rust-beta: keep comment in-sync with lang/rust

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Module Name:	pkgsrc-wip
Committed By:	pin <voidpin%protonmail.com@localhost>
Pushed By:	pin
Date:		Sat Apr 25 20:49:26 2026 +0200
Changeset:	031e814f89c5f039647bb1a5e61d21697d946e61

Modified Files:
	rust-beta/Makefile

Log Message:
rust-beta: keep comment in-sync with lang/rust

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https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=031e814f89c5f039647bb1a5e61d21697d946e61

Please note that diffs are not public domain; they are subject to the
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diffstat:
 rust-beta/Makefile | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diffs:
diff --git a/rust-beta/Makefile b/rust-beta/Makefile
index b179ff87f7..9416f166ef 100644
--- a/rust-beta/Makefile
+++ b/rust-beta/Makefile
@@ -74,13 +74,17 @@ CHECK_SSP_SUPPORTED=	no
 
 .include "../../mk/bsd.prefs.mk"
 
-# Getting RPATH with $ORIGIN into the bootstrap binaries is problematic,
-# since pkgsrc refuses to put $ORIGIN into RPATHs of executables.
-# So instead we need these so that the bootstrap compiler can be run out
-# of the $RUST_BOOTSTRAP_PATH directory as part of the initial part of the
-# rust compiler build.
+# Getting RPATH with $ORIGIN into the bootstrap binaries is
+# problematic, since pkgsrc refuses to put $ORIGIN into RPATHs
+# of executables. So instead we need these so that the bootstrap
+# compiler can be run out of the $RUST_BOOTSTRAP_PATH directory as
+# part of the initial part of the rust compiler build.
 # This problem is not present with the amd64 bootstrap bits,
-# which are built by upstream and uses $ORIGIN/../lib in RPATH.
+# which are built by our upstream and uses $ORIGIN/../lib in RPATH.
+#
+# The above is only true on NetBSD, for other bootstrap kits (e.g. illumos)
+# the binaries are made to be relocatable after the build using elfedit or
+# similar.  It is unclear why this approach is not used by NetBSD too.
 MAKE_ENV+=		LD_LIBRARY_PATH=${RUST_BOOTSTRAP_PATH:Q}/lib
 PKGSRC_MAKE_ENV+=	LD_LIBRARY_PATH=${RUST_BOOTSTRAP_PATH:Q}/lib