Source: libgpiod Version: 1.5.2-1 Tags: patch User: [email protected] Usertags: ftcbfs
libgpiod fails to cross build from source for two unrelated reasons. The python build dependencies are not cross-satisfiable. A simple workaround for this issue is building with the nopython build profile now, but there is a real solution for cross building python extensions. One simply turns a python$something-dev dependency into a combination of libpython$something-dev plus python$something-dev:any. libgpiod also started using help2man. help2man always breaks cross compilation and there is no good solution to this. Let me list a number of options: * Stop using help2man and write useful manual pages. (<- preferred) * Don't run help2man during cross builds and use pre-generated manual pages instead. (<- what the attached patch does) * Build the whole package twice: Once natively for help2man and once for real. * Skip manual pages in cross builds. (<- what upstream defaults to, breaks reproducibility) * Carefully extract --help output from C sources using a script without actually running it. (<- very fragile) For libgpiod, by far the simplest option was using generated pages. Please consider applying the attached patch. Please feel free to use a better solution for help2man. Helmut
diff --minimal -Nru libgpiod-1.5.2/debian/changelog libgpiod-1.5.2/debian/changelog --- libgpiod-1.5.2/debian/changelog 2020-09-03 05:26:10.000000000 +0200 +++ libgpiod-1.5.2/debian/changelog 2020-10-16 14:12:19.000000000 +0200 @@ -1,3 +1,12 @@ +libgpiod (1.5.2-1.1) UNRELEASED; urgency=medium + + * Non-maintainer upload. + * Fix FTCBFS: (Closes: #-1) + + Multiarchify python Build-Depends. + + Install pre-built manpages during cross builds. + + -- Helmut Grohne <[email protected]> Fri, 16 Oct 2020 14:12:19 +0200 + libgpiod (1.5.2-1) unstable; urgency=medium * Import new upstream release diff --minimal -Nru libgpiod-1.5.2/debian/control libgpiod-1.5.2/debian/control --- libgpiod-1.5.2/debian/control 2020-07-01 05:27:19.000000000 +0200 +++ libgpiod-1.5.2/debian/control 2020-10-16 14:12:19.000000000 +0200 @@ -6,10 +6,11 @@ autoconf-archive, automake, dh-sequence-python3 <!nopython>, - help2man, + help2man <!cross>, pkg-config, m4, - python3-dev <!nopython>, + python3-dev:any <!nopython>, + libpython3-dev <!nopython>, python3-setuptools <!nopython> Standards-Version: 4.5.0 Rules-Requires-Root: no diff --minimal -Nru libgpiod-1.5.2/debian/patches/cross.patch libgpiod-1.5.2/debian/patches/cross.patch --- libgpiod-1.5.2/debian/patches/cross.patch 1970-01-01 01:00:00.000000000 +0100 +++ libgpiod-1.5.2/debian/patches/cross.patch 2020-10-16 14:12:19.000000000 +0200 @@ -0,0 +1,26 @@ +--- libgpiod-1.5.2.orig/configure.ac ++++ libgpiod-1.5.2/configure.ac +@@ -212,7 +212,7 @@ + then + AC_CHECK_PROG([has_help2man], [help2man], [true], [false]) + fi +-AM_CONDITIONAL([WITH_MANPAGES], [test "x$has_help2man" = xtrue]) ++AM_CONDITIONAL([WITH_HELP2MAN], [test "x$has_help2man" = xtrue]) + if test "x$has_help2man" = xfalse + then + AC_MSG_NOTICE([help2man not found - man pages cannot be generated automatically]) +--- libgpiod-1.5.2.orig/man/Makefile.am ++++ libgpiod-1.5.2/man/Makefile.am +@@ -6,10 +6,10 @@ + # Copyright (C) 2019 Bartosz Golaszewski <[email protected]> + # + +-if WITH_MANPAGES +- + dist_man1_MANS = gpiodetect.man gpioinfo.man gpioget.man gpioset.man gpiofind.man gpiomon.man + ++if WITH_HELP2MAN ++ + %.man: $(top_builddir)/tools/$(*F) + help2man $(top_builddir)/tools/$(*F) --include=$(srcdir)/template --output=$(builddir)/$@ --no-info + diff --minimal -Nru libgpiod-1.5.2/debian/patches/series libgpiod-1.5.2/debian/patches/series --- libgpiod-1.5.2/debian/patches/series 1970-01-01 01:00:00.000000000 +0100 +++ libgpiod-1.5.2/debian/patches/series 2020-10-16 14:12:19.000000000 +0200 @@ -0,0 +1 @@ +cross.patch
