new file mode 100644
@@ -0,0 +1,60 @@
+From b1fb963cfc5c164663e78d948eb8482d0ab80edb Mon Sep 17 00:00:00 2001
+From: Peter Seiderer <ps.report@gmx.net>
+Date: Thu, 20 Feb 2020 20:16:53 +0100
+Subject: [PATCH] force rpi zero compile flags
+
+Signed-off-by: Peter Seiderer <ps.report@gmx.net>
+---
+ src/3rdparty/chromium/build/config/arm.gni | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/src/3rdparty/chromium/build/config/arm.gni b/src/3rdparty/chromium/build/config/arm.gni
+index abd4dd02f..8c0f4c979 100644
+--- a/src/3rdparty/chromium/build/config/arm.gni
++++ b/src/3rdparty/chromium/build/config/arm.gni
+@@ -13,35 +13,35 @@ if (current_cpu == "arm" || v8_current_cpu == "arm") {
+ declare_args() {
+ # Version of the ARM processor when compiling on ARM. Ignored on non-ARM
+ # platforms.
+- arm_version = 7
++ arm_version = 6
+
+ # The ARM architecture. This will be a string like "armv6" or "armv7-a".
+ # An empty string means to use the default for the arm_version.
+- arm_arch = ""
++ arm_arch = "armv6kz+fp"
+
+ # The ARM floating point hardware. This will be a string like "neon" or
+ # "vfpv3". An empty string means to use the default for the arm_version.
+- arm_fpu = ""
++ arm_fpu = "vfp"
+
+ # The ARM floating point mode. This is either the string "hard", "soft", or
+ # "softfp". An empty string means to use the default one for the
+ # arm_version.
+- arm_float_abi = ""
++ arm_float_abi = "hard"
+
+ # The ARM variant-specific tuning mode. This will be a string like "armv6"
+ # or "cortex-a15". An empty string means to use the default for the
+ # arm_version.
+- arm_tune = ""
++ arm_tune = "arm1176jzf-s"
+
+ # Whether to use the neon FPU instruction set or not.
+- arm_use_neon = ""
++ arm_use_neon = "false"
+
+ # Whether to enable optional NEON code paths.
+ arm_optionally_use_neon = false
+
+ # Thumb is a reduced instruction set available on some ARM processors that
+ # has increased code density.
+- arm_use_thumb = true
++ arm_use_thumb = false
+ }
+
+ assert(arm_float_abi == "" || arm_float_abi == "hard" ||
+--
+2.25.0
+
The qt5webengine configure simple takes QT_ARCH ('arm') to determine the chromium compiler flags resulting in wrong defaults for the rpi zero case (resulting in illegal instruction failure), e.g.: -march=armv7-a -mfloat-abi=hard -mtune=generic-armv7-a -mfpu=vfpv3-d16 Add patch to overwrite the chromium settings with suitable values for the rpi zero case in the file rc/3rdparty/chromium/build/config/arm.gni. Fixes: $ /usr/lib/qt/examples/webengine/minimal/minimal Illegal instruction Signed-off-by: Peter Seiderer <ps.report@gmx.net> --- Notes: - Work-In-Progress patch to test the prinziple of chromium configuration for the rpi zero case, do not apply. A real fix should set the values in arm.gni determined from the buildroot configuration. --- .../0002-force-rpi-zero-compile-flags.patch | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 package/qt5/qt5webengine/5.12.7/0002-force-rpi-zero-compile-flags.patch