Autotools: Produce .tar.{gz,lz,xz} release archives (#236, #258)

expat/Changes

@@ -13,6 +13,7 @@ Release x.x.x XXX XXXXXX XX XXXX
             #243  Windows: Fix syntax of .def module definition files
        #245 #246  Autotools: Fix check for -fvisibility=hidden for Clang
        #247 #248  Autotools: Fix compilation for lack of docbook2x-man
+       #236 #258  Autotools: Produce .tar.{gz,lz,xz} release archives
 
         Special thanks to:
             Benjamin Peterson

expat/Makefile.am

@@ -30,8 +30,9 @@
 
 AUTOMAKE_OPTIONS = \
     dist-bzip2 \
+    dist-lzip \
+    dist-xz \
     foreign \
-    no-dist-gzip \
     subdir-objects
 
 ACLOCAL_AMFLAGS = -I m4

expat/distribute.sh

@@ -10,11 +10,20 @@ PS4='# '
 set -x
 
 version="$(./conftools/get-version.sh lib/expat.h)"
-archive=expat-${version}.tar.bz2
 
 ./buildconf.sh
 ./configure
 make distcheck
 
-gpg --armor --output ${archive}.asc --detach-sign ${archive}
-gpg --verify ${archive}.asc ${archive}
+extensions=(
+    gz
+    bz2
+    lz
+    xz
+)
+
+for ext in ${extensions[@]} ; do
+    archive=expat-${version}.tar.${ext}
+    gpg --armor --output ${archive}.asc --detach-sign ${archive}
+    gpg --verify ${archive}.asc ${archive}
+done