General improvements for Lua 5.1 and 5.2 coexistance:

* Add --versioned-rocks-dir option to Unix installer, which makes it use paths such as /lib/luarocks/rocks-5.X, and /etc/luarocks/config-5.X.lua (where X is 1 or 2).
* Make configure script on Unix autodetect the presence of previous LuaRocks installations and adapt accordingly to avoid conflicts.
* Support luarocks.site_config_5_X for users who wish to run two versions from the same source tree (may be useful for LR development).
* Try to load config-5.X.lua from home directory before trying config.lua.

1 files changed, 11 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index dc37529b..a102b2be 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ manif_core.lua fetch.lua unpack.lua validate.lua cfg.lua download.lua \
 help.lua util.lua index.lua cache.lua refresh_cache.lua loader.lua \
 admin_remove.lua fetch/hg.lua fetch/git_file.lua new_version.lua lint.lua purge.lua
 
-CONFIG_FILE = $(SYSCONFDIR)/config.lua
+CONFIG_FILE = $(SYSCONFDIR)/config-$(LUA_VERSION).lua
 
 all: built
 
@@ -51,7 +51,7 @@ src/luarocks/site_config.lua: config.unix
         fi
         if [ -n "$(SYSCONFDIR)" ] ;\
         then \
-           echo "LUAROCKS_SYSCONFIG=[[$(SYSCONFDIR)/config.lua]]" >> src/luarocks/site_config.lua ;\
+           echo "LUAROCKS_SYSCONFDIR=[[$(SYSCONFDIR)]]" >> src/luarocks/site_config.lua ;\
         fi
         if [ -n "$(ROCKS_TREE)" ] ;\
         then \
@@ -61,6 +61,10 @@ src/luarocks/site_config.lua: config.unix
         then \
            echo "LUAROCKS_FORCE_CONFIG=true" >> src/luarocks/site_config.lua ;\
         fi
+        if [ -n "$(LUAROCKS_ROCKS_SUBDIR)" ] ;\
+        then \
+           echo "LUAROCKS_ROCKS_SUBDIR=[[$(LUAROCKS_ROCKS_SUBDIR)]]" >> src/luarocks/site_config.lua ;\
+        fi
         if [ "$(LUA_DIR_SET)" = "yes" ] ;\
         then \
            echo "LUA_DIR_SET=true" >> src/luarocks/site_config.lua ;\
@@ -121,7 +125,11 @@ clean: cleanup_bins
 
 install_bins: built
         mkdir -p "$(DESTDIR)$(BINDIR)"
-        cd src/bin && cp $(BIN_FILES) "$(DESTDIR)$(BINDIR)"
+        cd src/bin && for f in $(BIN_FILES); \
+        do \
+           cp "$$f" "$(DESTDIR)$(BINDIR)/$$f-$(LUA_VERSION)"; \
+           ln -nfs "$(DESTDIR)$(BINDIR)/$$f-$(LUA_VERSION)" "$(DESTDIR)$(BINDIR)/$$f"; \
+        done
 
 install_luas: built
         mkdir -p "$(DESTDIR)$(LUADIR)/luarocks"