dev-libs/libserialport: add patch for runtime breakage w/ new kernels

Closes: https://bugs.gentoo.org/813273
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 78 insertions, 0 deletions

diff --git a/dev-libs/libserialport/files/libserialport-0.1.1-kernel-termiox.patch b/dev-libs/libserialport/files/libserialport-0.1.1-kernel-termiox.patch
new file mode 100644
index 000000000000..8a8aed26a31d
--- /dev/null
+++ b/dev-libs/libserialport/files/libserialport-0.1.1-kernel-termiox.patch
@@ -0,0 +1,32 @@
+https://sigrok.org/gitweb/?p=libserialport.git;a=commitdiff;h=6f9b03e597ea7200eb616a4e410add3dd1690cb1
+https://sigrok.org/bugzilla/show_bug.cgi?id=1687
+https://bugs.gentoo.org/813273
+
+Fixes runtime breakage with newer kernels.
+
+From: Karl Palsson <karlp@etactica.com>
+Date: Fri, 11 Jun 2021 17:07:09 +0000
+Subject: [PATCH] HACK: don't even check for termiox
+
+termiox was removed from linux in e0efb3168d34
+Some more information available in https://www.spinics.net/lists/linux-serial/msg41926.html
+
+Attempting to use the termiox ioctls on more modern kernels results in
+"Inappropriate IOCTL" errors.
+
+While the "right" solution might be to remove the termiox code from the
+linux path, simply not checking for termiox builds a libserialport that
+functions on modern linux kernels.
+
+Signed-off-by: Karl Palsson <karlp@etactica.com>
+--- a/configure.ac
++++ b/configure.ac
+@@ -112,7 +112,7 @@ AC_SYS_LARGEFILE
+ AC_TYPE_SIZE_T
+ 
+ # Check for specific termios structures.
+-AC_CHECK_TYPES([struct termios2, struct termiox],,,
++AC_CHECK_TYPES([struct termios2],,,
+ 	[[#include <linux/termios.h>]])
+ AC_CHECK_MEMBERS([struct termios.c_ispeed, struct termios.c_ospeed,
+ 		struct termios2.c_ispeed, struct termios2.c_ospeed],,,
diff --git a/dev-libs/libserialport/libserialport-0.1.1-r1.ebuild b/dev-libs/libserialport/libserialport-0.1.1-r1.ebuild
new file mode 100644
index 000000000000..a06498d3dbfc
--- /dev/null
+++ b/dev-libs/libserialport/libserialport-0.1.1-r1.ebuild
@@ -0,0 +1,46 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit autotools
+
+if [[ ${PV} == "9999" ]]; then
+	EGIT_REPO_URI="git://sigrok.org/${PN}"
+	inherit git-r3
+else
+	SRC_URI="https://sigrok.org/download/source/${PN}/${P}.tar.gz"
+	KEYWORDS="~amd64 ~x86"
+fi
+
+DESCRIPTION="Cross platform serial port access library"
+HOMEPAGE="https://sigrok.org/wiki/Libserialport"
+
+LICENSE="LGPL-3"
+SLOT="0"
+IUSE="static-libs"
+
+BDEPEND="virtual/pkgconfig"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-kernel-termiox.patch
+)
+
+src_prepare() {
+	default
+
+	#[[ ${PV} == "9999" ]] && eautoreconf
+	# Needed for the termiox patch, should be able to drop on next release
+	# (change back this + inherit to just for 9999)
+	eautoreconf
+}
+
+src_configure() {
+	econf $(use_enable static-libs static)
+}
+
+src_install() {
+	default
+
+	find "${ED}" -name '*.la' -type f -delete || die
+}