Add check for glibc > 2.16

Fix broken compilation due to "Unable to create small
static TLS block in shared library"

https://sourceware.org/bugzilla/show_bug.cgi?id=14898

Change-Id: I53840dbff22f4b10bdb32401f79889f6c313f470
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/configure.pri b/configure.pri
index 2d6983354..0030ce3bb 100644
--- a/configure.pri
+++ b/configure.pri
@@ -71,6 +71,26 @@ defineTest(qtConfTest_detectFlex) {
     return(true)
 }
 
+defineTest(qtConfTest_detectGlibc) {
+    ldd = $$qtConfFindInPath("ldd")
+    !isEmpty(ldd) {
+        qtLog("Found ldd from path: $$ldd")
+        qtRunLoggedCommand("$$ldd --version", version)|return(true)
+        version ~= 's/^.*[^0-9]\([0-9]*\.[0-9]*\).*$/\1/'
+        version = $$first(version)
+        qtLog("Found libc version: $$version")
+        version = $$split(version,'.')
+        version = $$member(version, 1)
+        greaterThan(version, 16) {
+            return(true)
+        }
+        qtLog("Detected too old version of glibc. Required min 2.17.")
+        return(false)
+    }
+    qtLog("No ldd found. Assuming right version of glibc.")
+    return(true)
+}
+
 defineTest(qtConfTest_detectNinja) {
     ninja = $$qtConfFindInPath("ninja$$EXE_SUFFIX")
     !isEmpty(ninja) {