diff --git a/app-emulation/free42/Manifest b/app-emulation/free42/Manifest
new file mode 100644
index 0000000..0b5aaff
--- /dev/null
+++ b/app-emulation/free42/Manifest
@@ -0,0 +1,4 @@
+AUX free42-2.0.10-fix-build-intel-lib.patch 618 BLAKE2B 9039cdf8c78ff198ea9a4927621f7e23f362fffbd537a0a988030713fe061398d2b7b2fc6120cda280249807d9aee448095b1f5cdfb824909d7d381650daafbd SHA512 192eb5e78c50ce52449c5b859369ab7258a98162c5d924ab8b8f3566f52be7a3c4aba95c3cafd60af82d5dcf1b1ad784cf3fe6bf432839baa1b4ca994ddf416b
+AUX free42-2.0.10-fix-makefile.patch 1670 BLAKE2B 6170b3a2a1f397ab10f1d36fe26f55e2c430066fbf7f292240ee359d38b670b68b9f17696f466e4f913af314662de8cffb13b211adbd0977cfa20b331fe52f8a SHA512 8b234cd643dd760b290c3d6054afa799371d249dc23eba889a168eed413037b6463e5f2b1219b9dd4c350d3338aff5adf27b2ea413d229b961ed40d8388c6617
+DIST free42-nologo-2.0.21.tgz 7390516 BLAKE2B da1e25c14915b5798ef29054edbb0eccc5823f5490178d92ea3b4952c5a2edc1f6572741ea11db82c8c650304b0faca081c08ab77bfbf47b329e7770c15647e1 SHA512 2f8afd9d51c9e1f45073708df2ef5655921174a87afb7a38b9fea859db42ba27ec9fe3de9141176a4913ab83e6617a484e3e409fbbdc4baefa8b6146344d4eec
+EBUILD free42-2.0.21.ebuild 948 BLAKE2B 59ada24ef7746d402bfc2e9cb8ea80c23a68e3ffcd1a3da035281d7544422b21ee3c41fe005721672a180f97a850a7066f3a8087f4aa377fb4c0b4e6233fe49f SHA512 3c117630b0266091dff0b540c1975f6e5c69ec46d8a1f8ad55d7757147df9fc2a6bc9bd3bcfead241cfa8dde29deed727bc1bf39e1f833aab686f2c98504a123
diff --git a/app-emulation/free42/files/free42-2.0.10-fix-build-intel-lib.patch b/app-emulation/free42/files/free42-2.0.10-fix-build-intel-lib.patch
new file mode 100644
index 0000000..543595c
--- /dev/null
+++ b/app-emulation/free42/files/free42-2.0.10-fix-build-intel-lib.patch
@@ -0,0 +1,12 @@
+diff -Nuar a/gtk/build-intel-lib.sh b/gtk/build-intel-lib.sh
+--- a/gtk/build-intel-lib.sh
++++ b/gtk/build-intel-lib.sh
+@@ -4,7 +4,7 @@
+ cd IntelRDFPMathLib20U1
+ patch -p0 <../intel-lib-linux.patch
+ cd LIBRARY
+-make CC=gcc CALL_BY_REF=1 GLOBAL_RND=1 GLOBAL_FLAGS=1 UNCHANGED_BINARY_FLAGS=0
++make A=a CC=gcc CALL_BY_REF=1 GLOBAL_RND=1 GLOBAL_FLAGS=1 UNCHANGED_BINARY_FLAGS=0
+ mv libbid.a ../../gcc111libbid.a
+ cd ../..
+ ( echo '#ifdef FREE42_FPTEST'; echo 'const char *readtest_lines[] = {'; tr -d '\r' < IntelRDFPMathLib20U1/TESTS/readtest.in | sed 's/^\(.*\)$/"\1",/'; echo '0 };'; echo '#endif' ) > readtest_lines.cc
diff --git a/app-emulation/free42/files/free42-2.0.10-fix-makefile.patch b/app-emulation/free42/files/free42-2.0.10-fix-makefile.patch
new file mode 100644
index 0000000..c033bbc
--- /dev/null
+++ b/app-emulation/free42/files/free42-2.0.10-fix-makefile.patch
@@ -0,0 +1,58 @@
+diff -Nuar a/gtk/Makefile b/gtk/Makefile
+--- a/gtk/Makefile
++++ b/gtk/Makefile
+@@ -15,11 +15,11 @@
+ # along with this program; if not, see http://www.gnu.org/licenses/.
