From f3cd938b0b881f78ff395f8c1c5d49f843e18cf4 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Thu, 10 Jun 2021 10:48:36 +0000
Subject: toolchain integration: ensure accuracy of slibtool's --dumpmachine
 output.

---
 config.project            |  2 +-
 project/config/cfgfini.sh | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 project/config/cfgfini.sh

diff --git a/config.project b/config.project
index 462126f..c8b6eef 100644
--- a/config.project
+++ b/config.project
@@ -15,7 +15,7 @@ mb_disable_shared=yes
 # custom config step
 mb_use_custom_cfgdefs=no
 mb_use_custom_cfginit=no
-mb_use_custom_cfgfini=no
+mb_use_custom_cfgfini=yes
 mb_use_custom_cfgtest=no
 
 # advanced make options
diff --git a/project/config/cfgfini.sh b/project/config/cfgfini.sh
new file mode 100644
index 0000000..fb8bd05
--- /dev/null
+++ b/project/config/cfgfini.sh
@@ -0,0 +1,34 @@
+# cfgfini.sh: require slibtool's --dumpmachine output to be
+#             both accurate and complete also during the
+#             toolchain's initial bootstrapping phase.
+# invoked from within the project-agnostic configure script.
+
+# this file is covered by COPYING.SLIBTOOL.
+
+slibtool_cfgfini_error_msg()
+{
+	printf '%s\n' "$@" >&2
+	printf '%s\n' "$@" >&3
+}
+
+slibtool_cfgfini()
+{
+	if [ "${mb_cchost_set:-}" = 'yes' ]; then
+		return 0;
+
+	elif [ -n "$ccenv_host_dumpmachine_switch" ]; then
+		return 0;
+	fi
+
+	slibtool_cfgfini_error_msg
+	slibtool_cfgfini_error_msg "$mb_package: the host compiler, \`$ccenv_host_cc\`, does not provide a -dumpmachine switch."
+	slibtool_cfgfini_error_msg "$mb_package: please specify the host manually either by passing the --cchost argument to"
+	slibtool_cfgfini_error_msg "             $mb_package's configure script, or by setting the CCHOST environment variable."
+	slibtool_cfgfini_error_msg "$mb_package: this requirement aims to ensure a complete and accurate \`slibtool --dumpmachine\`"
+	slibtool_cfgfini_error_msg "             output also during the toolchain's initial bootstrapping phase."
+	slibtool_cfgfini_error_msg
+
+	config_failure
+}
+
+slibtool_cfgfini
-- 
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