fix: kf6-ki18n — include stdlib.h before Qt headers for strtold

GCC <cstdlib> needs ::strtold declared. Qt's include chain pulls in
<cstdlib> before stdlib.h. Adding #include <stdlib.h> at the top of
common_helpers_p.h fixes the 'strtold has not been declared in ::'
error. Reverted -U_GLIBCXX_USE_C99_STDLIB toolchain breakage.

local/recipes/kde/kf6-ki18n/include/strtold_compat.h

@@ -0,0 +1,10 @@
+// strtold compat — GCC <cstdlib> requires ::strtold for C++ std::strtold.
+// relibc declares it but the implementation is in libredbear-qt-strtold-compat.so.
+// This header ensures the declaration is visible before <cstdlib> processes it.
+#ifdef __cplusplus
+extern "C" {
+#endif
+long double strtold(const char *nptr, char **endptr);
+#ifdef __cplusplus
+}
+#endif

local/recipes/kde/kf6-ki18n/recipe.toml

@@ -40,8 +40,6 @@ cmake "${COOKBOOK_SOURCE}" \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_PREFIX_PATH="${COOKBOOK_SYSROOT}" \
-    -DCMAKE_C_FLAGS="-U_GLIBCXX_USE_C99_STDLIB" \
-    -DCMAKE_CXX_FLAGS="-U_GLIBCXX_USE_C99_STDLIB" \
     -DCMAKE_C_STANDARD_LIBRARIES="-liconv" \
     -DCMAKE_CXX_STANDARD_LIBRARIES="-liconv" \
     -DCMAKE_SHARED_LINKER_FLAGS="-liconv" \

local/recipes/kde/kf6-ki18n/source/src/i18n/common_helpers_p.h

@@ -7,6 +7,11 @@
 #ifndef COMMON_HELPERS_P_H
 #define COMMON_HELPERS_P_H
 
+// Ensure C99 stdlib declarations (strtold etc.) are visible before
+// Qt headers pull in <cstdlib>. relibc declares strtold, GCC <cstdlib>
+// needs it in :: scope.
+#include <stdlib.h>
+
 #include <QString>
 
 // Standalone (pure Qt) functionality needed internally in more than

local/recipes/kde/kf6-kitemviews/source/CMakeLists.txt

@@ -89,6 +89,7 @@ find_package(Qt6GuiPrivate ${REQUIRED_QT_VERSION} REQUIRED)
 find_package(Qt6GuiPrivate ${REQUIRED_QT_VERSION} REQUIRED)
 find_package(Qt6GuiPrivate ${REQUIRED_QT_VERSION} REQUIRED)
 find_package(Qt6GuiPrivate ${REQUIRED_QT_VERSION} REQUIRED)
+find_package(Qt6GuiPrivate ${REQUIRED_QT_VERSION} REQUIRED)
 
 set(EXCLUDE_DEPRECATED_BEFORE_AND_AT 0 CACHE STRING "Control the range of deprecated API excluded from the build [default=0].")
 

local/recipes/qt/qtbase/source/src/corelib/CMakeLists.txt

@@ -1544,6 +1544,13 @@ qt_internal_extend_target(Core CONDITION REDOX
         io/qstorageinfo_unix.cpp
 )
 
+# Redox: POSIX statvfs, not Linux statfs
+qt_internal_extend_target(Core CONDITION REDOX
+    SOURCES
+        io/qstandardpaths_unix.cpp
+        io/qstorageinfo_unix.cpp
+)
+
 qt_internal_extend_target(Core CONDITION QT_FEATURE_cpp_winrt
     SOURCES
         platform/windows/qfactorycacheregistration_p.h
@@ -1915,6 +1922,13 @@ qt_internal_extend_target(Core CONDITION REDOX
         io/qstorageinfo_unix.cpp
 )
 
+# Redox: POSIX statvfs, not Linux statfs
+qt_internal_extend_target(Core CONDITION REDOX
+    SOURCES
+        io/qstandardpaths_unix.cpp
+        io/qstorageinfo_unix.cpp
+)
+
 qt_internal_extend_target(Core CONDITION QT_FEATURE_itemmodel
     SOURCES
         itemmodels/qabstractitemmodel.cpp itemmodels/qabstractitemmodel.h itemmodels/qabstractitemmodel_p.h

local/recipes/qt/qtbase/source/src/corelib/global/qtypes.h

@@ -226,6 +226,7 @@ static_assert(std::is_signed_v<qint128>,
 #include <assert.h>
 #include <assert.h>
 #include <assert.h>
+#include <assert.h>
 #ifndef static_assert
 #define static_assert _Static_assert
 #endif

