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authorJason A. Donenfeld <Jason@zx2c4.com>2014-01-14 00:50:31 +0000
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-14 01:00:07 +0000
commit3488d124052f5c3ddef303ed5306ad6a458794c1 (patch)
tree5cf1db9e99eae07c64158f9464a6c25e5882008b
parentd3c0370a3f108121642d02bbd190ce676bb4772b (diff)
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makefile: auto-detect presence of various Lua, bsd
We favor LuaJIT over Lua. We disable Lua if neither can be found. We error out if a particular Lua is specified via LUA_IMPLEMENTATION=JIT or LUA_IMPLEMENTATION=VANILLA, but cannot be found. We print a status message depending on what happens. Also, we do not link against libdl on the BSDs, since they include it as part of libc. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
-rw-r--r--cgit.mk47
1 files changed, 37 insertions, 10 deletions
diff --git a/cgit.mk b/cgit.mk
index 25f2eab..deef9a7 100644
--- a/cgit.mk
+++ b/cgit.mk
@@ -25,23 +25,50 @@ ifdef NO_C99_FORMAT
CFLAGS += -DNO_C99_FORMAT
endif
+nullstring :=
+fourspace := $(nullstring)
ifdef NO_LUA
- CFLAGS += -DNO_LUA
+ $(info $(fourspace)* building without specified Lua support)
+ CGIT_CFLAGS += -DNO_LUA
else
-
-ifeq (VANILLA,$(LUA_IMPLEMENTATION))
- CFLAGS += -llua
-else
- LUAJIT_LIBS := $(shell pkg-config --libs luajit)
- LUAJIT_CFLAGS := $(shell pkg-config --cflags luajit)
+LUAJIT_CFLAGS := $(shell pkg-config --cflags luajit 2>/dev/null)
+LUAJIT_LIBS := $(shell pkg-config --libs luajit 2>/dev/null)
+LUA_LIBS := $(shell pkg-config --libs lua 2>/dev/null)
+LUA_CFLAGS := $(shell pkg-config --cflags lua 2>/dev/null)
+ifeq (JIT,$(LUA_IMPLEMENTATION))
+ ifeq ($(strip $(LUAJIT_LIBS)),)
+ $(error LuaJIT specified via LUA_IMPLEMENTATION=JIT, but library could not be found.)
+ endif
+ $(info $(fourspace)* building with selected LuaJIT)
+ CGIT_LIBS += $(LUAJIT_LIBS)
+ CGIT_CFLAGS += $(LUAJIT_CFLAGS)
+else ifeq (VANILLA,$(LUA_IMPLEMENTATION))
+ ifeq ($(strip $(LUA_LIBS)),)
+ $(error Lua specified via LUA_IMPLEMENTATION=VANILLA, but library could not be found.)
+ endif
+ $(info $(fourspace)* building with selected Lua)
+ CGIT_LIBS += $(LUA_LIBS)
+ CGIT_LIBS += $(LUA_CFLAGS)
+else ifneq ($(strip $(LUAJIT_LIBS)),)
+ $(info $(fourspace)* building with autodetected LuaJIT)
CGIT_LIBS += $(LUAJIT_LIBS)
- CFLAGS += $(LUAJIT_CFLAGS)
+ CGIT_CFLAGS += $(LUAJIT_CFLAGS)
+else ifneq ($(strip $(LUA_LIBS)),)
+ $(info $(fourspace)* building with autodetected Lua)
+ CGIT_LIBS += $(LUA_LIBS)
+ CGIT_CFLAGS += $(LUA_CFLAGS)
+else
+ $(info $(fourspace)* building without autodetected Lua support)
+ NO_LUA := YesPlease
+ CGIT_CFLAGS += -DNO_LUA
endif
endif
-CGIT_LIBS += -ldl
-
+# Add -ldl to linker flags on non-BSD systems.
+ifeq ($(findstring BSD,$(uname_S)),)
+ CGIT_LIBS += -ldl
+endif
CGIT_OBJ_NAMES += cgit.o