Hi Madhav,
On 10/15/2009 8:03 AM, Madhav Ancha wrote:
Hi,
When I run the linker through the command line like this, it works.
g++ -g -pg -fprofile-arcs -ftest-coverage -Lrelease1 -o testApp
file.o -lSharedLib
But when i run from a make file with the follow equivalent
commands, it does not. It gives the error reproduced below. can you
help debug the cause.
LINK_FLAGS= -g -pg -fprofile-arcs -ftest-coverage -fPIC -Lrelease1
testApp: file.o -lSharedLib
$(CXX) $(LINK_FLAGS) -o $@ $^
Error:
make: *** No rule to make target `-lSharedLib', needed by
`testApp'. Stop.
A makefile contains rules and command (and other things). Rules are
lists of targets, followed by separator (colon, double-colon, etc),
followed by lists of dependencies. Commands are lines prefixed with a
TAB character. In your rule, you have a linker option (-lSharedLib) in
your dependency list. The target list and the dependency list must only
contain file names, or macros that resolve to file names, or patterns
(containing '%' or '*' characters) that can match file names. You can't
put anything else into either the target or dependency list. What you
probably wanted to write was this (untested):
LINK_FLAGS= -g -pg -fprofile-arcs -ftest-coverage -fPIC -Lrelease1
testApp: file.o
$(CXX) $(LINK_FLAGS) -o $@ file.o -lSharedLib
Note that I changed $^ to file.o in the command line because $^ is not
portable between various flavors of make.
John
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