Make: fix host tuple detection with older Rust versions.

bavshin-f5 · bavshin-f5 · commit 0de9aee1e982 · 2025-08-08T15:32:09.000-06:00
rustc --print host-tuple appeared in 1.84, and the common approach
before that was to parse cargo or rustc -vV output.
As a bonus, we no longer need to specify the rustc executable name.
diff --git a/Makefile b/Makefile
@@ -3,8 +3,6 @@ MODULE		= nginx_acme
 BUILD		?= debug
 TESTS		?= t/
 NGX_CARGO	?= cargo
-# will be used to print host-tuple
-NGX_RUSTC	?= rustc
 
 NGINX_CONFIGURE_BASE	= \
 	auto/configure \
diff --git a/build/compat-gnu.mk b/build/compat-gnu.mk
@@ -1,4 +1,4 @@
-HOST_TUPLE	:= $(shell $(NGX_RUSTC) --print=host-tuple)
+HOST_TUPLE	:= $(shell $(NGX_CARGO) -vV | awk '/^host: / { print $$2; }')
 
 # extension for Rust cdylib targets
 ifeq ($(shell uname), Darwin)
diff --git a/build/compat-posix.mk b/build/compat-posix.mk
@@ -1,4 +1,4 @@
-HOST_TUPLE	!= $(NGX_RUSTC) --print=host-tuple
+HOST_TUPLE	!= $(NGX_CARGO) -vV | awk '/^host: / { print $$2; }'
 
 # bsd make compatibility
 CURDIR		?= $(.CURDIR)

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-HOST_TUPLE := $(shell $(NGX_RUSTC) --print=host-tuple)`
	`1`	`+HOST_TUPLE := $(shell $(NGX_CARGO) -vV \| awk '/^host: / { print $$2; }')`
`2`	`2`
`3`	`3`	`# extension for Rust cdylib targets`
`4`	`4`	`ifeq ($(shell uname), Darwin)`
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-HOST_TUPLE != $(NGX_RUSTC) --print=host-tuple`
	`1`	`+HOST_TUPLE != $(NGX_CARGO) -vV \| awk '/^host: / { print $$2; }'`
`2`	`2`
`3`	`3`	`# bsd make compatibility`
`4`	`4`	`CURDIR ?= $(.CURDIR)`