allow to call setarch with a different value than $CARCH

Introduce setarch-aliases.d/ which gets installed inside
/usr/share/devtools. This allows to assign aliases which map one CARCH
to a different name which gets provided as argument for setarch. This is
necessary on archlinuxarm ("armv6h" -> "armv6l", "armv7h" -> "armv7l")
and allows for more fine-grained architectures (e.g. archlinux32 has
"i686" and "pentium4", which differ in the required cpu capabilities).

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/archbuild.in b/archbuild.in
index 5b98976..7cd65bd 100644
--- a/archbuild.in
+++ b/archbuild.in
@@ -17,6 +17,11 @@ else
 	repo=${tag%-*}
 	arch=${tag##*-}
 fi
+if [[ -f "@pkgdatadir@/setarch-aliases.d/${arch}" ]]; then
+	read -r set_arch < "@pkgdatadir@/setarch-aliases.d/${arch}"
+else
+	set_arch="${arch}"
+fi
 chroots='/var/lib/archbuild'
 clean_first=false
 
@@ -69,7 +74,7 @@ if ${clean_first} || [[ ! -d "${chroots}/${repo}-${arch}" ]]; then
 
 	rm -rf --one-file-system "${chroots}/${repo}-${arch}"
 	(umask 0022; mkdir -p "${chroots}/${repo}-${arch}")
-	setarch "${arch}" mkarchroot \
+	setarch "${set_arch}" mkarchroot \
 		-C "${pacman_config}" \
 		-M "${makepkg_config}" \
 		"${chroots}/${repo}-${arch}/root" \