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authorJunio C Hamano <gitster@pobox.com>2014-06-03 12:06:40 -0700
committerJunio C Hamano <gitster@pobox.com>2014-06-03 12:06:40 -0700
commit8eaf517835d0534767d6a54d12d072ce30276ad9 (patch)
tree19368a64c5b367f601fb6ddd77d4c6e903a2df10 /configure.ac
parentf008cef4abb2a4db766b4a152b304aca91a0101a (diff)
parent22f4c27e68f448d5fce316a73ea3f7bab6aa1268 (diff)
downloadgit-8eaf517835d0534767d6a54d12d072ce30276ad9.tar.gz
Merge branch 'ks/tree-diff-nway'
Instead of running N pair-wise diff-trees when inspecting a N-parent merge, find the set of paths that were touched by walking N+1 trees in parallel. These set of paths can then be turned into N pair-wise diff-tree results to be processed through rename detections and such. And N=2 case nicely degenerates to the usual 2-way diff-tree, which is very nice. * ks/tree-diff-nway: mingw: activate alloca combine-diff: speed it up, by using multiparent diff tree-walker directly tree-diff: rework diff_tree() to generate diffs for multiparent cases as well Portable alloca for Git tree-diff: reuse base str(buf) memory on sub-tree recursion tree-diff: no need to call "full" diff_tree_sha1 from show_path() tree-diff: rework diff_tree interface to be sha1 based tree-diff: diff_tree() should now be static tree-diff: remove special-case diff-emitting code for empty-tree cases tree-diff: simplify tree_entry_pathcmp tree-diff: show_path prototype is not needed anymore tree-diff: rename compare_tree_entry -> tree_entry_pathcmp tree-diff: move all action-taking code out of compare_tree_entry() tree-diff: don't assume compare_tree_entry() returns -1,0,1 tree-diff: consolidate code for emitting diffs and recursion in one place tree-diff: show_tree() is not needed tree-diff: no need to pass match to skip_uninteresting() tree-diff: no need to manually verify that there is no mode change for a path combine-diff: move changed-paths scanning logic into its own function combine-diff: move show_log_first logic/action out of paths scanning
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac8
1 files changed, 8 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index b7112542b4..4b1ae7c3c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -272,6 +272,14 @@ AS_HELP_STRING([], [ARG can be also prefix for libpcre library and hea
GIT_CONF_SUBST([LIBPCREDIR])
fi)
#
+# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
+AC_FUNC_ALLOCA
+case $ac_cv_working_alloca_h in
+ yes) HAVE_ALLOCA_H=YesPlease;;
+ *) HAVE_ALLOCA_H='';;
+esac
+GIT_CONF_SUBST([HAVE_ALLOCA_H])
+#
# Define NO_CURL if you do not have curl installed. git-http-pull and
# git-http-push are not built, and you cannot use http:// and https://
# transports.