[PATCH v3 0/4] Makefile improvements

[John Keeping]

I realised that we already have a global cgit_version so that ui-patch.c
doesn't need to reference the #define'd CGIT_VERSION, meaning that we
can reduce the set of files using that definition to cgit.c.  Patch 2
(new) changes this.

Patch 3 (previously patch 2) is modified to remove ui-patch.c from the
list of files that depend on CGIT_VERSION.

Patch 4 is a new unrelated change to fix the build on systems with
unusual shells in "/bin/sh".

John Keeping (4):
  Makefile: re-use Git's Makefile where possible
  ui-patch: use cgit_version not CGIT_VERSION
  cgit.mk: don't rebuild everything if CGIT_VERSION changes
  cgit.mk: Use SHELL_PATH_SQ to run gen-version.sh

 .gitignore |   1 +
 Makefile   | 124 +++----------------------------------------------------------
 cgit.mk    |  81 ++++++++++++++++++++++++++++++++++++++++
 ui-patch.c |   2 +-
 4 files changed, 88 insertions(+), 120 deletions(-)
 create mode 100644 cgit.mk

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1.8.2.rc2.4.g7799588