On Sun, 2017-03-19 at 01:51 +0000, Alejandro García Vallejo wrote: > bar: $(@:%r=foo%z) > @echo End > > foobaz: > @echo The > > """ > GNU Make Output: > End > > Make fails to read $@ (aka, it's empty).
That's not a bug; that's defined behavior. From the GNU make manual: https://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html > It’s very important that you recognize the limited scope in which > automatic variable values are available: they only have values within > the recipe. In particular, you cannot use them anywhere within the > target list of a rule; they have no value there and will expand to the > empty string. Also, they cannot be accessed directly within the > prerequisite list of a rule. A common mistake is attempting to use $@ > within the prerequisites list; this will not work. However, there is a > special feature of GNU make, secondary expansion (see Secondary > Expansion), which will allow automatic variable values to be used in > prerequisite lists. _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
