mkvtoolnix/ac/cmark.m4
Moritz Bunkus 2848178815
configure: detect & use Qt 6 if present, prefer over Qt 5
Qt 6

`configure` will look for Qt 6 first and only continue looking for Qt
5 if Qt 6 isn't found or disabled via `--disable-qt6`.

Qt 6 detection works by first looking for the `qmake6` binary. Its location
can be specified with the `--with-qmake6=…` option.

All other Qt 6 related facts (such as compiler & linker flags or the
position of the other required tools such as `lconvert`, `moc`, `rcc` and
`uic`) will be derived from the output generated by `qmake6`.

Note that at this point Qt 6 is not yet supported for the cross-compilation
build to Windows, nor is a static Qt 6 build supported yet.

Note that the command line options `--enable-static-qt`,
`--with-qt-pkg-config-modules` and `--without-qt-pkg-config` only apply to
the Qt 5 and have no effect on Qt 6.

Qt 5

The options for specifying the position of the tools (`--with-moc=…`,
`--with-rcc=…` and `--with-uic=…`) have been removed. Their position
will now be derived from the output generated by `qmake`.

General

Completely disabling the GUI now requires passing both `--disable-qt6`
and `--disable-qt` options.

Part of the implementation of #3115.
2021-05-24 20:53:09 +02:00

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dnl
dnl Check for cmark
dnl
if test x"$USE_QT" = xyes; then
PKG_CHECK_EXISTS([libcmark],[cmark_found=yes],[cmark_found=no])
if test x"$cmark_found" = xyes; then
PKG_CHECK_MODULES([libcmark],[libcmark],[cmark_found=yes])
CMARK_CFLAGS="`$PKG_CONFIG --cflags libcmark`"
CMARK_LIBS="`$PKG_CONFIG --libs libcmark`"
fi
if test x"$cmark_found" != xyes; then
AC_MSG_ERROR([Could not find the cmark library])
fi
AC_DEFINE(HAVE_CMARK,,[define if building with cmark])
else
CMARK_CFLAGS=""
CMARK_LIBS=""
fi
AC_SUBST(CMARK_CFLAGS)
AC_SUBST(CMARK_LIBS)