32F1xx_HAL_Driver\\Src\\stm32f1xx_hal_tim.o" "..\\Drivers\\STM32F1xx_HAL_Driver\\Src\\stm32f1xx_hal_tim.c"
00:09:17 Build Finished (took 285ms)
For WS2812.c:
00:11:23 **** Building Selected Files of configuration Release for project TimerTest ****
Info: Internal Builder is used for build
arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DSTM32F103xB -DHSE_VALUE=8000000 "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Device\\ST\\STM32F1xx\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\STM32F1xx_HAL_Driver\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Class\\CDC\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Core\\Inc" -std=gnu11 -c -o "Src\\WS2812.o" "..\\Src\\WS2812.c"
00:11:23 Build Finished (took 275ms)
And for Main.c:
00:12:02 **** Building Selected Files of configuration Release for project TimerTest ****
Info: Internal Builder is used for build
arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DSTM32F103xB -DHSE_VALUE=8000000 "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\CMSIS\\Device\\ST\\STM32F1xx\\Include" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Drivers\\STM32F1xx_HAL_Driver\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Class\\CDC\\Inc" "-IC:\\Users\\Gebruiker\\Dropbox\\CodeBase\\Eclipse\\TimerTest\\Middlewares\\ST\\STM32_USB_Device_Library\\Core\\Inc" -std=gnu11 -c -o "Src\\main.o" "..\\Src\\main.c"
..\Src\main.c: In function '_Error_Handler':
..\Src\main.c:268:27: warning: unused parameter 'file' [-Wunused-parameter]
void _Error_Handler(char *file, int line)
^~~~
..\Src\main.c:268:37: warning: unused parameter 'line' [-Wunused-parameter]
void _Error_Handler(char *file, int line)
^~~~
In file included from ..\Src\main.c:55:0:
At top level:
C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Inc/WS2812.h:36:26: warning: 'ws2812TimerConfig' defined but not used [-Wunused-variable]
static TIM_HandleTypeDef ws2812TimerConfig;
^~~~~~~~~~~~~~~~~
C:\Users\Gebruiker\Dropbox\CodeBase\Eclipse\TimerTest\Inc/WS2812.h:26:25: warning: 'SW2812Pin' defined but not used [-Wunused-variable]
static GPIO_InitTypeDef SW2812Pin = {
^~~~~~~~~
00:12:02 Build Finished (took 272ms)
There are few warning in the main.c, but they are not crucial.
Update4:
Thanks for Jacek Ślimok's input:
I found out that functions of stm32f1xx_hal_tim.c shows gray in file browser.
functions seems like not usable
But the functions in stm32f1xx_hal_gpio.c shows solid balck.
function in gpio.c are usable
Now the difference is there, just need to find out why.
Thanks in advance.
Best regards.
Doing #include stm32f1xx_hal_tim.h is not enough - it only causes your compiler not to complain, linker will still have a problem. Neither is adding a search path for the linker - this one you use mainly when you have static pre-compiled libraries that you explicitly link with the -l option. HAL is not a static library but rather a library you compile yourself.
To solve your problem, make sure you compile the corresponding source files - in this case stm32f1xx_hal_tim.c file and that it's later being linked. You mention that you use Eclipse and by default it generates a Makefile that causes all source files that you compiled in your project to also be linked. Therefore you mainly should check whether stm32f1xx_hal_tim.c is being compiled. One way to do that is to find the file in the Project Explorer, rightclick on it and select Resource Configurations -> Exclude from Build.... Make sure it's NOT checked. If it is, it is likely a whole directory is excluded from build which it should not be.
Another possibility is given function not being defined in any source file that is compiled or the function signature (name, return type and parameter types) don't match.
Yet another possibility (which in this case turned out to be the source of the issue) is that a portion of the file may not be compiled due to a #if/#ifdef preprocessor directive. In the OP's case this was caused by HAL_TIM_MODULE_ENABLED being undefined.
It is not relative to linker issue, but pre-processor.
As I mentioned, that I am building this code based on a project, which was generated from cubeMX. In the previous project, there is no timer used or configured. Than I started to write timer configuration. What I forgot is that to uncomment the #define HAL_TIM_MODULE_ENABLED in stm32f1xx_hal_conf.h. Which blocked all the implementation in stm32f1xx_hal_tim.c by pre-processor.
That is why eclipse shows all the function in stm32f1xx_hal_tim.c as gray color and not be able to be referenced.
And anyway, thanks Jacek Ślimok's effort!
Agree with Jacek Slimok, had this problem a while back, and for some reason I keep forgetting how to fix it. Googling the same solution every time if becoming annoying.
Just Skip to Solution
So you hit ctrl+space and autocomplete locates the function you want to call.
Yet in build, errors show up as "undefined reference to YOUR_FUNCTION_NAME".
So, you compile dependencies to become object files, but link object files to form an executable "firmware" generated by the compiler.
The "undefined reference" function called in main supposed to come from an object file which the linker can't locate.
Eclipse has a feature that allows you to exclude certain files from being "built" into object files. Thus the linker can't locate that dependency.
Solution:
This works for added folders or individual files in Eclipse.
So you have .c and .h files you created and you sometimes lump them in a folder you added to eclipse.
Right-click that added folder and hit properties.
In left menu select "Settings" under "C/C++ Build".
On the right, uncheck "Exclude resource from build".
Link to the picture below.
Folder Properties window in Eclipse:
Hope that helps everyone, and myself when I forget in a few days. Can you imagine the shock when I see my name on this post?

