Compilation problem on Qt c++ on mac os x 10.8.5
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Hi,
I need to write some code for an application that uses a camera with ethernet connection. The company who made the camera has provided include files to read images from the camera. The files are : ImageLib.h , PvApi.h and PvRegIo.h and some librarie files libImagelib.a and libPvAPI.a and libPvAPI.dylib libPvJNI.dylib
I put the librarie files in /opt/local/lib/. I put the include files in /opt/local/include/In the other hand, company provided some *.cpp examples that contains makefile for compilation. I compile some example and they worked perfectly.
Now, I decide to compile one example provided by the company to list the connected cameras called ListCameras.cpp.
I create a new project on QT and just I copied the code of ListCameras.cpp.
My ListCameras.pro is like this:@QT += core
QT -= gui
TARGET = ListCameras
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH+=/opt/local/include/
LIBS+=-L/opt/local/lib/
LIBS+= -llPvAPI
LIBS+= -llPvJNI @Unfortunately, I have a lot of compilation errors.
@12:21:15: Running steps for project ListCameras...
12:21:15: Starting: "/usr/bin/make"
clang++ -c -pipe -mmacosx-version-min=10.6 -g -gdwarf-2 -Wall -W -fPIE -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_CORE_LIB -I../../5.0.2/clang_64/mkspecs/macx-clang -I../ListCameras -I/opt/local/include -I../../5.0.2/clang_64/include -I../../5.0.2/clang_64/include/QtCore -I../../5.0.2/clang_64/lib/QtCore.framework/Headers -I. -I. -o main.o ../ListCameras/main.cpp
In file included from ../ListCameras/main.cpp:55:
/opt/local/include/PvApi.h:97:26: error: Define PVDECL to be your compiler keyword for "standard call"
#error Define PVDECL to be your compiler keyword for "standard call"
^
/opt/local/include/PvApi.h:271:22: error: expected ')'
typedef void (PVDECL tPvLinkCallback)(void Context,
^
/opt/local/include/PvApi.h:271:14: note: to match this '('
typedef void (PVDECL tPvLinkCallback)(void Context,
^
/opt/local/include/PvApi.h:302:22: error: expected ')'
typedef void (PVDECL tPvCameraEventCallback)(void Context,
^
/opt/local/include/PvApi.h:302:14: note: to match this '('
typedef void (PVDECL tPvCameraEventCallback)(void Context,
^
/opt/local/include/PvApi.h:302:15: error: typedef redefinition with different types ('void (void *, tPvHandle, const tPvCameraEvent , unsigned long)' vs 'void (void , tPvInterface, tPvLinkEvent, unsigned long)')
typedef void (PVDECL tPvCameraEventCallback)(void Context,
^
/opt/local/include/PvApi.h:271:15: note: previous definition is here
typedef void (PVDECL tPvLinkCallback)(void Context,
^
/opt/local/include/PvApi.h:412:22: error: expected ')'
typedef void (PVDECL tPvFrameCallback)(tPvFrame Frame);
^
/opt/local/include/PvApi.h:412:14: note: to match this '('
typedef void (PVDECL tPvFrameCallback)(tPvFrame Frame);
^
/opt/local/include/PvApi.h:412:15: error: typedef redefinition with different types ('void (tPvFrame )' vs 'void (void , tPvInterface, tPvLinkEvent, unsigned long)')
typedef void (PVDECL tPvFrameCallback)(tPvFrame Frame);
^
/opt/local/include/PvApi.h:271:15: note: previous definition is here
typedef void (PVDECL tPvLinkCallback)(void Context,
^
/opt/local/include/PvApi.h:431:2: error: Define specific data types for your platform.
#error Define specific data types for your platform.
^
/opt/local/include/PvApi.h:508:6: error: variable has incomplete type 'void'
void PVDECL PvVersion(unsigned long pMajor,unsigned long pMinor);
^
/opt/local/include/PvApi.h:508:12: error: expected ';' after top level declarator
void PVDECL PvVersion(unsigned long pMajor,unsigned long pMinor);
^
;
/opt/local/include/PvApi.h:528:8: error: redefinition of 'PVDECL' as different kind of symbol
tPvErr PVDECL PvInitialize(void);
^
/opt/local/include/PvApi.h:271:15: note: previous definition is here
typedef void (PVDECL tPvLinkCallback)(void Context,
^fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make: *** [main.o] Error 1
12:21:15: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project ListCameras (kit: Desktop Qt 5.0.2 clang 64bit)
When executing step 'Make'
12:21:15: Elapsed time: 00:00.@ -
Hi, try to add this to your .pro file
@
DEFINES += _OSX
@also you can look at "this thread":https://qt-project.org/forums/viewthread/5673 (note: for Linux not Mac, but same problem)
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Hello,
Thanks! I resolved some errors by adding just@DEFINES += _x64 _OSX@
but I got some errors like:
@14:08:04: Running steps for project ListCameras...
14:08:04: Starting: "/usr/bin/make"
make: Nothing to be done for `first'.
14:08:04: The process "/usr/bin/make" exited normally.
14:08:04: Configuration unchanged, skipping qmake step.
14:08:04: Could not start process ""
Error while building/deploying project ListCameras (kit: Desktop Qt 5.0.2 clang 64bit)
When executing step 'Custom Process Step'
14:08:04: Elapsed time: 00:00.@ -
Hello,
I think I have to add some others flags or libraries in ListCameras.pro but I do not which flags or librairies are missed.
