Here is my makefile.
# The intuitive "all" target will be our default.
.DEFAULT_GOAL := all
# Component dir's to search and invoke make.
# (Try preserving the order of directories)
COM := src_dir1 src_dir2 src_dir3
PROJ_DIR = $(shell pwd)
EXEC := anonymousforconfidentiality
CC := g++
CFLAGS := -g3
LIBS = `pkg-config --cflags --libs glib-2.0 gio-unix-2.0 bluez protobuf lrt`
.PHONY : clean compile link all
all: | clean compile link
link:
$(eval $@_ALLOBJECTS := $(shell find . -name '*.o'))
$(CC) $(CFLAGS) -o $(EXEC) $($@_ALLOBJECTS) $(LIBS)
compile:
for COMDIR in $(COM) ; do \
$(MAKE) INCLUDE_PATH=$(PROJ_DIR) -C $$COMDIR ; \
done
clean:
for COMDIR in $(COM) ; do \
rm -f $$COMDIR/bin/*.o ; \
done
rm -f $(EXEC)
I am not able to link the library 'lrt'. I make extensive use of POSIX real time such as mq_open(), mq_send(), mq_receive() etc... So it is imperative I link it.
Some of the variations I tried: 1. librt 2. lrt 3. rt 4. librt-dev
However I always get this error:
Package lrt was not found in the pkg-config search path.
Perhaps you should add the directory containing `lrt.pc'
to the PKG_CONFIG_PATH environment variable
No package 'lrt' found
I even tried to manually install "librt" but was unsuccessful in locating the package. Nor did apt-get find it.
I was assuming this lib comes prepackaged with Ubuntu normal kernel (no real time patch). Need help with resolution of this issue.
You probably want to link rt library. This is done with -lrt. No need to use pkg-config for it.
E.g.:
LIBS := `pkg-config --libs glib-2.0 gio-unix-2.0 bluez protobuf` -lrt