Eclipse Path to Include Directories not working for me (Windows 7-64, C++)

I installed GCC (4.8.1) this morning and Eclipse Kepler (SR2). My Hello World compiled and ran fine, so I'm moving toward my goal of writing a C++ app using Boost. I installed Boost to "C:\Program Files\boost\boost_1_55_0" and added this path to Project>Properties>C/C++ General>Paths and Symols>[tab]Includes>GNU C++. However, when I compile, the path isn't showing up in the g++ command line, so understandably, the header file isn't getting found.
15:55:24 **** Incremental Build of configuration Debug for project BoostApp ****
Info: Internal Builder is used for build
g++ -O0 -g3 -Wall -c -fmessage-length=0 -o "src\\BoostApp.o" "..\\src\\BoostApp.cpp"
..\src\BoostApp.cpp:1:32: fatal error: boost/filesystem.hpp: No such file or directory
#include "boost/filesystem.hpp"
^
compilation terminated.
15:55:24 Build Finished (took 78ms)
I realize this is a newb question and spent a few hours searching around and finding mostly direction to set the path, which I've done. I've checked the install and the header file is there. I've also done my own command line compile adding "-I C:\Program Files\boost\boost_1_55_0" to the command line and GCC found the header file fine.
Not sure where I'm going wrong. As mentioned, it's a new install of GCC, Eclipse, and Boost, so maybe I went wrong somewhere during the install or maybe creating the project? Or just a newb question? Below is the app I'm compiling which I copied from rosettacode.com
#include "boost/filesystem.hpp"
#include "boost/regex.hpp"
#include <iostream>
using namespace boost::filesystem;
int main()
{
path current_dir("."); //
boost::regex pattern("a.*"); // list all files starting with a
for (recursive_directory_iterator iter(current_dir), end;
iter != end;
++iter)
{
std::string name = iter->path().filename().string();
if (regex_match(name, pattern))
std::cout << iter->path() << "\n";
}
}

