Bug#1123685: jxrlib FTCBFS: help2man

[Helmut Grohne]

Source: jxrlib
Version: 1.2~git20170615.f752187-5.3
Tags: patch
User: debian-cross at lists.debian.org
Usertags: ftcbfs

jxrlib fails to cross build from source, because it runs help2man on
built binaries. While help2man normally is a difficult problem to cross
building, jxrlib is a quite small package with few dependencies and thus
enables solving the problem by building twice. I'm attaching a patch
that proposes doing so. It adds a native build pass and runs help2man on
the native executables. In case of a native build, the
obj-$(DEB_BUILD_MULTIARCH) target already exists when the manual pages
are created and thus there only is one build pass as before. Please
consider applying the patch.

Helmut
-------------- next part --------------
diff -Nru jxrlib-1.2~git20170615.f752187/debian/changelog jxrlib-1.2~git20170615.f752187/debian/changelog
--- jxrlib-1.2~git20170615.f752187/debian/changelog	2024-08-17 09:05:27.000000000 +0200
+++ jxrlib-1.2~git20170615.f752187/debian/changelog	2025-12-19 21:55:42.000000000 +0100
@@ -1,3 +1,10 @@
+jxrlib (1.2~git20170615.f752187-5.4) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix FTCBFS: Add a native build pass for help2man. (Closes: #-1)
+
+ -- Helmut Grohne <helmut at subdivi.de>  Fri, 19 Dec 2025 21:55:42 +0100
+
 jxrlib (1.2~git20170615.f752187-5.3) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru jxrlib-1.2~git20170615.f752187/debian/rules jxrlib-1.2~git20170615.f752187/debian/rules
--- jxrlib-1.2~git20170615.f752187/debian/rules	2024-08-17 08:51:28.000000000 +0200
+++ jxrlib-1.2~git20170615.f752187/debian/rules	2025-12-19 21:55:42.000000000 +0100
@@ -22,6 +22,10 @@
 pkg_lib=libjxr0t64
 pkg_dev=libjxr-dev
 
+obj-$(DEB_BUILD_MULTIARCH):
+	dpkg-architecture -a$(DEB_BUILD_ARCH) -f -c dh_auto_configure --reload-all-buildenv-variables
+	dpkg-architecture -a$(DEB_BUILD_ARCH) -f -c dh_auto_build -- JxrDecApp JxrEncApp
+
 override_dh_install:
 	# bin
 	dh_install -p$(pkg_bin) usr/bin
@@ -37,11 +41,11 @@
 	dh_clean debian/JxrEncApp.1
 	dh_clean debian/JPEGXR_DPK_Spec_1.0.txt
 
-debian/JxrDecApp.1: debian/JxrDecApp.1.in
-	LD_PRELOAD= LD_LIBRARY_PATH=./debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH) help2man --version-string=$(VER_FULL) --include=$< --output=$@ --no-info ./debian/tmp/usr/bin/JxrDecApp
+debian/JxrDecApp.1: debian/JxrDecApp.1.in obj-$(DEB_BUILD_MULTIARCH)
+	LD_PRELOAD= LD_LIBRARY_PATH=./obj-$(DEB_BUILD_MULTIARCH) help2man --version-string=$(VER_FULL) --include=$< --output=$@ --no-info ./obj-$(DEB_BUILD_MULTIARCH)/JxrDecApp
 
-debian/JxrEncApp.1: debian/JxrEncApp.1.in
-	LD_PRELOAD= LD_LIBRARY_PATH=./debian/tmp/usr/lib/$(DEB_HOST_MULTIARCH) help2man --version-string=$(VER_FULL) --include=$< --output=$@ --no-info ./debian/tmp/usr/bin/JxrEncApp
+debian/JxrEncApp.1: debian/JxrEncApp.1.in obj-$(DEB_BUILD_MULTIARCH)
+	LD_PRELOAD= LD_LIBRARY_PATH=./obj-$(DEB_BUILD_MULTIARCH) help2man --version-string=$(VER_FULL) --include=$< --output=$@ --no-info ./obj-$(DEB_BUILD_MULTIARCH)/JxrEncApp
 
 debian/JPEGXR_DPK_Spec_1.0.txt: doc/JPEGXR_DPK_Spec_1.0.doc
 	antiword $< > $@
@@ -55,5 +59,8 @@
 	dh_installdocs debian/JPEGXR_DPK_Spec_1.0.txt
 	dh_installdocs
 
+execute_after_dh_auto_clean:
+	rm -Rf ./obj-*
+
 get-orig-source:
 	uscan --download --force-download --rename