Add dev-qt from an older version of the gentoo repo

Qt5 has been removed, we restore it since we still use it.

dev-qt/qtbase/files/qtbase-6.10.3-QTBUG-145310.patch

@@ -0,0 +1,20 @@
+https://mail.kde.org/pipermail/distributions/2026-May/001681.html
+https://qt-project.atlassian.net/browse/QTBUG-145310
+https://codereview.qt-project.org/c/qt/qtbase/+/727830
+--- a/src/gui/text/freetype/qfontengine_ft.cpp
++++ b/src/gui/text/freetype/qfontengine_ft.cpp
+@@ -1956,9 +1956,11 @@
+ 
+     err = FT_Render_Glyph(slot, renderMode);
+-    if (err != FT_Err_Ok)
+-        qWarning("render glyph failed err=%x face=%p, glyph=%d", err, face, glyph);
+-
+     FT_Library_SetLcdFilter(slot->library, FT_LCD_FILTER_NONE);
+ 
++    if (err != FT_Err_Ok) {
++        qWarning("render glyph failed err=%x face=%p, glyph=%d", err, face, glyph);
++        return nullptr;
++    }
++
+     info.height = slot->bitmap.rows;
+     info.width = slot->bitmap.width;

dev-qt/qtbase/files/qtbase-6.11.1-QTBUG-146670.patch

@@ -0,0 +1,14 @@
+https://codereview.qt-project.org/c/qt/qtbase/+/735182
+https://qt-project.atlassian.net/browse/QTBUG-146670
+(seems to also affect ppc32)
+--- a/src/corelib/kernel/qtestsupport_core.cpp
++++ b/src/corelib/kernel/qtestsupport_core.cpp
+@@ -9,8 +9,4 @@
+ using namespace std::chrono_literals;
+ 
+-// Assert that this instantiation of std::atomic is always lock-free so we
+-// know that no code will execute on destruction.
+-static_assert(std::atomic<std::chrono::milliseconds>::is_always_lock_free);
+-
+ QT_BEGIN_NAMESPACE
+ 

dev-qt/qtbase/files/qtbase-6.5.2-hppa-forkfd-grow-stack.patch

@@ -0,0 +1,28 @@
+Patch taken from Debian[1], largely broken on HPPA without and several
+tests give segmentation faults[2].
+
+Needs upstreaming if someone familiar with HPPA wants to give this
+attention. Note forkfd is essentially maintained in qtbase's repo[3]
+rather than truly third party.
+
+[1] https://bugs.debian.org/1042018
+[2] https://bugs.gentoo.org/914371
+[3] https://code.qt.io/cgit/qt/qtbase.git/tree/src/3rdparty/forkfd
+
+Description: Change how stack grows on HPPA.
+ On HPPA stack grows upwards. This patch introduces this change for
+ this 3rd party code.
+Author: John David Anglin <dave.anglin@bell.net>
+--- a/src/3rdparty/forkfd/forkfd_linux.c
++++ b/src/3rdparty/forkfd/forkfd_linux.c
+@@ -170,5 +170,10 @@
+     *system = 1;
+ 
++#if defined(__hppa__)
++    /* Stack grows up */
++    pid = clone(childFn, childStack, cloneflags, token, &pidfd, NULL, NULL);
++#else
+     pid = clone(childFn, childStack + sizeof(childStack), cloneflags, token, &pidfd, NULL, NULL);
++#endif
+     if (pid < 0)
+         return pid;

dev-qt/qtbase/files/qtbase-6.5.2-no-symlink-check.patch

@@ -0,0 +1,5 @@
+https://bugs.gentoo.org/914195
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -65 +64,0 @@
+-qt_internal_check_if_path_has_symlinks("${CMAKE_BINARY_DIR}")

