Compilation problem on Qt c++ on mac os x 10.8.5

studentvision

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.@

hskoglund

Good!
About "make: Nothing to be done...": Maybe you need to refresh your project in QtCreator, do a Build/Run qmake
(I think :-)

studentvision

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 = x64

Target OS

OS = OSX
OS_DIR = OSX

OS-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 = strip

some 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 -lz

library

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 code

include ../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)@

hskoglund

Ok, but what other errors apart from that "make: Nothing to be done...: do you see?

SGaist

Hi and welcome to devnet,

Did you do a clean rebuild after adding the defines ?

studentvision

Hello,

each time, i do clean all then rebuild!

SGaist

Did you add a custom process step ?

studentvision

Hello,

I have not used c++ for 7 or 8 years. So i do not understand what is custom process step.

SGaist

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 ?

studentvision

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 @

SGaist

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)

studentvision

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@

studentvision

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)

SGaist

Indeed, that's why I generally ensure that common dependencies I might have between libraries comes from a common place

studentvision

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 ?

SGaist

@DYLD_LIBRARY_PATH=/opt/local/bin@

you are pointing to the bin folder, the dylibs are in

@DYLD_LIBRARY_PATH=/opt/local/lib@

studentvision

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 ?

SGaist

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

studentvision

Hello,
I run this command

@otool -L main .o@
but I did not get any output ?

SGaist

Not on main.o on the executable generated