Well, here's the chain of instructions which builds the various macros;
I guess the answer is, it doesn't look a -L argument is being generated
at all!! At least, it isn't present in the link/compile command below.
I wonder if I need something like LIBCXXDIR, to replace the LIBCDIR
below? Unfortunately, I don't have anything to use for reference
*except* the cxxtest directories, and all of those build native apps,
not mb apps, when I run make... Clearly, I'm still missing one or more
steps in converting the default C Makefile to a CPP makefile.
Dan
# Point to default PetaLinux root directory
ifndef ROOTDIR
ROOTDIR=$(PETALINUX)/software/petalinux-dist
endif
PATH:=$(PATH):$(ROOTDIR)/tools
UCLINUX_BUILD_USER = 1
-include $(ROOTDIR)/.config
-include $(ROOTDIR)/$(CONFIG_LINUXDIR)/.config
LIBCDIR = $(CONFIG_LIBCDIR)
-include $(ROOTDIR)/config.arch
ROMFSDIR=$(ROOTDIR)/romfs
ROMFSINST=$(ROOTDIR)/tools/romfs-inst.sh
APP = ulocate
# Add any other object files to this list below
APP_OBJS = ulocate.o
all: $(APP)
$(APP): $(APP_OBJS)
$(CXX) $(CXX_LDFLAGS) -o $@ $(APP_OBJS) $(CXXLIBS)
Chris Robson wrote:
Dan
what does your "-L" statement look like? Here is an example of my app,
built within the ./petalinux-dist/user tree, but the "-L'" statement
should be similar (of course the tree would be diff).
can you capture the make output?
My test Makefile within ./petalinux-dist/user/responder tree
responder: responder.c handlers.o Makefile common.h config.o hash.o
inflight.o
$(CC) -g -Wall -I/usr/include -o responder \
-L $(ROOTDIR)/lib/sofia-sip/build/libsofia-sip-ua/.libs \
inflight.o handlers.o hash.o config.o responder.c \
$(LDLIBS) -lsofia-sip-ua -lpthread
Dan Miller wrote:
Okay, as far as I can tell, I'm doing this
correctly; please update if I am not:
1. Create a new app using petalinux-new-app
2. copy my source file into the resulting directory.
Unlike the default appname.c, my file is appname.cpp
3. In the Makefile:
app build: change all
CC => CXX,
LDFLAGS => CXX_LDFLAGS
LDLIBS => CXXLIBS
add new rule for %.cpp, change:
CC => CXX
CFLAGS => CXXFLAGS
All this is based on user/cxxtest/helloworld/Makefile
But, when I build, the file-compile is successful, but link fails:
mb-linux-g++ -o ulocate ulocate.o -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
/home/petalinux-v0.40-rc3/tools/linux-i386/microblaze-glibc-root/bin/../lib/gcc/microblaze-linux-elf/4.1.1/../../../../microblaze-linux-elf/bin/ld:
cannot find -lstdc++
collect2: ld returned 1 exit status
make: *** [ulocate] Error 1
//*****************************************************
So, what am I doing wrong?
Dan Miller
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