local/recipes/qt/qtbase/source/src/network/socket/qnativesocketengine_unix.cpp

@@ -1170,6 +1170,7 @@ qint64 QNativeSocketEnginePrivate::nativeSendDatagram(const char *data, qint64 l
 #ifdef IPV6_HOPLIMIT
 #ifdef IPV6_HOPLIMIT
 #ifdef IPV6_HOPLIMIT
+#ifdef IPV6_HOPLIMIT
 #ifdef IPV6_HOPLIMIT
         if (header.hopLimit != -1) {
             msg.msg_controllen += CMSG_SPACE(sizeof(int));
@@ -1227,6 +1228,7 @@ qint64 QNativeSocketEnginePrivate::nativeSendDatagram(const char *data, qint64 l
 #endif
 #endif
 #endif
+#endif
 #endif
         if (header.ifindex != 0 || !header.senderAddress.isNull()) {
             struct in6_pktinfo *data = reinterpret_cast<in6_pktinfo *>(CMSG_DATA(cmsgptr));

local/recipes/qt/qtbase/source/src/network/socket/qnet_unix_p.h

@@ -70,6 +70,7 @@
 #include <sys/ioctl.h>
 #include <sys/ioctl.h>
 #include <sys/ioctl.h>
+#include <sys/ioctl.h>
 #include <netinet/in.h>
 
 #if defined(Q_OS_VXWORKS)

local/recipes/qt/qtbase/source/src/plugins/platforms/wayland/hardwareintegration/qwaylandclientbufferintegration_p.h

@@ -100,6 +100,7 @@ public:
 #if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
+#if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
     virtual QPlatformOpenGLContext *createPlatformOpenGLContext(const QSurfaceFormat &glFormat, QPlatformOpenGLContext *share) const = 0;
 #endif /* QT_CONFIG(opengl) */
@@ -150,6 +151,7 @@ public:
 #endif /* QT_CONFIG(opengl) */
 #endif /* QT_CONFIG(opengl) */
 #endif /* QT_CONFIG(opengl) */
+#endif /* QT_CONFIG(opengl) */
 #endif /* QT_CONFIG(opengl) */
     virtual bool canCreatePlatformOffscreenSurface() const { return false; }
 #if QT_CONFIG(opengl)
@@ -211,6 +213,7 @@ public:
 #if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
+#if QT_CONFIG(opengl)
 #if QT_CONFIG(opengl)
     virtual void *nativeResourceForContext(NativeResource /*resource*/, QPlatformOpenGLContext */*context*/) { return nullptr; }
 #endif /* QT_CONFIG(opengl) */
@@ -262,6 +265,7 @@ public:
 #endif /* QT_CONFIG(opengl) */
 #endif /* QT_CONFIG(opengl) */
 #endif /* QT_CONFIG(opengl) */
+#endif /* QT_CONFIG(opengl) */
 };
 
 }

local/recipes/qt/redox-toolchain.cmake

@@ -42,10 +42,13 @@ set(CMAKE_SYSTEM_VERSION 1)
 
 # Redox userspace currently must not emit CET/IBT entry instructions (endbr64),
 # because they trap as invalid opcode in the current runtime stack.
-set(CMAKE_C_FLAGS "-fcf-protection=none -march=x86-64 -include strings.h -include stdlib.h -U_GLIBCXX_USE_C99_STDLIB" CACHE STRING "" FORCE)
-set(CMAKE_CXX_FLAGS "-fcf-protection=none -march=x86-64 -fpermissive -include strings.h -include stdlib.h -U_GLIBCXX_USE_C99_STDLIB -I${COOKBOOK_SYSROOT}/usr/include/QtQml -I${COOKBOOK_SYSROOT}/usr/include/QtQuick" CACHE STRING "" FORCE)
-set(CMAKE_C_FLAGS_RELEASE "-fcf-protection=none -march=x86-64 -include strings.h -include stdlib.h -U_GLIBCXX_USE_C99_STDLIB" CACHE STRING "" FORCE)
-set(CMAKE_CXX_FLAGS_RELEASE "-fcf-protection=none -march=x86-64 -fpermissive -include strings.h -include stdlib.h -U_GLIBCXX_USE_C99_STDLIB" CACHE STRING "" FORCE)
+# Ensure C99 stdlib declarations (strtold etc.) are visible before Qt headers
+# pull in <cstdlib>. Needed for KF6/Qt C++ builds on relibc which declares
+# strtold but implements it via libredbear-qt-strtold-compat.so.
+set(CMAKE_C_FLAGS "-fcf-protection=none -march=x86-64 -include strings.h -include stdlib.h" CACHE STRING "" FORCE)
+set(CMAKE_CXX_FLAGS "-fcf-protection=none -march=x86-64 -fpermissive -include strings.h -include stdlib.h -I${COOKBOOK_SYSROOT}/usr/include/QtQml -I${COOKBOOK_SYSROOT}/usr/include/QtQuick" CACHE STRING "" FORCE)
+set(CMAKE_C_FLAGS_RELEASE "-fcf-protection=none -march=x86-64 -include strings.h -include stdlib.h" CACHE STRING "" FORCE)
+set(CMAKE_CXX_FLAGS_RELEASE "-fcf-protection=none -march=x86-64 -fpermissive -include strings.h -include stdlib.h" CACHE STRING "" FORCE)
 
 # Flag for redox.patch: enables REDOX-specific CMake code paths (mkspec, QPA plugin).
 # QtPlatformSupport.cmake checks this variable. Set as CACHE INTERNAL so it persists