Mac Forum / Programming / Mac Programming / December 2006

In the process of porting an app from linux to osx.
(Thanks to Apple loaning some hardware)

On linux we are using shared libraries, some of which
are dependent on other shared libraries.
So we are using dylibs.

All the code( main application and other libraries) except the two dependent
dynamic
libraries builds without error.

The main app is a commandline image processing executable.

makefiles below.
Think they were originally generated by eclipse.

The problem is  the linker can not find the dependent dylib,
where as on linux it finds it no problem.
The dependednt library is in ../../fusion/lib directory, relative to the
directory the
makefile is in.

Have the same directory structure,exactly the same files
just the makefiles differ slightly.

Most likely something really simple and stupid.
Been stuck on this for a while.

One other question is , how to automatically start this terminal app
at startup and automatically restart it, if it terminates for any reason ?

On linux I use inittab for this.

All help greatly appreciated

Thank you

Alex Gibson

This is the linux makefile
__________________________________________________________
ROOT := ..

-include $(ROOT)/makefile.init

RM := rm -rf

# All of the sources participating in the build are defined here
-include sources.mk
-include $(SUBDIRS:%=%/subdir.mk)
-include objects.mk
ifneq ($(strip $(DEPS)),)
-include $(DEPS)
endif

-include $(ROOT)/makefile.defs

# Add inputs and outputs from these tool invocations to the build variables

# All Target
all: liblpr.so

# Tool invocations
liblpr.so: $(OBJS) $(USER_OBJS)
@echo 'Building target: $@'
@echo 'Invoking: GCC C Linker'
@echo gcc -nostartfiles -L../../fusion/lib `pkg-config --libs
opencv` -shared -oliblpr.so $(OBJS) $(USER_OBJS) $(LIBS)
@gcc -nostartfiles -L../../fusion/lib `pkg-config --libs
opencv` -shared -oliblpr.so $(OBJS) $(USER_OBJS) $(LIBS)
@echo 'Finished building target: $@'
@echo ' '

# Other Targets
clean:
-$(RM) $(DEPS)$(OBJS)$(LIBRARIES) liblpr.so
-@echo ' '

.PHONY: all clean dependents
.SECONDARY:

-include $(ROOT)/makefile.targets
___________________________________________________________________

This is the mac makefile, that won't work

ROOT := ..

-include $(ROOT)/makefile.init

RM := rm -rf

# All of the sources participating in the build are defined here
-include sources.mk
-include $(SUBDIRS:%=%/subdir.mk)
-include objects.mk
ifneq ($(strip $(DEPS)),)
-include $(DEPS)
endif

-include $(ROOT)/makefile.defs

# Add inputs and outputs from these tool invocations to the build variables

# All Target
all: liblpr.dylib

# Tool invocations
liblpr.dylib: $(OBJS) $(USER_OBJS)
@echo 'Building target: $@'
@echo 'Invoking: GCC C Linker'
@echo gcc -nostartfiles -L../../fusion/lib `pkg-config --libs
opencv` -dynamiclib -install_name liblpr.dylib -o liblpr.dylib $(OBJS)
$(USER_OBJS) $(LIBS)
@gcc -nostartfiles -L../../fusion/lib `pkg-config --libs
opencv` -dynamiclib -install_name liblpr.dylib -o liblpr.dylib $(OBJS)
$(USER_OBJS) $(LIBS)
@echo 'Finished building target: $@'
@echo ' '

# Other Targets
clean:
-$(RM) $(DEPS)$(OBJS)$(LIBRARIES) liblpr.dylib
-@echo ' '

.PHONY: all clean dependents
.SECONDARY:

-include $(ROOT)/makefile.targets