Clean up the autoconf caching

This makes the stapconf caching process quite a bit more transparent.
The options are now cached in a header file as #defines, and this header
file is a normal build dependency instead of calling so many make
$(shell ...) commands.

  * buildrun.cxx (compile_pass): Pull in autoconf options in a header
  of #defines rather than -DXXX, and make that header a build dependency.
  * buildrun.cxx (output_autoconf): New function to consolidate the
  computation of each autoconf test.
  * cache.cxx (add_to_cache, get_from_cache, clean_cache): Start treating
  the stapconf header as a first-class cached item.
  * cache.h: Move definitions of things only needed in cache.cxx
  * hash.cxx (find_stapconf_hash): Generate stapconf_name as a .h now.
  * main.cxx (main): Default the stapconf_name based on getpid().

1 files changed, 0 insertions, 18 deletions

diff --git a/cache.h b/cache.h
index 1a9827b7..89f44a43 100644
--- a/cache.h
+++ b/cache.h
@@ -1,22 +1,4 @@
-#define SYSTEMTAP_CACHE_MAX_FILENAME "cache_mb_limit"
-#define SYSTEMTAP_CACHE_DEFAULT_MB 64
-
-struct cache_ent_info {
-  std::string path;
-  size_t size;
-  long weight;  //lower == removed earlier
-};
-
-struct weight_sorter {
-  bool operator() (const struct cache_ent_info& c1, const struct cache_ent_info& c2) const
-  { return c1.weight < c2.weight;}
-};
-
 void add_to_cache(systemtap_session& s);
 bool get_from_cache(systemtap_session& s);
-void clean_cache(systemtap_session& s);
-long get_cache_file_size(const std::string &cache_ent_path);
-long get_cache_file_weight(const std::string &cache_ent_path);
-void unlink_cache_entry(const std::string &cache_ent_path);
 
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