diff -Nrup a/src/buildtools/config/linux.pri b/src/buildtools/config/linux.pri
--- a/src/buildtools/config/linux.pri	2020-01-20 12:17:16.000000000 +0100
+++ b/src/buildtools/config/linux.pri	2020-01-28 14:00:22.422793465 +0100
@@ -88,7 +88,9 @@ contains(QT_ARCH, "arm") {
             gn_args += arm_use_neon=false
             # If the toolchain does not explicitly specify to use NEON instructions
             # we use arm_neon_optional for ARMv7
-            equals(MARMV, 7): gn_args += arm_optionally_use_neon=true
+            # Disable NEON entirely for now, if set in the specfile, e.g., to
+            # work around some build failure.
+            # equals(MARMV, 7): gn_args += arm_optionally_use_neon=true
         }
     }