g++: error: unrecognized option ‘--as-needed’

Question

I am using Ubuntu 12.10 with a gcc version 4.6.3. I am trying to build my code and getting an error when using 'make' command

g++: error: unrecognized option ‘--as-needed’

My Makefile looks as follows:

LFLAGS = -Wl,-rpath,. -Wl,-rpath-link,../bin --as-needed
LDFLAGS = $(RPATH) $(RPATHLINK)  -L$(USRLIB) --as-needed

Previously this code was successfully building on RedHat Linux. But now I need to run this code on Ubuntu.

If anyone knows about this. Please help

Regards Gaurav

Answer 1

@FatalError is right

And also better late than never answering this question.

you need to use -Wl,--as-needed

Answer 2

Seems like you had an extra space between the ld specifier "-Wl" and the option to be passed to ls "--as-needed". For the linker to get the extra option from g++ command, it should be "-Wl,--as-needed"