diff --git a/debian/changelog b/debian/changelog
index 81d70bd2..e0835a8b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -8,6 +8,7 @@ llvm-toolchain-17 (1:17.0.2-1~exp2) UNRELEASED; urgency=medium
   * Build-depend on libncurses-dev instead of libncurses5-dev.
   * Use a stamps subdirectory for all build stamps.
   * Factor-out the calls to dh_listpackages.
+  * d/rules/preconfigure: Print info about build environment.
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Wed, 04 Oct 2023 09:46:49 +0200
 
diff --git a/debian/rules b/debian/rules
index fe2f03a2..43883ba2 100755
--- a/debian/rules
+++ b/debian/rules
@@ -539,6 +539,14 @@ stamps/preconfigure:
 		echo "llvm spriv isn't detected while it should probably for this distro"; \
 	fi
 
+	@echo "Memory:"
+	@if [ -e /proc/meminfo ]; then \
+		cat /proc/meminfo | grep -E '(Mem|Swap)Free|Cached'; \
+	else \
+		echo "  No memory info available"; \
+	fi
+	@echo "Processors: $$(cat /proc/cpuinfo | grep --count '^processor')"
+
 	@echo "DEB_BUILD_OPTIONS=$(DEB_BUILD_OPTIONS)"
 	@echo "DEB_HOST_MULTIARCH=$(DEB_HOST_MULTIARCH)"
 	@echo "DEB_HOST_GNU_TYPE=$(DEB_HOST_GNU_TYPE)"