1 files changed, 114 insertions, 0 deletions

diff --git a/Shared.mk b/Shared.mk
new file mode 100644
index 0000000..56c951c
--- /dev/null
+++ b/Shared.mk
@@ -0,0 +1,114 @@
+CC= g++ -std=c++20
+
+# LuaRocks gives 'LIBFLAG' from the outside
+#
+LIBFLAG=-shared
+
+OPT_FLAGS=-O2
+#         -O0 -g
+
+ifeq "$(findstring MINGW,$(shell uname -s))" "MINGW"
+  # MinGW MSYS on Windows
+  #
+  _SO=dll
+  _LUAEXT=.exe
+  TIME=timeit.exe
+else
+  _SO=so
+  _LUAEXT=
+endif
+
+ifeq "$(LUAROCKS)" ""
+  ifeq "$(findstring MINGW,$(shell uname -s))" "MINGW"
+    # MinGW MSYS on Windows
+    #
+    # - 'lua' and 'luac' expected to be on the path
+    # - %LUA_DEV% must lead to include files and libraries (Lua for Windows >= 5.1.3.14)
+    # - %MSCVR80% must be the full pathname of 'msvcr80.dll'
+    #
+    ifeq "$(LUA_DEV)" ""
+      $(warning LUA_DEV not defined - try i.e. 'make LUA_DEV=/c/Program\ Files/Lua/5.1')
+      # this assumes Lua was built and installed from source and everything is located in default folders (/usr/local/include and /usr/local/bin)
+      LUA_FLAGS:=-I "/usr/local/include"
+      LUA_LIBS:=$(word 1,$(shell which lua54.$(_SO)) $(shell which lua53.$(_SO)) $(shell which lua52.$(_SO)) $(shell which lua51$(_SO)))
+    else
+      LUA_FLAGS:=-I "$(LUA_DEV)/include"
+      LUA_LIBS:="$(LUA_DEV)/lua5.1.dll" -lgcc
+    endif
+    LIBFLAG=-shared -Wl,-Map,lanes.map
+  else
+    # Autodetect LUA_FLAGS and/or LUA_LIBS
+    #
+    ifneq "$(shell which pkg-config)" ""
+      ifeq "$(shell pkg-config --exists luajit && echo 1)" "1"
+        LUA_FLAGS:=$(shell pkg-config --cflags luajit)
+        LUA_LIBS:=$(shell pkg-config --libs luajit)
+          #
+          # Debian: -I/usr/include/luajit-2.0
+          #         -lluajit-5.1
+      else
+        ifeq "$(shell pkg-config --exists lua5.1 && echo 1)" "1"
+          LUA_FLAGS:=$(shell pkg-config --cflags lua5.1)
+          LUA_LIBS:=$(shell pkg-config --libs lua5.1)
+            #
+            # Ubuntu: -I/usr/include/lua5.1 
+            #         -llua5.1
+        else
+          ifeq "$(shell pkg-config --exists lua && echo 1)" "1"
+            LUA_FLAGS:=$(shell pkg-config --cflags lua)
+            LUA_LIBS:=$(shell pkg-config --libs lua)
+              #
+              # OS X fink with pkg-config:
+              #      -I/sw/include 
+              #      -L/sw/lib -llua -lm
+          else
+            $(warning *** 'pkg-config' existed but did not know of 'lua[5.1]' - Good luck!)
+            LUA_FLAGS:=
+            LUA_LIBS:=-llua
+          endif
+        endif
+      endif
+    else
+      # No 'pkg-config'; try defaults
+      #
+      ifeq "$(shell uname -s)" "Darwin"
+        $(warning *** Assuming 'fink' at default path)
+        LUA_FLAGS:=-I/sw/include
+        LUA_LIBS:=-L/sw/lib -llua
+      else
+        $(warning *** Assuming an arbitrary Lua installation; try installing 'pkg-config')
+        LUA_FLAGS:=
+        LUA_LIBS:=-llua
+      endif
+    endif
+  endif
+
+  ifeq "$(shell uname -s)" "Darwin"
+    # Some machines need 'MACOSX_DEPLOYMENT_TARGET=10.3' for using '-undefined dynamic_lookup'
+    # (at least PowerPC running 10.4.11); does not harm the others
+    #
+    CC = MACOSX_DEPLOYMENT_TARGET=10.3 gcc
+    LIBFLAG = -bundle -undefined dynamic_lookup
+  endif
+  
+  CFLAGS=-Wall -Werror $(OPT_FLAGS) $(LUA_FLAGS)
+  LIBS=$(LUA_LIBS)
+endif
+
+#---
+# PThread platform specifics
+#
+ifeq "$(shell uname -s)" "Linux"
+  # -D_GNU_SOURCE needed for 'pthread_mutexattr_settype'
+  CFLAGS += -D_GNU_SOURCE -fPIC
+
+  # Use of -DUSE_PTHREAD_TIMEDJOIN is possible, but not recommended (slower & keeps threads
+  # unreleased somewhat longer)
+  #CFLAGS += -DUSE_PTHREAD_TIMEDJOIN
+
+  LIBS += -lpthread
+endif
+
+ifeq "$(shell uname -s)" "BSD"
+  LIBS += -lpthread
+endif