diff options
| author | Gaetan Nadon <memsize@videotron.ca> | 2011-11-16 14:07:10 -0500 |
|---|---|---|
| committer | Martin-Éric Racine <martin-eric.racine@iki.fi> | 2011-11-21 10:33:09 +0200 |
| commit | fc19e7d2bd256663b4a731661a35abcf435eaf18 (patch) | |
| tree | abdad879a545cfcf992528d6c032bd9d4be36e90 | |
| parent | 23b85b3fcd1439561f0693755a31f7fded50741b (diff) | |
Add a configure option to enable/disable building the ztv driver
Even when V4L2 is available there are always reasons why distros
may not want to build the driver.
This patch uses a common idiom in xorg.
When no configure option is specified ztv is built iff v4l2 is detected (auto).
When user issues --disable-ztv, the ztv driver is not built (no)
When user issues --enable-ztv, the ztv driver is built (yes) if v4l2 is detected
but the configuration fails if v4l2 is missing. Distros do not want silent
failures when a feature is explicitly requested but cannot be built.
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
| -rw-r--r-- | configure.ac | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac index 3c28bb0..efe75d5 100644 --- a/configure.ac +++ b/configure.ac @@ -70,6 +70,27 @@ AC_ARG_ENABLE(visibility, [ AMD_CFLAGS="$AMD_CFLAGS -fvisibility=hidden" ], [ : ]) +# Define a configure option to enable/disable ztv +AC_ARG_ENABLE(ztv, + AS_HELP_STRING([--enable-ztv], + [Enable Video For Linux based ZTV driver (default: auto-detected)]), + [ztv=$enableval], + [ztv=auto]) + +# Check for Video4Linux Version 2 (V4L2) availability +AC_CHECK_HEADERS([linux/videodev2.h],[v4l2=yes],[v4l2=no]) +if test "x$ztv" != "xno" ; then + if test "x$v4l2" = "xno" ; then + if test "x$ztv" = "xyes" ; then + # User really wants ztv but V4L2 is not found + AC_MSG_ERROR([ZTV driver requested, but videodev2.h not found.]) + fi + else + BUILD_ZTV=yes + fi +fi +AM_CONDITIONAL(BUILD_ZTV, [test "x$BUILD_ZTV" = xyes]) + if test "x$GCC" = "xyes"; then GCC_WARNINGS1="-Wall -Wpointer-arith -Wstrict-prototypes" GCC_WARNINGS2="-Wmissing-prototypes -Wmissing-declarations" @@ -110,10 +131,6 @@ if test "x$XSERVER_LIBPCIACCESS" = xyes; then XORG_CFLAGS="$XORG_CFLAGS $PCIACCESS_CFLAGS" fi -# Check for Video4Linux Version 2 (V4L2) -AC_CHECK_HEADERS([linux/videodev2.h],[v4l2=yes]) -AM_CONDITIONAL(BUILD_ZTV, [test "x$v4l2" = xyes]) - AC_SUBST([XORG_CFLAGS]) AC_SUBST([moduledir]) AC_SUBST([AMD_CFLAGS]) |