dev-qt/qtbase/files/qtbase-6.6.1-forkfd-childstack-size.patch

@@ -0,0 +1,27 @@
+Avoid crash that happens for some users in qsb, qmake, and
+potentially other Qt tools when ran under sandbox leading
+to build failures for qtdeclarative and other packages.
+
+Former fix involved replacing 4096 by SIGSTKSZ but
+bug #918664 shown that this may be insufficient so this
+tries 32k instead.
+
+Update: after https://bugs.gentoo.org/923013 and a fixed
+sandbox been stabilized for some time, it should in theory
+be possible to drop this
+
+https://bugs.gentoo.org/908809
+https://bugs.gentoo.org/908816
+https://bugs.gentoo.org/913493
+https://bugs.gentoo.org/915695
+https://bugs.gentoo.org/918664
+https://codereview.qt-project.org/c/qt/qtbase/+/513140
+--- a/src/3rdparty/forkfd/forkfd_linux.c
++++ b/src/3rdparty/forkfd/forkfd_linux.c
+@@ -158,5 +158,5 @@
+ int system_vforkfd(int flags, pid_t *ppid, int (*childFn)(void *), void *token, int *system)
+ {
+-    __attribute__((aligned(64))) char childStack[SIGSTKSZ];
++    __attribute__((aligned(64))) char childStack[32768];
+     pid_t pid;
+     int pidfd;

dev-qt/qtbase/files/qtbase-6.6.3-gcc14-avx512fp16.patch

@@ -0,0 +1,15 @@
+Simply disable the broken path rather than worry about it for now.
+
+Likely an easy fix but would rather this be handled upstream and
+reported by someone that is affected and can test.
+
+https://bugs.gentoo.org/926287
+--- a/src/gui/painting/qrgbafloat.h
++++ b/src/gui/painting/qrgbafloat.h
+@@ -20,5 +20,5 @@
+ public:
+     using Type = F;
+-#if defined(__AVX512FP16__) && QFLOAT16_IS_NATIVE
++#if 0
+     // AVX512FP16 has multiplication instructions
+     using FastType = F;

dev-qt/qtbase/files/qtbase-6.8.2-cross.patch

@@ -0,0 +1,36 @@
+When cross-compiling, CMake needs to find the build host's Qt6CoreTools. It
+therefore prepends QT_HOST_PATH, which is /usr, to CMAKE_FIND_ROOT_PATH. The
+problem is that CMAKE_FIND_ROOT_PATH is only a hint, not a definitive
+location. Just below, CMake's find_package is usually told to look in
+/usr/${CHOST}/usr/lib/cmake and /usr/lib/cmake when cross-compiling. Since
+both of these are under /usr, it chooses the former instead of the latter.
+It then ends up trying to execute non-native Qt binaries.
+
+We can avoid this problem by setting CMAKE_FIND_ROOT_PATH to a more precise
+location. All the Qt6 modules are installed under /usr/lib/cmake, represented
+by the __qt_find_package_host_qt_path variable, so we can point it there.
+
+find_package has two modes, module mode and config mode. No mode is
+explicitly chosen in this case, so it tries both. In module mode, it would
+use a module called FindQt6*.cmake, but no such module exists. It is
+therefore safe to assume config mode, which involves the files under
+/usr/lib/cmake.
+
+See the isSameDirectoryOrSubDirectory() call in CMake's
+cmFindCommon::RerootPaths() function for exactly where this goes wrong.
+
+Chewi
+
+https://bugs.gentoo.org/950314
+
+--- a/cmake/QtConfig.cmake.in
++++ b/cmake/QtConfig.cmake.in
+@@ -131,7 +131,7 @@
+         set(__qt_backup_cmake_find_root_path "${CMAKE_FIND_ROOT_PATH}")
+         list(PREPEND CMAKE_PREFIX_PATH "${__qt_find_package_host_qt_path}"
+             ${_qt_additional_host_packages_prefix_paths})
+-        list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_HOST_PATH}"
++        list(PREPEND CMAKE_FIND_ROOT_PATH "${__qt_find_package_host_qt_path}"
+             ${_qt_additional_host_packages_root_paths})
+     endif()
+ 

dev-qt/qtbase/files/qtbase-6.9.0-no-direct-extern-access.patch

@@ -0,0 +1,9 @@
+Re-allow auto-detect rather than do =ON to ensure the toolchain supports it.
+https://bugs.gentoo.org/754021
+https://github.com/qt/qtbase/commit/48675dfa3 (revert of)
+--- a/configure.cmake
++++ b/configure.cmake
+@@ -784,3 +784,2 @@
+     CONDITION NOT WIN32 AND TEST_no_direct_extern_access
+-    AUTODETECT OFF
+ )