compiling csapp.c and csapp.h - c

Question

I am trying to compile the files csapp.c and csapp.h on a Ubuntu 12 operating system. I think I am missing some header file or some option but I do not know which one. Or perhaps I do not have the latest gcc. Here is my Makefile:
SRC = tiny.c
LIB = csapp.c
INC = csapp.h
ALL = $(SRC) $(LIB) $(INC)
webServer-gcc : $(ALL)
gcc -std=c99 -O2 -lpthread -lrt -o server $(ALL)
Here is my error output from the terminal:
csapp.c: In function ‘Kill’:
csapp.c:81:5: warning: implicit declaration of function ‘kill’ [-Wimplicit-function- declaration]
csapp.c: In function ‘Signal’:
csapp.c:124:22: error: storage size of ‘action’ isn’t known
csapp.c:124:30: error: storage size of ‘old_action’ isn’t known
csapp.c:127:5: warning: implicit declaration of function ‘sigemptyset’ [-Wimplicit- function-declaration]
csapp.c:128:23: error: ‘SA_RESTART’ undeclared (first use in this function)
csapp.c:128:23: note: each undeclared identifier is reported only once for each function it appears in
csapp.c:130:5: warning: implicit declaration of function ‘sigaction’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Sigprocmask’:
csapp.c:138:5: warning: implicit declaration of function ‘sigprocmask’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Sigfillset’:
csapp.c:152:5: warning: implicit declaration of function ‘sigfillset’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Sigaddset’:
csapp.c:159:5: warning: implicit declaration of function ‘sigaddset’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Sigdelset’:
csapp.c:166:5: warning: implicit declaration of function ‘sigdelset’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Sigismember’:
csapp.c:174:5: warning: implicit declaration of function ‘sigismember’ [-Wimplicit-function-declaration]
csapp.c: In function ‘Fdopen’:
csapp.c:326:5: warning: implicit declaration of function ‘fdopen’ [-Wimplicit-function-declaration]
csapp.c:326:13: warning: assignment makes pointer from integer without a cast [enabled by default]
csapp.c: In function ‘open_clientfd’:
csapp.c:741:5: warning: implicit declaration of function ‘bzero’ [-Wimplicit-function-declaration]
csapp.c:743:5: warning: implicit declaration of function ‘bcopy’ [-Wimplicit-function-declaration]
make: *** [webServer-gcc] Error 1
Here is my last remaining error inside my main function:
tiny.c:23:24: error: storage size of ‘clientaddr’ isn’t known
here is line 23 of my code:
struct socketaddr_in clientaddr;

Answer 1

Use -std=gnu99, see this link.
and I write a new Makefile for you, hope this can help you.
CC = gcc
LIBS = -lpthread -lrt
INCS = -I./
CCFLAGS = -std=gnu99 -O2
all: server
server: csapp.o tiny.c
$(CC) $(CCFLAGS) $^ -o $# $(LIBS) $(INCS)
csapp.o: csapp.c csapp.h
$(CC) $(CCFLAGS) -c $< -o $# $(INCS)
clean:
rm -f server csapp.o