Initial checkin of Pika from heckimp

meson_dist_script.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+GIT_VERSION_H="$1"
+
+# MESON_SOURCE_ROOT and MESON_BUILD_ROOT environment variables are
+# passed since meson 0.54.0 but we depend on 0.53.0 so I also pass them
+# as script arguments. When we bump out meson requirement, this test may
+# go away.
+if [ -z "$MESON_SOURCE_ROOT" ]; then
+  MESON_SOURCE_ROOT="$2"
+fi
+if [ -z "$MESON_BUILD_ROOT" ]; then
+  MESON_BUILD_ROOT="$3"
+fi
+
+# `meson dist` doesn't trigger a build, which is a problem because we
+# need to add some configured/built files. The case where we didn't
+# build at all is the less annoying (we'd get a failure, which is
+# actually acceptable as it warns us). But the case where we would copy
+# outdated data is much more insidious (such as wrong INSTALL
+# information or wrong git information) as it would be silent.
+# See: https://github.com/mesonbuild/meson/issues/10650
+# And: https://gitlab.gnome.org/GNOME/pika/-/issues/7907
+# This is why we manually trigger, not only a reconfigure, but also a
+# rebuild of the main project before copying data around.
+
+# INSTALL file is generated at configure time.
+meson --reconfigure $MESON_SOURCE_ROOT
+# git-version.h is generated at build time.
+meson compile
+
+cp -f 'INSTALL' "${MESON_DIST_ROOT}"
+rm -f "${MESON_DIST_ROOT}/INSTALL.in"
+
+cp "$GIT_VERSION_H" "${MESON_DIST_ROOT}"