package/armadillo: temporarily update the site URL

Following an email exchange with Conrad Sand, one of the maintainers of
the project, I learned that version 9.900.2 has been moved to
https://sourceforge.net/projects/arma/files/retired/.

This patch fixes the package download error, waiting for a subsequent
patch that will restore the previous URL to bump to a more recent
version.

Adding the .RETIRED suffix to the downloaded tarball generated the
following error:

armadillo-9.900.2.tar.xz.RETIRED: OK (sha256: d78658c9442addf7f718eb05881150ee3ec25604d06dd3af4942422b3ce26d05)
>>> armadillo 9.900.2 Extracting
buildroot/dl/armadillo/armadillo-9.900.2.tar.xz.RETIRED | buildroot/output/host/bin/tar --strip-components=1 -C buildroot/output/build/armadillo-9.900.2   -xf -
/bin/bash: line 1: buildroot/dl/armadillo/armadillo-9.900.2.tar.xz.RETIRED: Permission denied
buildroot/output/host/bin/tar: This does not look like a tar archive
buildroot/output/host/bin/tar: Exiting with failure status due to previous errors
make[1]: *** [package/pkg-generic.mk:213: buildroot/output/build/armadillo-9.900.2/.stamp_extracted] Error 2

which required the addition of ARMADILLO_EXTRACT_CMDS to be fixed.

Finally, it was also necessary to modify the tarball's hash.

Fixes:
- http://autobuild.buildroot.org/results/d4e9e7b453960a4f62a199344b30b729a4f235bc

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
diff --git a/package/armadillo/armadillo.hash b/package/armadillo/armadillo.hash
index cc91fb4..9b19b8c 100644
--- a/package/armadillo/armadillo.hash
+++ b/package/armadillo/armadillo.hash
@@ -1,4 +1,4 @@
 # Locally computed:
-sha256  d78658c9442addf7f718eb05881150ee3ec25604d06dd3af4942422b3ce26d05  armadillo-9.900.2.tar.xz
+sha256  d78658c9442addf7f718eb05881150ee3ec25604d06dd3af4942422b3ce26d05  armadillo-9.900.2.tar.xz.RETIRED
 # License files, locally calculated
 sha256  3ddf9be5c28fe27dad143a5dc76eea25222ad1dd68934a047064e56ed2fa40c5  LICENSE.txt
diff --git a/package/armadillo/armadillo.mk b/package/armadillo/armadillo.mk
index 8661bfd..81684a4 100644
--- a/package/armadillo/armadillo.mk
+++ b/package/armadillo/armadillo.mk
@@ -5,8 +5,8 @@
 ################################################################################
 
 ARMADILLO_VERSION = 9.900.2
-ARMADILLO_SOURCE = armadillo-$(ARMADILLO_VERSION).tar.xz
-ARMADILLO_SITE = https://downloads.sourceforge.net/project/arma
+ARMADILLO_SOURCE = armadillo-$(ARMADILLO_VERSION).tar.xz.RETIRED
+ARMADILLO_SITE = https://sourceforge.net/projects/arma/files/retired
 ARMADILLO_INSTALL_STAGING = YES
 ARMADILLO_LICENSE = Apache-2.0
 ARMADILLO_LICENSE_FILES = LICENSE.txt
@@ -30,4 +30,8 @@
 ARMADILLO_DEPENDENCIES += lapack
 endif
 
+define ARMADILLO_EXTRACT_CMDS
+	$(TAR) --strip-components=1 -C $(@D) $(TAR_OPTIONS) $($(PKG)_DL_DIR)/$(ARMADILLO_SOURCE)
+endef
+
 $(eval $(cmake-package))