pkg-autotools: use --disable-dependency-tracking
By default, automake does "dependency tracking", which allows the generated Makefile to contain the necessary dependencies to automatically rebuild the appropriate C files when included header files are changed. This dependency tracking is nice when doing active development on the package, but not really useful when doing a one-time build of the package. According to automake's documentation[1], disabling the dependency tracking provides a small speed-up. In some very unscientific measurements (i.e repeated only once), we have noticed a ~3.6% reduction of the total build time of a Buildroot toolchain after applying this patch. [1] http://www.gnu.org/software/automake/manual/html_node/Dependency-Tracking.html Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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@ -140,6 +140,7 @@ define $(2)_CONFIGURE_CMDS
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--disable-documentation \
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--with-xmlto=no \
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--with-fop=no \
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--disable-dependency-tracking \
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$$(DISABLE_NLS) \
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$$(DISABLE_LARGEFILE) \
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$$(DISABLE_IPV6) \
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@ -169,6 +170,7 @@ define $(2)_CONFIGURE_CMDS
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--disable-documentation \
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--with-xmlto=no \
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--with-fop=no \
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--disable-dependency-tracking \
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$$(QUIET) $$($$(PKG)_CONF_OPT) \
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)
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endef
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