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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>
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47
cgit.mk
47
cgit.mk
@ -25,23 +25,50 @@ ifdef NO_C99_FORMAT
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CFLAGS += -DNO_C99_FORMAT
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endif
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nullstring :=
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fourspace := $(nullstring)
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ifdef NO_LUA
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CFLAGS += -DNO_LUA
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$(info $(fourspace)* building without specified Lua support)
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CGIT_CFLAGS += -DNO_LUA
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else
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ifeq (VANILLA,$(LUA_IMPLEMENTATION))
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CFLAGS += -llua
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else
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LUAJIT_LIBS := $(shell pkg-config --libs luajit)
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LUAJIT_CFLAGS := $(shell pkg-config --cflags luajit)
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LUAJIT_CFLAGS := $(shell pkg-config --cflags luajit 2>/dev/null)
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LUAJIT_LIBS := $(shell pkg-config --libs luajit 2>/dev/null)
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LUA_LIBS := $(shell pkg-config --libs lua 2>/dev/null)
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LUA_CFLAGS := $(shell pkg-config --cflags lua 2>/dev/null)
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ifeq (JIT,$(LUA_IMPLEMENTATION))
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ifeq ($(strip $(LUAJIT_LIBS)),)
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$(error LuaJIT specified via LUA_IMPLEMENTATION=JIT, but library could not be found.)
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endif
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$(info $(fourspace)* building with selected LuaJIT)
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CGIT_LIBS += $(LUAJIT_LIBS)
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CFLAGS += $(LUAJIT_CFLAGS)
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CGIT_CFLAGS += $(LUAJIT_CFLAGS)
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else ifeq (VANILLA,$(LUA_IMPLEMENTATION))
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ifeq ($(strip $(LUA_LIBS)),)
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$(error Lua specified via LUA_IMPLEMENTATION=VANILLA, but library could not be found.)
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endif
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$(info $(fourspace)* building with selected Lua)
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CGIT_LIBS += $(LUA_LIBS)
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CGIT_LIBS += $(LUA_CFLAGS)
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else ifneq ($(strip $(LUAJIT_LIBS)),)
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$(info $(fourspace)* building with autodetected LuaJIT)
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CGIT_LIBS += $(LUAJIT_LIBS)
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CGIT_CFLAGS += $(LUAJIT_CFLAGS)
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else ifneq ($(strip $(LUA_LIBS)),)
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$(info $(fourspace)* building with autodetected Lua)
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CGIT_LIBS += $(LUA_LIBS)
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CGIT_CFLAGS += $(LUA_CFLAGS)
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else
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$(info $(fourspace)* building without autodetected Lua support)
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NO_LUA := YesPlease
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CGIT_CFLAGS += -DNO_LUA
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endif
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endif
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CGIT_LIBS += -ldl
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# Add -ldl to linker flags on non-BSD systems.
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ifeq ($(findstring BSD,$(uname_S)),)
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CGIT_LIBS += -ldl
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endif
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CGIT_OBJ_NAMES += cgit.o
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