c - Compile and link a source file containing object files to another data structure -

-

this current makefile:

cc=gcc include=./structures/ cflags=-wall -i$(include) objs=rlmain.o rlist.o queue.o  .phony: clean  all: rlmain  queue.o: $(include)queue.c $(include)queue.h         $(cc) $(cflags) -c $(include)queue.c -o queue.o  rlist.o: $(include)rlist.c $(include)rlist.h         $(cc) $(cflags) -c $(include)rlist.c -o rlist.o  rlmain: main.c rlist.o queue.o         $(cc) $(cflags) main.c rlist.o queue.o -o rlmain  clean:          rm -f *.o rlmain

makefile in top directory. in lower directory called "structures" collection of files data structures. data structures implement ready list - linked list of queues.

i managed queue.o working using '-c' cannot rlist.o make because rlist.c not contain main method, , must link queue.o functions. i'm using command make

everything else working except command. want write command tell compiler link queue.o functions rlist.c compilation not compile functions require main(). do in order make happen?

note: `<tab>` needs replaced tab character note: use `:=` when defining macros, evaluated once  # select specific external executables run cc := /usr/bin/gcc rm := /usr/bin/rm  include := ./structures/ cflags  := -c -wall -wextra -pedantic -wconversion -std=gnu99  objs    := main.o rlist.o queue.o  .phony: clean  all: rlmain  queue.o: $(include)queue.c $(incs) <tab>$(cc) $(cflags) $< -o $@ -i$(include)  rlist.o: $(include)rlist.c $(incs) <tab>$(cc) $(cflags) $< -o $@ -i$(include)  main.o: $(include)main.c $(incs) <tab>$(cc) $(cflags) $< -o $@ -i$(include)  rlmain: $(objs)  <tab>$(cc) $(objs) $(lflags)  clean:  <tab>$(rm) -f *.o rlmain

--edit-- following added -- following of more common gnu make utility macros

$@  <<-- name left of colon on `rule`      file name of target. $%      target member name, when target archive member. $<  <<-- use reference first dependency on `rule`      name of first prerequisite. $?  <<-- more reliable method reference first dependency on `rule`      names of prerequisites newer target, spaces between them. prerequisites archive members, named member used (see archives). $^ $+      names of prerequisites, spaces between them. prerequisites archive members, named member used (see archives). value of $^ omits duplicate prerequisites, while $+ retains them , preserves order. $*      stem implicit rule matches (see how patterns match). $(@d) $(@f)      directory part , file-within-directory part of $@. $(*d) $(*f)      directory part , file-within-directory part of $*. $(%d) $(%f)      directory part , file-within-directory part of $%. $(<d) $(<f)      directory part , file-within-directory part of $<. $(^d) $(^f)      directory part , file-within-directory part of $^. $(+d) $(+f)      directory part , file-within-directory part of $+. $(?d) $(?f)      directory part , file-within-directory part of $?.

Comments

Post a Comment

Popular posts from this blog

mysql - Dreamhost PyCharm Django Python 3 Launching a Site -

-
i'm new python/django , created simple django website using pycharm. site works fine running on computer, i'm lost when comes taking site onto host (dreamhost). i'm able upload files correct directories fine, , believe made correct changes database on mysql. i'm not sure go there though. right now, page shows files rather site. direction appreciated. much! you should not run django application using python manage.py runserver on production. how run application on django depends on server (apache, nginx) want use for apache - https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/modwsgi/ for nginx - https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-uwsgi-and-nginx-on-ubuntu-14-04 the mysql database should, of course, exist , have correct credentials. or, if choose use sqlite, file should accessible, readable , writable www-user (may different depending on linux distributive)
Read more

java - Sending SMS with SMSLib and Web Services -

-
i have made rest web service send smss using hsdpa usb modem. using smslib in java send smss. every time web service invoked, create gateway start service, send message, stop service , remove gateway. takes 20 seconds each message. found starting service takes lot of time. part of code use send smss service.getinstance().addgateway(gateway); service.getinstance().startservice(); outboundmessage msg = new outboundmessage(phonenumber, message); if (service.getinstance().sendmessage(msg)) { result = "message sent successfully!!"; } else { result = "could not send message."; } service.getinstance().stopservice(); service.getinstance().removegateway(gateway);//remove gateway is there way can start service once if not started , use send message when ever web service invoked? why dont group messages , send in 1 go? service.getinstance().sendmessages(messa...
Read more

java - How to resolve The method toString() in the type Object is not applicable for the arguments (InputStream) -

-
i'm trying read json file local machine. @path("/") public class jsonparsing { file f = new file("file.json"); if (f.exists()){ inputstream = new fileinputstream("file.json"); string jsontxt = ioutils.tostring(is); system.out.println(jsontxt); jsonobject json = new jsonobject(jsontxt); string = json.getstring("1000"); system.out.println(a); } } but i'm getting error in tostring() method. possible read .txt file containing json object local machine? if possible, how done? firstly: whenever ask question- add imports well. secondly: yes possible read .txt file containing json object. steps: 1. add maven dependency in pom.xml - <dependency> <groupid>com.googlecode.json-simple</groupid> <artifactid>json-simple</artifactid> <version>1.1.1</version> </dependency> or add jar of dependency. 2.import...
Read more