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dnl qt6.m4
dnl Copyright (C) 2016 Intevation GmbH
dnl
dnl This file is part of gpgme and is provided under the same license as gpgme
dnl Autoconf macro to find Qt6
dnl
dnl sets GPGME_QT6_LIBS, GPGME_QT6_CFLAGS, and MOC6
dnl
dnl if QT6 was found have_qt6_libs is set to yes
AC_DEFUN([FIND_QT6],
[
have_qt6_libs="no";
PKG_CHECK_MODULES(GPGME_QT6,
Qt6Core >= 6.4.0,
[have_qt6_libs="yes"],
[have_qt6_libs="no"])
PKG_CHECK_MODULES(GPGME_QT6TEST,
Qt6Test >= 6.4.0,
[have_qt6test_libs="yes"],
[have_qt6test_libs="no"])
if test "$have_qt6_libs" = "yes"; then
# Qt6 moved moc to libexec
qt6libexecdir=$($PKG_CONFIG --variable=libexecdir 'Qt6Core >= 6.4.0')
AC_PATH_TOOL(MOC6, moc, [], [$qt6libexecdir])
if test -z "$MOC6"; then
AC_MSG_WARN([moc not found - Qt 6 binding will not be built.])
have_qt6_libs="no";
fi
fi
if test "$have_qt6_libs" = "yes"; then
if test "$have_w32_system" != yes; then
mkspecsdir=$($PKG_CONFIG --variable mkspecsdir Qt6Platform)
if test -z "$mkspecsdir"; then
AC_MSG_WARN([Failed to determine Qt's mkspecs directory. Cannot check its build configuration.])
fi
fi
# check if we need -fPIC
if test -z "$use_reduce_relocations" && test -n "$mkspecsdir"; then
AC_MSG_CHECKING([whether Qt was built with -fPIC])
if grep -q "QT_CONFIG .* reduce_relocations" $mkspecsdir/qconfig.pri; then
use_reduce_relocations="yes"
else
use_reduce_relocations="no"
fi
AC_MSG_RESULT([$use_reduce_relocations])
fi
if test "$use_reduce_relocations" = yes; then
GPGME_QT6_CFLAGS="$GPGME_QT6_CFLAGS -fPIC"
fi
# check if we need -mno-direct-extern-access
if test "$have_no_direct_extern_access" = yes; then
if test -z "$use_no_direct_extern_access" && test -n "$mkspecsdir"; then
AC_MSG_CHECKING([whether Qt was built with -mno-direct-extern-access])
if grep -q "QT_CONFIG .* no_direct_extern_access" $mkspecsdir/qconfig.pri; then
use_no_direct_extern_access="yes"
else
use_no_direct_extern_access="no"
fi
AC_MSG_RESULT([$use_no_direct_extern_access])
fi
if test "$use_no_direct_extern_access" = yes; then
GPGME_QT6_CFLAGS="$GPGME_QT6_CFLAGS -mno-direct-extern-access"
fi
fi
dnl Check that a binary can actually be build with this qt.
dnl pkg-config may be set up in a way that it looks also for libraries
dnl of the build system and not only for the host system. In that case
dnl we check here that we can actually compile / link a qt application
dnl for host.
OLDCPPFLAGS=$CPPFLAGS
OLDLIBS=$LIBS
CPPFLAGS=$GPGME_QT6_CFLAGS
LIBS=$GPGME_QT6_LIBS
AC_LANG_PUSH(C++)
AC_MSG_CHECKING([whether a simple Qt program can be built])
AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <QCoreApplication>
int main (int argc, char **argv) {
QCoreApplication app(argc, argv);
app.exec();
}])], [have_qt6_libs='yes'], [have_qt6_libs='no'])
AC_MSG_RESULT([$have_qt6_libs])
AC_LANG_POP()
CPPFLAGS=$OLDCPPFLAGS
LIBS=$OLDLIBS
fi
])
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