configure: rename POSIX ioctl check

Commit 00b64fc introduced configure
detection for HAVE_POSIX_IOCTL but unfortunately this conflicts with
v4l-utils version 1.30, which itself checks for #ifdef HAVE_POSIX_IOCTL
in a public header and erroneously determines it to be true because we
define this to be 0.

Since this is only used for avdevice/v4l2, we rename this to something
else, namely ioctl_posix, simply to prevent the name conflict with the
file /usr/include/libv4l2.h at least until they can upstream a fix on
their end.

Signed-off-by: Leo Izen <[email protected]>

Author: Traneptora

configure

@@ -2533,6 +2533,7 @@ HAVE_LIST="
     $TOOLCHAIN_FEATURES
     $TYPES_LIST
     gzip
+    ioctl_posix
     libdrm_getfb2
     makeinfo
     makeinfo_html
@@ -2545,7 +2546,6 @@ HAVE_LIST="
     opencl_videotoolbox
     perl
     pod2man
-    posix_ioctl
     texi2html
     xmllint
     zlib_gzip
@@ -7275,7 +7275,7 @@ xmllint --version  > /dev/null 2>&1 && enable xmllint   || disable xmllint
 check_headers linux/fb.h
 check_headers linux/videodev2.h
 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
-test_code cc sys/ioctl.h "int ioctl(int, int, ...)" && enable posix_ioctl
+test_code cc sys/ioctl.h "int ioctl(int, int, ...)" && enable ioctl_posix
 
 # check V4L2 codecs available in the API
 if enabled v4l2_m2m; then

libavdevice/v4l2.c

@@ -111,7 +111,7 @@ struct video_data {
     int (*open_f)(const char *file, int oflag, ...);
     int (*close_f)(int fd);
     int (*dup_f)(int fd);
-#if HAVE_POSIX_IOCTL
+#if HAVE_IOCTL_POSIX
     int (*ioctl_f)(int fd, int request, ...);
 #else
     int (*ioctl_f)(int fd, unsigned long int request, ...);