makepkg: add rust support for *FLAGS and debug-prefix-map

The rust language supports $RUSTFLAGS to be used automatically in all
rustc invocations. Allow setting this in makepkg.conf (e.g. for
optimization or debuginfo support), and teach debug+strip to pass the
rustc command line argument necessary to rewrite source file paths in
the debugging symbols.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/etc/makepkg.conf.in b/etc/makepkg.conf.in
index 7e5da993..caf5114b 100644
--- a/etc/makepkg.conf.in
+++ b/etc/makepkg.conf.in
@@ -40,11 +40,13 @@ CHOST="@CHOST@"
 #CFLAGS="-O2 -pipe"
 #CXXFLAGS="-O2 -pipe"
 #LDFLAGS=""
+#RUSTFLAGS="-C opt-level=2"
 #-- Make Flags: change this for DistCC/SMP systems
 #MAKEFLAGS="-j2"
 #-- Debugging flags
 #DEBUG_CFLAGS="-g"
 #DEBUG_CXXFLAGS="-g"
+#DEBUG_RUSTFLAGS="-C debuginfo=2"
 
 #########################################################################
 # BUILD ENVIRONMENT