Using pthread lib in C with Cmake - c

Question

/* Edited */
my Cmakefile.txt file is:
cmake_minimum_required(VERSION 3.3)
project(WebServer)
set(CMAKE_C_COMPILER "/usr/bin/gcc")
set(SOURCE_FILES io.c server.c lock_fcntl.c sig_handler.c thread_job.c msg_parser.c)
set(LIB http-parser-master/http_parser.c)
set(CMAKE_USE_PTHREADS_INIT true)
set(CMAKE_USE_PTHREADS_INIT ON)
find_package(Threads REQUIRED)
add_executable(server ${SOURCE_FILES} ${LIB})
target_link_libraries(server Threads::Threads)
add_executable(client client.c io.c)
include_directories(header)
include_directories(http-parser-master)
In this way, I can compile and link my code. However pthread_create seems not work.
server.c:
void create_thread(int socket) {
data_t *data;
data = malloc(sizeof(data_t));
if (data == NULL) {
fprintf(stderr, "error in memory allocation");
exit(EXIT_FAILURE);
}
data->sock = socket;
/* debug */
fprintf(stdout, "[*] Creating thread\n");
fflush(stdout);
if (pthread_create(data->tid, NULL, job_t, data) != 0) {
fprintf(stderr, "Error returned by pthread_create()\n");
exit(EXIT_FAILURE);
}
/* debug */
fprintf(stdout, "[*] Thread created\n");
fflush(stdout);
}
thread_job.c:
void *job_t(void *arg) {
data_t *data = arg;
char *http_msg_h;
int nread;
/* debug */
fprintf(stdout, "start listening\n");
fflush(stdout);
/* read http header from connsd socket and store it in msg buffer */
nread = receive_msg_h(data->sock, (void **) &http_msg_h);
/* debug */
fprintf(stdout, "[+] parsing completed");
fflush(stdout);
}
Neither "start listening nor "Thread creation" is printed in output.
it is as if the function does not return but it doesn't work.

Answer 1

CMakeLists.txt is correct. My error was in code.
I change
pthread_create(data->tid, NULL, job_t, data) != 0
in pthread_create(&data->tid, NULL, job_t, data) != 0.