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-rw-r--r--src/corelib/configure.json15
-rw-r--r--src/corelib/global/minimum-linux_p.h2
-rw-r--r--src/corelib/global/qconfig-bootstrapped.h5
-rw-r--r--src/corelib/io/qtemporaryfile_p.h2
4 files changed, 22 insertions, 2 deletions
diff --git a/src/corelib/configure.json b/src/corelib/configure.json
index 8067ca70f1..bf44f2649d 100644
--- a/src/corelib/configure.json
+++ b/src/corelib/configure.json
@@ -349,6 +349,15 @@
"qmake": "linux: LIBS += -lpthread -lrt"
}
},
+ "linkat": {
+ "label": "linkat()",
+ "type": "compile",
+ "test": {
+ "head": "#define _ATFILE_SOURCE 1",
+ "include": [ "fcntl.h", "unistd.h" ],
+ "main": "linkat(AT_FDCWD, \"foo\", AT_FDCWD, \"bar\", AT_SYMLINK_FOLLOW);"
+ }
+ },
"ppoll": {
"label": "ppoll()",
"type": "compile",
@@ -540,6 +549,12 @@
"condition": "libs.journald",
"output": [ "privateFeature" ]
},
+ "linkat": {
+ "label": "linkat()",
+ "autoDetect": "config.linux",
+ "condition": "tests.linkat",
+ "output": [ "privateFeature" ]
+ },
"std-atomic64": {
"label": "64 bit atomic operations",
"condition": "libs.libatomic",
diff --git a/src/corelib/global/minimum-linux_p.h b/src/corelib/global/minimum-linux_p.h
index 324744b856..bad2488b4d 100644
--- a/src/corelib/global/minimum-linux_p.h
+++ b/src/corelib/global/minimum-linux_p.h
@@ -67,7 +67,7 @@ QT_BEGIN_NAMESPACE
* - inotify_init1 before 2.6.12-rc12
* - futex(2) before 2.6.12-rc12
* - FUTEX_WAKE_OP 2.6.14 FUTEX_OP
- * - linkat(2) 2.6.17 O_TMPFILE
+ * - linkat(2) 2.6.17 O_TMPFILE && QT_CONFIG(linkat)
* - FUTEX_PRIVATE_FLAG 2.6.22
* - O_CLOEXEC 2.6.23
* - eventfd 2.6.23
diff --git a/src/corelib/global/qconfig-bootstrapped.h b/src/corelib/global/qconfig-bootstrapped.h
index 2164d7f21f..dabb715607 100644
--- a/src/corelib/global/qconfig-bootstrapped.h
+++ b/src/corelib/global/qconfig-bootstrapped.h
@@ -87,6 +87,11 @@
#define QT_FEATURE_futimens -1
#define QT_FEATURE_futimes -1
#define QT_FEATURE_library -1
+#ifdef __linux__
+# define QT_FEATURE_linkat 1
+#else
+# define QT_FEATURE_linkat -1
+#endif
#define QT_NO_QOBJECT
#define QT_FEATURE_process -1
#define QT_FEATURE_renameat2 -1
diff --git a/src/corelib/io/qtemporaryfile_p.h b/src/corelib/io/qtemporaryfile_p.h
index 46a0d7aba3..f74e5680b9 100644
--- a/src/corelib/io/qtemporaryfile_p.h
+++ b/src/corelib/io/qtemporaryfile_p.h
@@ -58,7 +58,7 @@
#include "private/qfile_p.h"
#include "qtemporaryfile.h"
-#ifdef Q_OS_LINUX
+#if defined(Q_OS_LINUX) && QT_CONFIG(linkat)
# include <fcntl.h>
# ifdef O_TMPFILE
// some early libc support had the wrong values for O_TMPFILE