+ ###############################################################################
+ 
+-CFLAGS = -MMD \
++CFLAGS := -MMD \
+ 	 -Wall \
+ 	 -Wno-parentheses \
+ 	 -Wno-write-strings \
+-	 -g \
++	 -Wno-error=narrowing \
+ 	 -I/usr/X11R6/include \
+ 	 $(shell pkg-config --cflags gtk+-2.0) \
+ 	 -DVERSION="\"$(shell cat ../VERSION)\"" \
+@@ -27,21 +27,25 @@
+ 	 -DDECIMAL_GLOBAL_ROUNDING=1 \
+ 	 -DDECIMAL_GLOBAL_ROUNDING_ACCESS_FUNCTIONS=1 \
+ 	 -DDECIMAL_GLOBAL_EXCEPTION_FLAGS=1 \
+-	 -DDECIMAL_GLOBAL_EXCEPTION_FLAGS_ACCESS_FUNCTIONS=1
++	 -DDECIMAL_GLOBAL_EXCEPTION_FLAGS_ACCESS_FUNCTIONS=1 \
++	 ${CFLAGS}
+ 
+-CXXFLAGS = $(CFLAGS) \
++CXXFLAGS := $(CFLAGS) \
+ 	 -fno-exceptions \
+ 	 -fno-rtti \
+-	 -D_WCHAR_T_DEFINED
++	 -D_WCHAR_T_DEFINED \
++	 ${CXXFLAGS}
+ 
+-LDFLAGS = -L/usr/X11R6/lib
+-LIBS = gcc111libbid.a -lXmu $(shell pkg-config --libs gtk+-2.0)
++MYLDFLAGS = -L/usr/X11R6/lib
++LIBS = gcc111libbid.a -lX11 -ldl -lXmu $(shell pkg-config --libs gtk+-2.0)
+ 
+ ifeq "$(shell uname -s)" "Linux"
+-LDFLAGS += -Wl,--hash-style=both
++MYLDFLAGS += -Wl,--hash-style=both
+ LIBS += -lpthread
+ endif
+ 
++MYLDFLAGS += ${LDFLAGS}
++
+ SRCS = shell_main.cc shell_skin.cc skins.cc keymap.cc shell_loadimage.cc \
+ 	shell_spool.cc core_main.cc core_commands1.cc core_commands2.cc \
+ 	core_commands3.cc core_commands4.cc core_commands5.cc \
+@@ -83,7 +87,7 @@
+ endif
+ 
+ $(EXE): $(OBJS)
+-	$(CXX) -o $(EXE) $(LDFLAGS) $(OBJS) $(LIBS)
++	$(CXX) -o $(EXE) $(MYLDFLAGS) $(OBJS) $(LIBS)
+ 
+ $(SRCS) skin2cc.cc keymap2cc.cc skin2cc.conf: symlinks
+ 
diff --git a/app-emulation/free42/free42-2.0.21.ebuild b/app-emulation/free42/free42-2.0.21.ebuild
new file mode 100644
index 0000000..d9b18f9
--- /dev/null
+++ b/app-emulation/free42/free42-2.0.21.ebuild
@@ -0,0 +1,50 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit eutils toolchain-funcs
+
+MY_PV="${PN}-nologo-${PV}"
+
+DESCRIPTION="An HP-42S Calculator Simulator"
+HOMEPAGE="http://thomasokken.com/free42/"
+SRC_URI="http://thomasokken.com/free42/upstream/${MY_PV}.tgz"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="amd64 x86"
+IUSE="alsa"
+
+DEPEND="dev-libs/atk
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf
+	x11-libs/gtk+:2
+	x11-libs/pango
+	alsa? ( media-libs/alsa-lib )"
+
+RDEPEND="${DEPEND}
+	x11-libs/libX11
+	x11-libs/libXmu"
+
+S="${WORKDIR}/${MY_PV}"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-2.0.10-fix-makefile.patch"
+	"${FILESDIR}/${PN}-2.0.10-fix-build-intel-lib.patch"
+)
+
+src_prepare() {
+	default
+}
+
+src_compile() {
+	local myconf
+	use alsa && myconf="AUDIO_ALSA=yes"
+	emake CC="$(tc-getCC)" CXX="$(tc-getCXX)" BCD_MATH=1 ${myconf} -C "${S}/gtk"
+}
+
+src_install() {
+	dodoc CREDITS HISTORY README
+	dobin gtk/free42dec
+}