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build,qt: Autodetect whether Qt was built with -mno-direct-extern-access

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* m4/qt6.m4: Check the build configuration of Qt 6 for
no_direct_extern_access.
--

If building with -mno-direct-extern-access has been neither enabled nor
disabled explicitly, then check whether Qt 6 was built with this flag.
The check is skipped, if we build for Windows.

GnuPG-bug-id: 6696
This commit is contained in:
Ingo Klöcker 2023-09-21 22:53:00 +02:00
parent 927f129663
commit 4e321a0f06
No known key found for this signature in database
GPG Key ID: F5A5D1692277A1E9
1 changed files with 18 additions and 3 deletions
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21
m4/qt6.m4
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@ -34,9 +34,24 @@ AC_DEFUN([FIND_QT6],
fi
if test "$have_qt6_libs" = "yes"; then
if test "$have_no_direct_extern_access" = "yes" \
&& test "$use_no_direct_extern_access" = "yes"; then
GPGME_QT6_CFLAGS="$GPGME_QT6_CFLAGS -mno-direct-extern-access"
if test "$have_no_direct_extern_access" = yes; then
if test -z "$use_no_direct_extern_access" && test "$have_w32_system" != yes; then
mkspecsdir=$($PKG_CONFIG --variable mkspecsdir Qt6Platform)
if test -n "$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])
else
AC_MSG_WARN([Failed to determine Qt's mkspecs directory. Cannot check its build configuration.])
fi
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.