[PATCH] autoconf: Use autoconf to write installation directories to config.mak

[Jakub Narebski <jnareb@gmail.com>]

This is beginning of patch series introducing installation configuration
using autoconf (and no other autotools) to git. The idea is to generate
config.mak using ./configure (generated from configure.ac) from
config.mak.in, so one can use autoconf as an _alternative_ to ordinary
Makefile, and creating one's own config.mak.

This patch includes minimal configure.ac and config.mak.in, so one 
can set installation directories using ./configure script
e.g. ./configure --prefix=/usr

Ignoring files generated by running autoconf and ./configure

Signed-off-by: Jakub Narebski <jnareb@gmail.com>

---

One of the ideas is to use in .spec RPM macro %configure which takes
care of setting all installation directories correctly.

Thoughts?

 .gitignore    |    4 ++++
 config.mak.in |   12 ++++++++++++
 configure.ac  |   11 +++++++++++
 3 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/.gitignore b/.gitignore
index 7b954d5..b0dd54d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -136,3 +136,7 @@ git-core.spec
 *.py[co]
 config.mak
 git-blame
+autom4te.cache
+config.log
+config.status
+configure
diff --git a/config.mak.in b/config.mak.in
new file mode 100644
index 0000000..82d80e2
--- /dev/null
+++ b/config.mak.in
@@ -0,0 +1,12 @@
+# git Makefile configuration, included in main Makefile
+# @configure_input@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+bindir = @bindir@
+#gitexecdir = @libexecdir@/git-core/
+template_dir = @datadir@/git-core/templates/
+GIT_PYTHON_DIR = @datadir@/git-core/python
+
+srcdir = @srcdir@
+VPATH = @srcdir@
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..4003ff6
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,11 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.59)
+AC_INIT([git], [1.4.0], [git@vger.kernel.org])
+
+AC_CONFIG_SRCDIR([git.c])
+
+# Output files
+AC_CONFIG_FILES([config.mak])
+AC_OUTPUT
-- 
1.4.0