maint: sync luke with upstream.

* build-aux/luke: Sync with upstream.
* NEWS.md (Bug fixes): Update.

Signed-off-by: Gary V. Vaughan <[email protected]>

NEWS.md

@@ -2,6 +2,11 @@
 
 ## Noteworthy changes in release ?.? (????-??-??) [?]
 
+### Bug fixes
+
+  - `luke` really propagates `LDFLAGS` to module compilation
+    commands.
+
 
 ## Noteworthy changes in release 6.2.5 (2020-04-15) [stable]
 

build-aux/luke

@@ -17,7 +17,7 @@ end,fatal=fatal,}
 end
 package.preload['luke.cli']=function()
 local _ENV=require'std.normalize'{'luke._base','luke.lukefile','luke.platforms','std.functional',}local function version()print[[
-luke (Luke) 0.2.0
+luke (Luke) 0.2.1
 Written by Gary V. Vaughan <[email protected]>, 2014
 
 Copyright (C) 2020, Gary V. Vaughan
@@ -102,7 +102,7 @@ abspath=abspath..'.lua'return src,(gsub(abspath,'/[^/]+%.lua$',''))end
 local function module_to_path(module,sources,objdir)return dropuntil(sources,function(source)return case(source,{['.*%.[ch]']=bind(c_source,{module,objdir}),['(.*%.[ch])%.in']=bind(c_source,{module,objdir}),['.*%.lua']=bind(lua_source,{module}),['(.*%.lua)%.in']=bind(lua_source,{module}),function(src)fatal("unsupported source type '%s'",src)end,})end)end
 return{build_c_module=function(L,env,luke,name)local rules=luke.modules[name]local c_module=c_module_path(luke.variables.objdir,name)local command={'$MAKEDIRS',dirname(c_module)}local status,err,out=spawn(env,unpack(command))if status~=0 then
 stdout:write(concat(command,' ')..'\n')stderr:write(err..'\n')exit(status)end
-return run(L,env,flatten('$CC $CFLAGS $LIBFLAG $PKGFLAGS $CPPFLAGS',defines(env,except(list(rules.defines,luke.defines),nil)),incdirs(rules.incdirs,luke.incdirs),rules.sources,'-o',c_module,libdirs(rules.libdirs,luke.libdirs),'$LIBS',rules.libraries,luke.libraries))end,c_modules=function(modules)return filter(keys(modules),function(name)return dropuntil(modules[name].sources,bind(match,{[2]='%.[ch]$'}))end)end,incdirs=incdirs,install_modules=function(L,env,luke,modules)return reduce(keys(modules),0,function(status,name)if status==0 then
+return run(L,env,flatten('$CC $CFLAGS $LIBFLAG $PKGFLAGS $CPPFLAGS',defines(env,except(list(rules.defines,luke.defines),nil)),incdirs(rules.incdirs,luke.incdirs),rules.sources,'-o',c_module,'$LDFLAGS',libdirs(rules.libdirs,luke.libdirs),'$LIBS',rules.libraries,luke.libraries))end,c_modules=function(modules)return filter(keys(modules),function(name)return dropuntil(modules[name].sources,bind(match,{[2]='%.[ch]$'}))end)end,incdirs=incdirs,install_modules=function(L,env,luke,modules)return reduce(keys(modules),0,function(status,name)if status==0 then
 local src,dir=module_to_path(name,modules[name].sources,luke.variables.objdir)if not exists(interpolate(env,dir))then
 status=run(L,env,{'$MAKEDIRS',dir})end
 if status==0 then