2babed4a50
When NPTL support was introduced, gcc required a three stages build process. Since gcc 4.7, this is no longer necessary, and it is possible to get back to a two stages build process. This patch takes advantage of this, by doing a two stages build process when possible. We introduce a few hidden kconfig options: * BR2_GCC_VERSION_NEEDS_THREE_STAGE_BUILD, which is set by the gcc Config.in logic to indicate that the compiler might need a three stages build. Currently, all versions prior to 4.7.x are selecting this kconfig option. * BR2_TOOLCHAIN_LIBC_NEEDS_THREE_STAGE_BUILD, which indicates whether the C library might need a three stages build. This is the case for eglibc, and uClibc when NPTL is enabled. * BR2_TOOLCHAIN_NEEDS_THREE_STAGE_BUILD finally is enabled when both of the previous options are enabled. It indicates that a three stages build is actually needed. In addition to those options, the uClibc/gcc build logic is changed to use only a two stages build process when possible. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
52 lines
1.4 KiB
Makefile
52 lines
1.4 KiB
Makefile
################################################################################
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#
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# gcc-initial
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#
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################################################################################
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GCC_INITIAL_VERSION = $(GCC_VERSION)
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GCC_INITIAL_SITE = $(GCC_SITE)
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GCC_INITIAL_SOURCE = $(GCC_SOURCE)
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HOST_GCC_INITIAL_DEPENDENCIES = $(HOST_GCC_COMMON_DEPENDENCIES)
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HOST_GCC_INITIAL_EXTRACT_CMDS = $(HOST_GCC_EXTRACT_CMDS)
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ifneq ($(call qstrip, $(BR2_XTENSA_CORE_NAME)),)
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HOST_GCC_INITIAL_POST_EXTRACT_CMDS += HOST_GCC_XTENSA_OVERLAY_EXTRACT
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endif
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HOST_GCC_INITIAL_POST_PATCH_HOOKS += HOST_GCC_APPLY_PATCHES
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# gcc doesn't support in-tree build, so we create a 'build'
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# subdirectory in the gcc sources, and build from there.
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HOST_GCC_INITIAL_SUBDIR = build
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HOST_GCC_INITIAL_PRE_CONFIGURE_HOOKS += HOST_GCC_CONFIGURE_SYMLINK
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HOST_GCC_INITIAL_CONF_OPT = \
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$(HOST_GCC_COMMON_CONF_OPT) \
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--enable-languages=c \
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--disable-shared \
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--without-headers \
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--disable-threads \
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--with-newlib \
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--disable-largefile \
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--disable-nls \
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$(call qstrip,$(BR2_EXTRA_GCC_CONFIG_OPTIONS))
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HOST_GCC_INITIAL_CONF_ENV = \
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$(HOST_GCC_COMMON_CONF_ENV)
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HOST_GCC_INITIAL_MAKE_OPT = all-gcc
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HOST_GCC_INITIAL_INSTALL_OPT = install-gcc
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ifeq ($(BR2_TOOLCHAIN_NEEDS_THREE_STAGE_BUILD),)
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ifeq ($(BR2_GCC_SUPPORTS_FINEGRAINEDMTUNE),y)
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HOST_GCC_INITIAL_MAKE_OPT += all-target-libgcc
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HOST_GCC_INITIAL_INSTALL_OPT += install-target-libgcc
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endif
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endif
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$(eval $(host-autotools-package))
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