On 1/26/17 1:57 AM, Yannick Gicquel wrote:
> This allows ccache usage for recipes which inherit cmake.bbclass.
> Since cmake v3.4, it can be enabled using some "-D" options.
>
> Here below are some metrics while using it for webkitgtk recipe.
> (machine is a 4x core i7 @ 3.4GHz)
>
> $ bitbake -c fetchall webkitgtk
> $ time bitbake webkitgtk
> <snip>
> real 56m25.191s
> user 359m32.003s
> sys 34m49.356s
>
> $ bitbake -c clean webkitgtk
> $ bitbake -c cleansstate webkitgtk
> $ time bitbake webkitgtk
> <snip>
> real 25m19.298s
> user 17m57.861s
> sys 6m20.157s
This looks lucerative. However, does this work with cmake in all cmake
based recipes would be interesting to know.
>
> Signed-off-by: Yannick Gicquel <yannick.gicq...@iot.bzh>
> ---
> meta/classes/cmake.bbclass | 14 +++++++++-----
> 1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/meta/classes/cmake.bbclass b/meta/classes/cmake.bbclass
> index 9e74599..737a4e0 100644
> --- a/meta/classes/cmake.bbclass
> +++ b/meta/classes/cmake.bbclass
> @@ -4,12 +4,9 @@ OECMAKE_SOURCEPATH ?= "${S}"
> DEPENDS_prepend = "cmake-native "
> B = "${WORKDIR}/build"
>
> -# We need to unset CCACHE otherwise cmake gets too confused
> -CCACHE = ""
> -
> # C/C++ Compiler (without cpu arch/tune arguments)
> -OECMAKE_C_COMPILER ?= "`echo ${CC} | sed 's/^\([^ ]*\).*/\1/'`"
> -OECMAKE_CXX_COMPILER ?= "`echo ${CXX} | sed 's/^\([^ ]*\).*/\1/'`"
> +OECMAKE_C_COMPILER ?= "${@'${CC}'.replace('${CCACHE}','',1).split(' ')[0]}"
> +OECMAKE_CXX_COMPILER ?= "${@'${CXX}'.replace('${CCACHE}','',1).split('
> ')[0]}"
> OECMAKE_AR ?= "${AR}"
>
> # Compiler flags
> @@ -108,9 +105,16 @@ cmake_do_configure() {
> OECMAKE_SITEFILE=""
> fi
>
> + if [ -n "${CCACHE}" ]; then
> + OECMAKE_CCACHE="-DCMAKE_C_COMPILER_LAUNCHER=${CCACHE}
> -DCMAKE_CXX_COMPILER_LAUNCHER=${CCACHE}"
> + else
> + OECMAKE_CCACHE=""
> + fi
> +
> cmake \
> ${OECMAKE_SITEFILE} \
> ${OECMAKE_SOURCEPATH} \
> + ${OECMAKE_CCACHE} \
> -DCMAKE_INSTALL_PREFIX:PATH=${prefix} \
> -DCMAKE_INSTALL_BINDIR:PATH=${@os.path.relpath(d.getVar('bindir'),
> d.getVar('prefix'))} \
> -DCMAKE_INSTALL_SBINDIR:PATH=${@os.path.relpath(d.getVar('sbindir'),
> d.getVar('prefix'))} \
>
--
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