8f0dd9478e
Future releases of GCC are planning to remove[0] default support for
some old features that were removed from C99 but GCC still accepts.
We can test for these changes by using the following -Werror=
directives
-Werror=implicit-int
-Werror=implicit-function-declaration
-Werror=int-conversion
-Werror=strict-prototypes
-Werror=old-style-definition
Doing so revealed an issue with the auto/ tests in that the test
programs always define main as
int main()
rather than
int main(void)
which results in a bunch of errors like
build/autotest.c:3:23: error: function declaration isn't a prototype [-Werror=strict-prototypes]
3 | int main() {
| ^~~~
build/autotest.c: In function 'main':
build/autotest.c:3:23: error: old-style function definition [-Werror=old-style-definition]
The fix was easy, it only required fixing the main prototype with
find -type f -exec sed -i 's/int main() {/int main(void) {/g' {} \;
Regardless of these upcoming GCC changes, this is probably a good thing
to do anyway for correctness.
[0]: https://fedoraproject.org/wiki/Changes/PortingToModernC
Link: <https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/CJXKTLXJUPZ4F2C2VQOTNMEA5JAUPMBD/>
Link: <https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/6SGHPHPAXKCVJ6PUZ57WVDQ5TDBVIRMF/>
Reviewed-by: Alejandro Colomar <alx@nginx.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
280 lines
7 KiB
Text
280 lines
7 KiB
Text
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# Copyright (C) Igor Sysoev
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# Copyright (C) NGINX, Inc.
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if [ $NXT_INET6 = YES ]; then
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nxt_feature="AF_INET6"
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nxt_feature_name=NXT_INET6
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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int main(void) {
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struct sockaddr_in6 sin6;
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sin6.sin6_family = AF_INET6;
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printf(\"%d\", sin6.sin6_family);
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return 0;
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}"
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. auto/feature
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fi
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# FreeBSD, MacOSX, NetBSD, OpenBSD.
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nxt_feature="sockaddr.sa_len"
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nxt_feature_name=NXT_SOCKADDR_SA_LEN
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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int main(void) {
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struct sockaddr sa;
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sa.sa_len = 0;
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printf(\"%d\", sa.sa_len);
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return 0;
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}"
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. auto/feature
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nxt_feature="struct sockaddr size"
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nxt_feature_name=NXT_HAVE_SOCKADDR
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nxt_feature_run=value
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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int main(void) {
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printf(\"%d\", (int) sizeof(struct sockaddr));
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return 0;
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}"
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. auto/feature
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nxt_feature="struct sockaddr_in size"
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nxt_feature_name=NXT_HAVE_SOCKADDR_IN
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nxt_feature_run=value
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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int main(void) {
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printf(\"%d\", (int) sizeof(struct sockaddr_in));
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return 0;
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}"
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. auto/feature
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nxt_feature="struct sockaddr_in6 size"
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nxt_feature_name=NXT_HAVE_SOCKADDR_IN6
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nxt_feature_run=value
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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int main(void) {
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printf(\"%d\", (int) sizeof(struct sockaddr_in6));
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return 0;
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}"
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. auto/feature
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nxt_feature="struct sockaddr_un size"
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nxt_feature_name=NXT_HAVE_SOCKADDR_UN
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nxt_feature_run=value
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/types.h>
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#include <sys/un.h>
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int main(void) {
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printf(\"%d\", (int) sizeof(struct sockaddr_un));
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return 0;
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}"
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. auto/feature
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nxt_feature="struct sockaddr_storage size"
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nxt_feature_name=NXT_HAVE_SOCKADDR_STORAGE
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nxt_feature_run=value
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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int main(void) {
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printf(\"%d\", (int) sizeof(struct sockaddr_storage));
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return 0;
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}"
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. auto/feature
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nxt_feature="socketpair(AF_UNIX, SOCK_SEQPACKET)"
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nxt_feature_name=NXT_HAVE_AF_UNIX_SOCK_SEQPACKET
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nxt_feature_run=yes
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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int main(void) {
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int pair[2];
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if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) != 0)
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return 1;
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return 0;
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}"
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. auto/feature
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nxt_feature="struct msghdr.msg_control"
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nxt_feature_name=NXT_HAVE_MSGHDR_MSG_CONTROL
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <stdio.h>
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#include <sys/socket.h>
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int main(void) {
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struct msghdr msg;
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printf(\"%d\", (int) sizeof(msg.msg_control));
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return 0;
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}"
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. auto/feature
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if [ $nxt_found = no ]; then
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$echo
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$echo $0: error: no msghdr.msg_control struct member.
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$echo
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exit 1;
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fi
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if [ $NXT_SYSTEM != DragonFly ]; then
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nxt_feature="sockopt SO_PASSCRED"
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nxt_feature_name=NXT_HAVE_SOCKOPT_SO_PASSCRED
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#define _GNU_SOURCE
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#include <sys/socket.h>
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int main(void) {
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return SO_PASSCRED == 0;
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}"
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. auto/feature
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if [ $nxt_found = yes ]; then
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nxt_feature="struct ucred"
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nxt_feature_name=NXT_HAVE_UCRED
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#define _GNU_SOURCE
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#include <sys/socket.h>
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#include <sys/un.h>
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int main(void) {
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return sizeof(struct ucred);
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}"
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. auto/feature
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fi
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nxt_feature="struct cmsgcred"
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nxt_feature_name=NXT_HAVE_MSGHDR_CMSGCRED
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#define _GNU_SOURCE
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#include <sys/socket.h>
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int main(void) {
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return sizeof(struct cmsgcred);
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}"
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. auto/feature
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fi
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nxt_feature="sys/filio.h"
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nxt_feature_name=NXT_HAVE_SYS_FILIO_H
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <sys/filio.h>
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int main(void) {
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return 0;
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}"
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. auto/feature
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nxt_feature="ioctl(FIONBIO)"
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nxt_feature_name=NXT_HAVE_FIONBIO
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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int main(void) {
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int nb;
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nb = 0;
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ioctl(-1, FIONBIO, &nb);
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return 0;
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}"
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. auto/feature
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# socket(SOCK_NONBLOCK), Linux 2.6.27/glibc 2.10, NetBSD 6.0, FreeBSD 9.2.
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nxt_feature="socket(SOCK_NONBLOCK)"
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nxt_feature_name=NXT_HAVE_SOCK_NONBLOCK
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#define _GNU_SOURCE
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#include <sys/socket.h>
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int main(void) {
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socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
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return 0;
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}"
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. auto/feature
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# accept4(), Linux 2.6.28/glibc 2.10, NetBSD 6.0, FreeBSD 9.2.
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nxt_feature="accept4()"
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nxt_feature_name=NXT_HAVE_ACCEPT4
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nxt_feature_run=
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nxt_feature_incs=
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nxt_feature_libs=
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nxt_feature_test="#define _GNU_SOURCE
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#include <stdlib.h>
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#include <sys/socket.h>
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int main(void) {
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accept4(0, NULL, NULL, SOCK_NONBLOCK);
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return 0;
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}"
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. auto/feature
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