--- a/mkspecs/features/functions.prf

+++ b/mkspecs/features/functions.prf

@@ -100,6 +100,7 @@ defineReplace(gnPdfArgs) {

 defineReplace(gnArch) {

     qtArch = $$1

+    contains(qtArch, "power64"): return(ppc64)

     contains(qtArch, "i386"): return(x86)

     contains(qtArch, "x86_64"): return(x64)

     contains(qtArch, "arm"): return(arm)

--- a/configure.pri

+++ b/configure.pri

@@ -140,6 +140,7 @@ defineTest(qtConfTest_detectPlatform) {

 }

 defineTest(qtConfTest_detectArch) {

+    contains(QT_ARCH, "power64"): return(true)

     contains(QT_ARCH, "i386")|contains(QT_ARCH, "x86_64"): return(true)

     contains(QT_ARCH, "arm")|contains(QT_ARCH, "arm64"): return(true)

     contains(QT_ARCH, "mips"): return(true)

--- a/src/buildtools/config/linux.pri

+++ b/src/buildtools/config/linux.pri

@@ -14,6 +14,7 @@ gn_args += \

     linux_use_bundled_binutils=false \

     use_udev=true \

     use_bundled_fontconfig=false \

+    use_jumbo_build=false \

     use_sysroot=false \

     enable_session_service=false \

     is_cfi=false \