@QT += core
QT -= gui
TARGET = ListCameras
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH+=/opt/local/include/
LIBS+=-L/opt/local/lib/
LIBS+= -lPvAPI
LIBS+= -lPvJNI
DEFINES += _x64 _OSX@The configuration file ARCH given by the company for all example is like this:
@# Global ARCHitecture settings for the Sample code
this file should be adapted to your platform
Target CPU
#CPU = x86
CPU = x64Target OS
OS = OSX
OS_DIR = OSXOS-X version
OSXV = -mmacosx-version-min=10.5
architecture flags
#ARCH = -m32
compilation flags
OPT = -O3 $(ARCH) $(OSXV)
compiler version
CVER = 4.2
compiler
#CC =g++-$(CVER)
CC=g++linker
LD = ld
AR = ar
SP = stripsome flags
DFLAGS = -D_$(CPU) -D_$(OS)
#FLAGS = -fno-strict-aliasing -fexceptions -I/usr/include $(DFLAGS)
FLAGS = -I/usr/include $(DFLAGS)TIFF library
#LTIFF = -ltiff
few locations
INC_DIR = ../../inc-pc
BIN_DIR = ../../bin-pc/$(CPU)
LIB_DIR = ../../lib-pc/$(CPU)
OBJ_DIR = ./obj/$(CPU)
EXTRA_LIB = -lpthread -lzlibrary
LJPEG = -ljpeg
libs (shared/static)
PVLIB = -L$(BIN_DIR) -lPvAPI
SOLIB = $(EXTRA_LIB) -Bdynamic -lm -lc
SALIB = -Bstatic $(LIB_DIR)/$(CVER)/libPvAPI.a -framework CoreFoundation
IMLIB = -Bstatic $(LIB_DIR)/$(CVER)/libImagelib.a -Bdynamic $(LTIFF)final compilation flags
CFLAGS = $(OPT) $(FLAGS) -Wall -I$(INC_DIR) -D_REENTRANT $(EXTRA)@
the makefile for the ListCameras example is:
@# makefile of GigE SDK Sample codeinclude ../ARCH
Executable
EXE = ListCameras
$(OBJ_DIR)/%.o : %.cpp
$(CC) $(CFLAGS) $(VERSION) -c $< -o $clean:
rm $(EXE)sample : $(EXE).cpp
$(CC) $(RPATH) $(TARGET) $(CFLAGS) $(EXE).cpp -o $(EXE) $(SOLIB) $(PVLIB)sample-static : $(EXE).cpp
$(CC) $(RPATH) $(TARGET) $(CFLAGS) $(EXE).cpp $(SALIB) -o $(EXE) $(SOLIB)install:
cp -f $(EXE) $(BIN_DIR)@ -
Hi and welcome to devnet,
Did you do a clean rebuild after adding the defines ?
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Hello,
each time, i do clean all then rebuild!
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Did you add a custom process step ?
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Hello,
I have not used c++ for 7 or 8 years. So i do not understand what is custom process step.
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Nothing c++ specific,
There's this line in your output@When executing step 'Custom Process Step'@
So did you modify the build steps in the Projects panel ?
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Thanks,
Ok , to avoid all modification. I create an other project on Qt and I just copied the main.cpp code. I got a good news and bad news.
good news: the Custum Process error is disappeared.
bad news: when i execute i get a problem like @dyld: Library not loaded: libPvAPI.dylib @ -
Go the run panel in the Projects panel.
If it's not there, add a DYLD_LIBRARY_PATH environment variable in the "Run environment" part and as value put the path to the folder containing libPvAPI.dylib (if it already exists, add the path to the current list)
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thanks a lot,
It is progressing. I got a new errors. I learned a lots today. I cleaned and rebuild my project but I got this error.
@dyld: Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
Expected in: /opt/local/lib//libJPEG.dylib
in /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO@ -
Hello,
I did some research on google, developers suggests that we have to avoid use DYLD_LIBRARY_PATH because there is dynamic-linking-conflict between different libjpeg dynamic libraries on OSX . ("Conflict between dynamic linking priority in OSX?":http://stackoverflow.com/questions/17643509/conflict-between-dynamic-linking-priority-in-osx)
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Indeed, that's why I generally ensure that common dependencies I might have between libraries comes from a common place
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Hello,
I resolved the problem by put the library given in the SDK on the project folder. But, really I can not why when I configure it like:
@DYLD_LIBRARY_PATH=/opt/local/bin@ it did not work and I get an error like @dyld: Symbol not found: __cg_jpeg_resync_to_restart
Referenced from: /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
Expected in: /opt/local/lib//libJPEG.dylib
in /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO@
but when I copied the library form /opt/local/bin to the project folder, it work fine ??!! Any explication please ? -
@DYLD_LIBRARY_PATH=/opt/local/bin@
you are pointing to the bin folder, the dylibs are in
@DYLD_LIBRARY_PATH=/opt/local/lib@
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Hello,
Sorry, I made a mistake in my last post.
In fact, I put@ DYLD_LIBRARY_PATH=/opt/local/lib@ but it does not work but when I copied the library form /opt/local/lib to the project folder, it work fine ??!! Any explication please ?
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Have a look at your application with otool -L you'll see what is linked.
Then you also have the search order which is important
