Re: auto-detecting platform in Makefile

[Gisle Vanem <gvanem@...>]

Luiz Henrique de Figueiredo wrote:

> I've tested it in Linux and macOS but I don't have access to other
> platforms. Perhaps some of you do. In particular, I don't know whether
> FreeBSD, NetBSD, OpenBSD are all the same.
>
> All contributions welcome. Thanks.

Fails on Win-10 (My 'uname' is from Cygwin, 32-bit):

c:\> make guess

makefile:95: target 'AIX' given more than once in the same rule
makefile:108: target 'FreeBSD' given more than once in the same rule
makefile:113: target 'Linux' given more than once in the same rule
Guessing CYGWIN_NT-10.0-WOW
...
gnumake[1]: *** No rule to make target 'CYGWIN_NT-10.0-WOW'.  Stop.


This seems to work:

--- a/Makefile 2018-08-01 09:37:14
+++ b/Makefile 2018-08-01 09:36:47
@@ -26,7 +26,7 @@

 # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======

-PLATS= aix bsd c89 freebsd generic guess linux macosx mingw posix solaris
+PLATS= aix bsd c89 freebsd generic guess linux macosx mingw posix solaris CYGWIN_NT-10.0-WOW

 LUA_A= liblua.a
 CORE_O=        lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
@@ -122,6 +122,11 @@
        "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe
        $(MAKE) "LUAC_T=luac.exe" luac.exe

+CYGWIN_NT-10.0-WOW:
+       $(MAKE) LUA_A=lua53.dll LUA_T=lua.exe 'AR=ar rs' RANLIB= \
+               SYSCFLAGS=-DLUA_BUILD_AS_DLL SYSLIBS= SYSLDFLAGS=-s lua.exe
+       $(MAKE) LUAC_T=luac.exe luac.exe
+
 posix:
        $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX"

------

Some issue with GNU-make, 4NT or sh that doesn't like all the "X=Y" on
the cmd-line. 'X=Y' works better.

--
--gv