Bug#1057191: liblouis FTCBFS: confuses build/host compiler flags

[Helmut Grohne]

Source: liblouis
Version: 3.27.0-1
Tags: patch
User: debian-cross at lists.debian.org
Usertags: ftcbfs

liblouis fails to cross build from source. The cause for this is a
change in buildflags that dpkg emits. These have become
architecture-dependent recently and e.g. amd64 injects -fcf-protection
while arm64 injects -mbranch-protection=standard neither of which is
understood by the other. Hence, we must tell dh_auto_configure to pass
the right ones explicitly when changing the architecture. I'm attaching
a patch for your convenience.

Helmut
-------------- next part --------------
diff --minimal -Nru liblouis-3.27.0/debian/changelog liblouis-3.27.0/debian/changelog
--- liblouis-3.27.0/debian/changelog	2023-09-12 21:14:18.000000000 +0200
+++ liblouis-3.27.0/debian/changelog	2023-12-01 10:14:01.000000000 +0100
@@ -1,3 +1,10 @@
+liblouis (3.27.0-1.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix FTCBFS: Recompute build flags for native build. (Closes: #-1)
+
+ -- Helmut Grohne <helmut at subdivi.de>  Fri, 01 Dec 2023 10:14:01 +0100
+
 liblouis (3.27.0-1) unstable; urgency=medium
 
   * New upstream release.
diff --minimal -Nru liblouis-3.27.0/debian/rules liblouis-3.27.0/debian/rules
--- liblouis-3.27.0/debian/rules	2022-07-25 00:52:15.000000000 +0200
+++ liblouis-3.27.0/debian/rules	2023-12-01 10:14:00.000000000 +0100
@@ -24,7 +24,7 @@
 
 override_dh_auto_configure:
 ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH))
-	dpkg-architecture -f -a$(DEB_BUILD_ARCH) -c dh_auto_configure -- --enable-ucs4
+	dpkg-architecture -f -a$(DEB_BUILD_ARCH) -c dh_auto_configure --reload-all-buildenv-variables -- --enable-ucs4
 	dpkg-architecture -f -a$(DEB_BUILD_ARCH) -c dh_auto_build
 	dh_auto_clean
 endif