[Buildroot] [PATCH 2/2] package/qt5/qt5base: build with correct optimization

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello,

On Wed, 26 Jun 2019 16:04:12 +0200
Giulio Benetti <giulio.benetti@micronovasrl.com> wrote:

> diff --git a/package/qt5/qt5base/qmake.conf.in b/package/qt5/qt5base/qmake.conf.in
> index 26bee2cb39..4de880d2a2 100644
> --- a/package/qt5/qt5base/qmake.conf.in
> +++ b/package/qt5/qt5base/qmake.conf.in
> @@ -15,6 +15,7 @@ QMAKE_CXX               = $${CROSS_COMPILE}g++
>  # modifications to gcc-base.conf
>  QMAKE_CFLAGS           += $${BR_COMPILER_CFLAGS}
>  QMAKE_CXXFLAGS         += $${BR_COMPILER_CXXFLAGS}
> +QMAKE_CFLAGS_OPTIMIZE_FULL  = $${BR_OPTIMIZATION}
>  CONFIG                 += nostrip
>  
>  QMAKE_LIBS             += -lrt -lpthread -ldl
> diff --git a/package/qt5/qt5base/qt5base.mk b/package/qt5/qt5base/qt5base.mk
> index e4aa76908a..69e90a37b3 100644
> --- a/package/qt5/qt5base/qt5base.mk
> +++ b/package/qt5/qt5base/qt5base.mk
> @@ -361,6 +361,7 @@ define QT5BASE_CONFIGURE_CMDS
>  		-device-option CROSS_COMPILE="$(TARGET_CROSS)" \
>  		-device-option BR_COMPILER_CFLAGS="$(QT5BASE_CFLAGS)" \
>  		-device-option BR_COMPILER_CXXFLAGS="$(QT5BASE_CXXFLAGS)" \
> +		-device-option BR_OPTIMIZATION="$(TARGET_OPTIMIZATION)" \

TARGET_OPTIMIZATION is already inside TARGET_CFLAGS, so it doesn't make
a lot of sense to pass them again. Basically, it's just easier to set
QMAKE_CFLAGS_OPTIMIZE, QMAKE_CFLAGS_OPTIMIZE_FULL,
QMAKE_CFLAGS_OPTIMIZE_SIZE, QMAKE_CFLAGS_OPTIMIZE_DEBUG to the empty
value. See the final commit at:

  https://git.buildroot.org/buildroot/commit/?id=7c0aa83527e0b0179f9e3f73a3e63df1fdc5a6e6

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com