[Buildroot] [PATCHv3] Config.in: add symbols for BR2_HOST_GCC_AT_LEAST_X_Y
Yann E. MORIN
yann.morin.1998 at free.fr
Wed Dec 30 23:18:39 UTC 2015
THomas, Arnout, All,
On 2015-12-31 00:08 +0100, Thomas Petazzoni spake thusly:
> From: Arnout Vandecappelle <arnout at mind.be>
>
> Some host packages need a recent gcc version. Add symbols to Config.in
> to specify the HOSTCC version. The values are passed through the
> environment, and this environment is generated in a new support script.
>
> Also update the documentation to mention the new symbols.
>
> [Thomas: simplify by using only make logic instead of an external
> shell script.]
>
> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Regards,
Yann E. MORIN.
> ---
> This is an alternate version, in which I've removed the shell script,
> and did everything in make. Contrary to what Arnout said, I don't find
> the sed expression to be more complicated, and the condition on gcc <=
> 4 or gcc >= 5 can easily be done in make.
>
> Config.in | 24 ++++++++++++++++++++++++
> Makefile | 12 ++++++++++++
> docs/manual/adding-packages-directory.txt | 7 +++++++
> 3 files changed, 43 insertions(+)
>
> diff --git a/Config.in b/Config.in
> index 9513cc1..bbbefb0 100644
> --- a/Config.in
> +++ b/Config.in
> @@ -18,6 +18,30 @@ config BR2_EXTERNAL
> string
> option env="BR2_EXTERNAL"
>
> +# Hidden config symbols for packages to check system gcc version
> +config BR2_HOST_GCC_VERSION
> + string
> + option env="HOST_GCC_VERSION"
> +
> +config BR2_HOST_GCC_AT_LEAST_4_7
> + bool
> + default y if BR2_HOST_GCC_VERSION = "47"
> +
> +config BR2_HOST_GCC_AT_LEAST_4_8
> + bool
> + default y if BR2_HOST_GCC_VERSION = "48"
> + select BR2_HOST_GCC_AT_LEAST_4_7
> +
> +config BR2_HOST_GCC_AT_LEAST_4_9
> + bool
> + default y if BR2_HOST_GCC_VERSION = "49"
> + select BR2_HOST_GCC_AT_LEAST_4_8
> +
> +config BR2_HOST_GCC_AT_LEAST_5
> + bool
> + default y if BR2_HOST_GCC_VERSION = "5"
> + select BR2_HOST_GCC_AT_LEAST_4_9
> +
> # Hidden boolean selected by packages in need of Java in order to build
> # (example: xbmc)
> config BR2_NEEDS_HOST_JAVA
> diff --git a/Makefile b/Makefile
> index 1d69192..0cfca6c 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -293,6 +293,17 @@ HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranli
> export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
> export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
>
> +HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
> + sed 's/^.* \([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)[ ]*.*/\1 \2/')
> +
> +# For gcc 4.x, keep the second number around. For gcc >= 5.x, the
> +# major version is enough.
> +ifeq ($(firstword $(HOSTCC_VERSION)),4)
> +HOSTCC_VERSION := $(subst $(space),,$(HOSTCC_VERSION))
> +else
> +HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
> +endif
> +
> # Make sure pkg-config doesn't look outside the buildroot tree
> HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
> unexport PKG_CONFIG_PATH
> @@ -724,6 +735,7 @@ COMMON_CONFIG_ENV = \
> KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
> BR2_CONFIG=$(BR2_CONFIG) \
> BR2_EXTERNAL=$(BR2_EXTERNAL) \
> + HOST_GCC_VERSION=$(HOSTCC_VERSION) \
> SKIP_LEGACY=
>
> xconfig: $(BUILD_DIR)/buildroot-config/qconf outputmakefile
> diff --git a/docs/manual/adding-packages-directory.txt b/docs/manual/adding-packages-directory.txt
> index 139123e..c2d9f75 100644
> --- a/docs/manual/adding-packages-directory.txt
> +++ b/docs/manual/adding-packages-directory.txt
> @@ -283,6 +283,13 @@ use in the comment.
> ** Comment string: +gcc >= X.Y+ and/or `gcc <= X.Y` (replace
> +X.Y+ with the proper version)
>
> +* Host GCC version
> +** Dependency symbol: +BR2_HOST_GCC_AT_LEAST_X_Y+, (replace
> + +X_Y+ with the proper version, see +Config.in+)
> +** Comment string: no comment to be added
> +** Note that it is usually not the package itself that has a minimum
> + host GCC version, but rather a host-package on which it depends.
> +
> * C library
> ** Dependency symbol: +BR2_TOOLCHAIN_USES_GLIBC+,
> +BR2_TOOLCHAIN_USES_MUSL+, +BR2_TOOLCHAIN_USES_UCLIBC+
> --
> 2.6.4
>
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