sci-electronics/splat: Fix error: ISO C++17 does not allow register storage class specifier

Bug: https://bugs.gentoo.org/898168
Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/31477
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>

2 files changed, 114 insertions, 0 deletions

diff --git a/sci-electronics/splat/files/splat-1.4.2-drop-register-keyword.patch b/sci-electronics/splat/files/splat-1.4.2-drop-register-keyword.patch
new file mode 100644
index 000000000000..4445b06f2057
--- /dev/null
+++ b/sci-electronics/splat/files/splat-1.4.2-drop-register-keyword.patch
@@ -0,0 +1,22 @@
+Register keyword was deprecated in C++14 and removed in C++17
+Bug: https://bugs.gentoo.org/898168
+--- a/splat.cpp
++++ b/splat.cpp
+@@ -567,7 +567,7 @@ double ElevationAngle(struct site source, struct site destination)
+ 	   (downtilt), as referenced to a normal to the center of
+ 	   the earth. */
+ 	   
+-	register double a, b, dx;
++	double a, b, dx;
+ 
+ 	a=GetElevation(destination)+destination.alt+earthradius;
+ 	b=GetElevation(source)+source.alt+earthradius;
+@@ -2727,7 +2727,7 @@ void PlotPath(struct site source, struct site destination, char mask_value)
+ 
+ 	char block;
+ 	int x, y;
+-	register double cos_xmtr_angle, cos_test_angle, test_alt;
++	double cos_xmtr_angle, cos_test_angle, test_alt;
+ 	double distance, rx_alt, tx_alt;
+ 
+ 	ReadPath(source,destination);
diff --git a/sci-electronics/splat/splat-1.4.2-r1.ebuild b/sci-electronics/splat/splat-1.4.2-r1.ebuild
new file mode 100644
index 000000000000..e8c4e8321e79
--- /dev/null
+++ b/sci-electronics/splat/splat-1.4.2-r1.ebuild
@@ -0,0 +1,92 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+DESCRIPTION="RF Signal Propagation, Loss, And Terrain analysis tool"
+HOMEPAGE="https://www.qsl.net/kd2bd/splat.html"
+SRC_URI="https://www.qsl.net/kd2bd/${P}.tar.bz2"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~ppc ~x86"
+IUSE="doc hires l10n_es"
+
+DEPEND="
+	app-arch/bzip2
+	sys-libs/zlib
+"
+RDEPEND="${DEPEND}"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.2.2-gcc43.patch
+	"${FILESDIR}"/${PN}-1.4.2-drop-register-keyword.patch
+)
+
+src_configure() {
+	# fake resulting file from interactive configuration script
+	# using default resolution
+	cat <<- EOF > "${S}/splat.h" || die
+		/* Parameters for 3 arc-second standard resolution mode of operation */
+		#define MAXPAGES 9
+		#define HD_MODE 0
+	EOF
+	if use hires; then
+		# fake resulting file from interactive configuration script
+		# using default resolution
+		cat <<- EOF > "${S}/hires.h" || die
+			/* Parameters for 3 arc-second hires resolution mode of operation */
+			#define MAXPAGES 9
+			#define HD_MODE 1
+	EOF
+	fi
+}
+
+src_compile() {
+	tc-export CC CXX
+
+	cp {splat,rfsplat}.cpp || die
+	emake LDLIBS="-lm -lbz2" -E "rfsplat: itwom3.0.o"
+	if use hires; then
+		cp {hires,splat}.h || die
+		cp {splat,rfsplat-hd}.cpp || die
+		emake LDLIBS="-lm -lbz2" -E "rfsplat-hd: itwom3.0.o"
+	fi
+
+	cd utils || die
+
+	emake citydecoder usgs2sdf
+	emake LDLIBS=-lbz2 srtm2sdf
+	emake LDLIBS=-lm bearing
+}
+
+src_install() {
+	local SPLAT_LANG="english"
+	use l10n_es && SPLAT_LANG="spanish"
+	# splat binary
+	dobin rfsplat
+
+	use hires && dobin rfsplat-hd
+
+	# utilities
+	dobin utils/{citydecoder,usgs2sdf,srtm2sdf,postdownload,bearing}
+	newman docs/${SPLAT_LANG}/man/splat.man rfsplat.1
+
+	dodoc CHANGES README utils/fips.txt
+	newdoc utils/README README.UTILS
+
+	use doc && dodoc docs/${SPLAT_LANG}/{pdf/splat.pdf,postscript/splat.ps}
+
+	#sample data
+	docinto sample_data
+	dodoc -r sample_data/.
+}
+
+pkg_postinst() {
+	elog "The original SPLAT! command got renamed to 'rfsplat' to avoid"
+	elog "filename collision with app-portage/splat."
+	elog ""
+	elog "Be aware that it is still referenced as 'splat' in the documentation."
+}