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[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / buildroot-2015.05 / package / ccache / ccache.mk

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/ccache/ccache.mk b/cirros-testvm/src-cirros/buildroot-2015.05/package/ccache/ccache.mk
new file mode 100644 (file)
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+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/ccache/ccache.mk
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+################################################################################
+#
+# ccache
+#
+################################################################################
+
+CCACHE_VERSION = 3.2.1
+CCACHE_SITE = http://samba.org/ftp/ccache
+CCACHE_SOURCE = ccache-$(CCACHE_VERSION).tar.xz
+CCACHE_LICENSE = GPLv3+, others
+CCACHE_LICENSE_FILES = LICENSE.txt GPL-3.0.txt
+
+# Force ccache to use its internal zlib. The problem is that without
+# this, ccache would link against the zlib of the build system, but we
+# might build and install a different version of zlib in $(O)/host
+# afterwards, which ccache will pick up. This might break if there is
+# a version mismatch. A solution would be to add host-zlib has a
+# dependency of ccache, but it would require tuning the zlib .mk file
+# to use HOSTCC_NOCCACHE as the compiler. Instead, we take the easy
+# path: tell ccache to use its internal copy of zlib, so that ccache
+# has zero dependency besides the C library.
+HOST_CCACHE_CONF_OPTS += --with-bundled-zlib
+
+# Patch host-ccache as follows:
+#  - Use BR_CACHE_DIR instead of CCACHE_DIR, because CCACHE_DIR
+#    is already used by autotargets for the ccache package.
+#    BR_CACHE_DIR is exported by Makefile based on config option
+#    BR2_CCACHE_DIR.
+#  - ccache shouldn't use the compiler binary mtime to detect a change in
+#    the compiler, because in the context of Buildroot, that completely
+#    defeats the purpose of ccache. Of course, that leaves the user
+#    responsible for purging its cache when the compiler changes.
+#  - Change hard-coded last-ditch default to match path in .config, to avoid
+#    the need to specify BR_CACHE_DIR when invoking ccache directly.
+define HOST_CCACHE_PATCH_CONFIGURATION
+       sed -i 's,getenv("CCACHE_DIR"),getenv("BR_CACHE_DIR"),' $(@D)/ccache.c
+       sed -i 's,conf->compiler_check = x_strdup("mtime"),conf->compiler_check = x_strdup("none"),' $(@D)/conf.c
+       sed -i 's,"%s/.ccache","$(BR_CACHE_DIR)",' $(@D)/conf.c
+endef
+
+HOST_CCACHE_POST_PATCH_HOOKS += HOST_CCACHE_PATCH_CONFIGURATION
+
+define HOST_CCACHE_MAKE_CACHE_DIR
+       mkdir -p $(BR_CACHE_DIR)
+endef
+
+HOST_CCACHE_POST_INSTALL_HOOKS += HOST_CCACHE_MAKE_CACHE_DIR
+
+# Provide capability to do initial ccache setup (e.g. increase default size)
+BR_CCACHE_INITIAL_SETUP = $(call qstrip,$(BR2_CCACHE_INITIAL_SETUP))
+ifneq ($(BR_CCACHE_INITIAL_SETUP),)
+define HOST_CCACHE_DO_INITIAL_SETUP
+       @$(call MESSAGE,"Applying initial settings")
+       $(CCACHE) $(BR_CCACHE_INITIAL_SETUP)
+       $(CCACHE) -s
+endef
+
+HOST_CCACHE_POST_INSTALL_HOOKS += HOST_CCACHE_DO_INITIAL_SETUP
+endif
+
+$(eval $(host-autotools-package))
+
+ifeq ($(BR2_CCACHE),y)
+ccache-stats: host-ccache
+       $(Q)$(CCACHE) -s
+
+ccache-options: host-ccache
+ifeq ($(CCACHE_OPTIONS),)
+       $(Q)echo "Usage: make ccache-options CCACHE_OPTIONS=\"opts\""
+       $(Q)echo "where 'opts' corresponds to one or more valid ccache options" \
+       "(see ccache help text below)"
+       $(Q)echo
+endif
+       $(Q)$(CCACHE) $(CCACHE_OPTIONS)
+endif