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Config.in: add symbols for BR2_HOST_GCC_AT_LEAST_X_Y

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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@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Arnout Vandecappelle 2015-12-31 01:34:13 +01:00 committed by Thomas Petazzoni
parent 449803965c
commit 12825f7af5
3 changed files with 40 additions and 0 deletions
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24
Config.in
View File

@ -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 = "4 7"
config BR2_HOST_GCC_AT_LEAST_4_8
bool
default y if BR2_HOST_GCC_VERSION = "4 8"
select BR2_HOST_GCC_AT_LEAST_4_7
config BR2_HOST_GCC_AT_LEAST_4_9
bool
default y if BR2_HOST_GCC_VERSION = "4 9"
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

9
Makefile
View File

@ -293,6 +293,14 @@ HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranli
export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
sed -n -r 's/^.* ([0-9]*)\.([0-9]*)\.([0-9]*)[ ]*.*/\1 \2/p')
# For gcc >= 5.x, we only need the major version.
ifneq ($(firstword $(HOSTCC_VERSION)),4)
HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
endif
# Make sure pkg-config doesn't look outside the buildroot tree
HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
unexport PKG_CONFIG_PATH
@ -724,6 +732,7 @@ COMMON_CONFIG_ENV = \
KCONFIG_TRISTATE=$(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

7
docs/manual/adding-packages-directory.txt
View File

@ -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+