[Buildroot] [PATCH] qt5: use ccache for building host code
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Sat Oct 20 13:25:35 UTC 2018
qt5 currently doesn't use HOSTCC/HOSTCXX, so it doesn't use ccache
when building all its host code (especially qmake). This means that
even with ccache enabled and a hot cache, it still takes a long time
to build qt5base.
Before this patch, building qt5base takes:
- 446 seconds with a cold ccache
- 185 seconds with a hot ccache
This is because the ccache is not used for host code.
After this patch, building qt5base takes:
- 450 seconds with a cold ccache
- 15 seconds with a hot ccache
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
package/qt5/qt5base/qt5base.mk | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/package/qt5/qt5base/qt5base.mk b/package/qt5/qt5base/qt5base.mk
index ab2b883fc4..d9f7af7196 100644
--- a/package/qt5/qt5base/qt5base.mk
+++ b/package/qt5/qt5base/qt5base.mk
@@ -264,6 +264,13 @@ define QT5BASE_CONFIGURE_ARCH_CONFIG
endef
endif
+# This allows to use ccache when available
+define QT5BASE_CONFIGURE_HOSTCC
+ $(SED) 's,^QMAKE_COMPILER\s*=.*,QMAKE_COMPILER=$(HOSTCC),' $(@D)/mkspecs/common/g++-base.conf
+ $(SED) 's,^QMAKE_CC\s*=.*,QMAKE_CC=$(HOSTCC),' $(@D)/mkspecs/common/g++-base.conf
+ $(SED) 's,^QMAKE_CXX\s*=.*,QMAKE_CXX=$(HOSTCXX),' $(@D)/mkspecs/common/g++-base.conf
+endef
+
define QT5BASE_CONFIGURE_CMDS
mkdir -p $(@D)/mkspecs/devices/linux-buildroot-g++/
sed 's/@EGLFS_DEVICE@/$(QT5BASE_EGLFS_DEVICE)/g' \
@@ -274,6 +281,7 @@ define QT5BASE_CONFIGURE_CMDS
$(QT5BASE_CONFIGURE_CONFIG_FILE)
touch $(QT5BASE_ARCH_CONFIG_FILE)
$(QT5BASE_CONFIGURE_ARCH_CONFIG)
+ $(QT5BASE_CONFIGURE_HOSTCC)
(cd $(@D); \
$(TARGET_MAKE_ENV) \
PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
--
2.14.4
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