How are the libraries .h files included

I have successfully generated Objc .m and .h files from my simplistic Dagger-2 code.
https://gist.github.com/OscarRyz/ffd976fcae9acf87dbe1
Now I'm trying to compile those file using j2objcc but the error message says it can't find .h for the the Dagger-2 classes:
j2objcc -c -I. `find app -name *.m`
In file included from app/DaggerSearchComponent.m:10:
./app/SearchInPage_Factory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
^
1 error generated.
app/SearchComponent.m:11:10: fatal error: 'dagger/Component.h' file not found
#include "dagger/Component.h"
^
1 error generated.
In file included from app/SearchInPage_Factory.m:8:
./app/SearchInPage_Factory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
^
1 error generated.
In file included from app/SearchInPage_MembersInjector.m:9:
./app/SearchInPage_MembersInjector.h:10:10: fatal error: 'dagger/MembersInjector.h' file not found
#include "dagger/MembersInjector.h"
^
1 error generated.
app/SearchModule.m:10:10: fatal error: 'dagger/Module.h' file not found
#include "dagger/Module.h"
^
1 error generated.
In file included from app/SearchModule_ProvideHostFactory.m:8:
./app/SearchModule_ProvideHostFactory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
^
1 error generated.
In file included from app/SearchModule_ProvideHttpClientFactory.m:9:
./app/SearchModule_ProvideHttpClientFactory.h:10:10: fatal error: 'dagger/internal/Factory.h' file not found
#include "dagger/internal/Factory.h"
^
1 error generated.
Question: Does this means that I need to have the library source code while generating the ObjC code so the .h for those could be generated as well?
Original answer from #tabll
Dagger isn't distributed with j2objc, so you have to build it yourself. To do so (requires Maven, described in the Building J2ObjC wiki):
git clone https://github.com/google/dagger.git
cd dagger
mvn install
j2objc -d build -classpath $J2OBJC_HOME/lib/javax-inject.jar -sourcepath core/src/main/java `find core/src/main/java -name *.java`
cd build
j2objcc -c -I. `find dagger -name *.m`
ar -r libdagger.a *.o
Notes:
Specify J2OBJC_HOME either where your j2objc distribution was unzipped, or if you built j2objc, its dist directory. To test, "ls $J2OBJC_HOME/j2objc" should list the j2objc script.
These instructions generate the macosx architecture, useful when testing. The files need to be recompiled for each architecture you want to use -- the easiest way to do so is to create a static library project in Xcode, add the translated files, then include this project in your app and add it as a dependency of your app.
ar will warn that "libdagger.a(package-info.o) has no symbols", which can be ignored since it doesn't have any symbols.

List file not found in open cv

I am new to using open cv, I have downloaded the open cv- 2.4.7.tar.gz using the following link: Open CV Download
I have used the following commands in Terminal:
tar xvf OpenCV-2.4.7.tar.gz
cd OpenCV-2.4.7
mkdir build
cd build
cmake -G "Unix Makefiles" ..
make
sudo make install
When making a demo in open cv it is installed successfully.
I add the open cv framework and in the prefix.pch file I add the following:
#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#endif
#define __OPENCV_BACKGROUND_SEGM_HPP__
#include "opencv2/core/core.hpp"
#include <list>
but I get the error:
list file not found
The error is located in the background_segm.hpp class. I do not know where the background_segm.hpp class is in Xcode.
How can I resolve this error?
To solve this, I have first changed the file extensions from .m to .mm, because they are C++ files.
Example:
Viewcontroller.m to Viewcontroller.mm
Appdelegate.m to Appdelegate.mm
I was also using the old opencv framework, to fix this I have:
downloaded the new opencv2 framework
added it into my project
added this to the header search path: /usr/local/include/opencv2
added the required frameworks: Coreimage, Corevideo,ImageI/o, AVFoundation, etc...

eclipse cdt not seeing header files in project packages?

I am trying to compile a project but I'm getting an error right away that it's not seeing the header files that are in some packages inside the project. Here is a picture, notice that it is not finding the AwarenessMoment.h file, however it is in there.
Here is the output:
**** Build of configuration Debug for project RoyOS ****
make all
Building file: ../src/royos/vision/ImageRecognizer.cpp
Invoking: GCC C++ Compiler
g++ -I/home/igvc/Documents/teamigvc/trunk/RoyOS -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/royos/vision/ImageRecognizer.d" -MT"src/royos/vision/ImageRecognizer.d" -o"src/royos/vision/ImageRecognizer.o" "../src/royos/vision/ImageRecognizer.cpp"
In file included from ../src/royos/vision/ImageRecognizer.cpp:8:0:
../src/royos/vision/ImageRecognizer.h:11:29: fatal error: AwarenessMoment.h: No such file or directory
compilation terminated.
make: *** [src/royos/vision/ImageRecognizer.o] Error 1
Anyone know why it's not seeing these header files?
Thanks
There's definitely something wrong with the include path given to the compiler. The preprocessor can't find the header from the source file you are attempting to compile.
I think you could fix this by replacing
#include "AwarenessMoment.h"
with
#include "../sensor/AwarenessMoment.h"
Either that or alter the compiler include path to include the sensor directory and use:
#include <AwarenessMoment>