Enable code coverage for Makefile projects

If you're using your own custom build environment, rather than the QNX project build environment, you'll have to manually pass the coverage option to the compiler.
To enable code coverage for non-QNX projects:
If you're using qcc/gcc, compile and link with the following options:
-fprofile-arcs -ftest-coverage

For example, your Makefile might look something like the Makefile below, which belongs to the Code Coverage example project included with the IDE (although, this example includes additional comments):

DEBUG = -g 
CC = qcc 
LD = qcc 
CFLAGS += -Vgcc_ntox86 $(DEBUG) -c -Wc,-Wall -I. -O0 -Wc,-ftest-coverage 
LDFLAGS+= -Vgcc_ntox86 $(DEBUG) -ftest-coverage -fprofile-arcs  

# CC refers to the program for compiling C programs (the default is 
# qcc. Use 
# CXX as the program for compiling C++ programs. 

# CFLAGS are additional flags to give to the C compiler. Use CFLAGS  
# for the C++ compiler. 

# -c compiles or assemble the source files, but doesn't link, and the 
# -Wc captures the warning messages. The linking stage isn't done. 
# The ultimate output is in the form of an object file for each
# source file. 

# -Wall turns on all optional warnings that are desirable for normal  
# code. -I. adds the current directory to the list of directories to  
# search for header files. Directories named by -I are searched before  
# the standard system include directories. 

# -O0 is an optimization flag that indicates 'Do not optimize.' 

# LDFLAGS are additional flags to give to compilers when they invoke 
# the ld linker. 

# -ftest-coverage -Wc means that Code Coverage is enabled for your  
# project, and the data is used for test coverage analysis. 

# -fprofile-arcs adds code so that program flow arcs are instrumented.  
# During execution, the program records how many times each branch and 
# call is executed and how many times it is taken or returns, and it 
# saves this data to a file with the extension .gcda for each source  
# file.
# For Code Coverage, you'll need the -fprofile-arcs -ftest-coverage  
# options in both the compile and link lines.

dir := $(shell pwd) 

BINS = rbt_client rbt_server 

# This next line is the rule for <cmd>all</cmd> that  
# incrementally builds your system by performing a <cmd>make</cmd>  
# of all the top-level targets the Makefile knows about. It does this by 
# expressing a dependency on the results of that system, which in turn  
# have their own rules and dependencies. 

all: $(BINS) 

# The following line shows a simple rule for cleaning your build  
# environment. It cleans your build environment by deleting all files  
# that are normally created by running make. 

# It has a Target named <cmd>clean</cmd> to left of the colon,  
# no dependencies (to the right of the colon), and two commands that are 
# indented by tabs on the lines that follow. 

rm -f *.o *.img *.gcno *.gcda $(BINS) 

# The following lines are Dependency Rules, which are rules without any  
# command. If any file to the right of the colon changes, the target to  
# the left of the colon is no longer considered current (out of date). 
# Dependency Rules are often used to capture header file dependencies. 

rbt_server: rbt_server.o 

# Alternatively, to manually capture dependencies, several automated 
# dependency generators exist. 

rbt_server.o : rbt_server.c rbt_server.h 
$(CC) $(CFLAGS) $(dir)/$< 

rbt_client: rbt_client.o 

rbt_client.o: rbt_client.c rbt_server.h 
$(CC) $(CFLAGS) $(dir)/$< 

To enable Code Coverage for your project, you must use the options -fprofile-arcs -ftest-coverage when compiling and linking.

For example, in the Makefile, you'll have the following gcc options set for Code Coverage:

CFLAGS += -g -fprofile-arcs -ftest-coverage 
LDFLAGS+= -g -fprofile-arcs -ftest-coverage