ccache: provide capability to do initial ccache setup

For example, if your project is known to require more space than the
default max cache size, then you might want to increase the cache size
to a suitable amount using the -M (--max-size) option.

The string you specify here is passed verbatim to ccache.  Refer to
ccache documentation for more details.

These initial settings are applied after ccache has been compiled.

Signed-off-by: Danomi Manchego <danomimanchego123@gmail.com>
Reviewed-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Tested-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/Config.in b/Config.in
index f13ae367d0a314aa457627f202c22e2883eadfe9..bf1ca864d6caa5a66b88c81171d648c18983ebb1 100644 (file)
--- a/Config.in
+++ b/Config.in
@@ -266,7 +266,7 @@ config BR2_CCACHE
        help
          This option will enable the use of ccache, a compiler
          cache. It will cache the result of previous builds to speed
-         up future builds. The cache is stored in
+         up future builds. By default, the cache is stored in
          $HOME/.buildroot-ccache.
 
          Note that Buildroot does not try to invalidate the cache
@@ -276,13 +276,30 @@ config BR2_CCACHE
          ccache cache by removing the $HOME/.buildroot-ccache
          directory.
 
+if BR2_CCACHE
+
 config BR2_CCACHE_DIR
        string "Compiler cache location"
-       depends on BR2_CCACHE
        default "$(HOME)/.buildroot-ccache"
        help
          Where ccache should store cached files.
 
+config BR2_CCACHE_INITIAL_SETUP
+       string "Compiler cache initial setup"
+       help
+         Initial ccache settings to apply, such as --max-files or --max-size.
+
+         For example, if your project is known to require more space than the
+         default max cache size, then you might want to increase the cache size
+         to a suitable amount using the -M (--max-size) option.
+
+         The string you specify here is passed verbatim to ccache.  Refer to
+         ccache documentation for more details.
+
+         These initial settings are applied after ccache has been compiled.
+
+endif
+
 config BR2_DEPRECATED
        bool "Show packages that are deprecated or obsolete"
        help

diff --git a/package/ccache/ccache.mk b/package/ccache/ccache.mk
index df92c5e9947d21ab3f39c84db66322304cefbe46..f1ec16257ac4201692172ee093f9a7d8b7810809 100644 (file)
--- a/package/ccache/ccache.mk
+++ b/package/ccache/ccache.mk
@@ -38,15 +38,25 @@ define HOST_CCACHE_PATCH_CONFIGURATION
        sed -i 's,"%s/.ccache","$(BR_CACHE_DIR)",' $(@D)/ccache.c
 endef
 
-HOST_CCACHE_POST_CONFIGURE_HOOKS += \
-       HOST_CCACHE_PATCH_CONFIGURATION
+HOST_CCACHE_POST_CONFIGURE_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
+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))