Install Firefox

Attempting to cross-compile Firefox will be rather challenging.  It has
loads of dependencies, written in a variety of languages.  Some issues
are more interesting than others.  Notably, _dev-libs/nss_ needs to be
installed on the host in order to cross-compile itself, but its ebuild
does not specify this ([Bug 759127][0]).  Also the build system for
_gnome-base/librsvg_ is broken: [Gentoo Bug 835758][1], [GNOME
Issue #810][2].  Cross-compiling _dev-libs/gobject-introspection_ is
also broken ([Bug 759127][3], [850895][4]).

With all of these changes, we can get to the point where Portage starts
building Firefox, it will take hours and all of my machine's resources,
so I haven't tested if will actually build.  We shall see once Jenkins
tries it...

[0]: https://bugs.gentoo.org/759127
[1]: https://bugs.gentoo.org/835758
[2]: https://gitlab.gnome.org/GNOME/librsvg/-/issues/810
[3]: https://bugs.gentoo.org/850895
[4]: https://bugs.gentoo.org/751325

install.packages

@@ -1 +1,2 @@
 net-wireless/wpa_supplicant
+www-client/firefox

portage/make.conf/60-use.conf

@@ -0,0 +1 @@
+USE="${USE} -python -readline"

portage/make.conf/introspection.conf

@@ -0,0 +1,4 @@
+# Disable GObject introspection because it cannot be cross-compiled
+# https://bugs.gentoo.org/850895
+# https://bugs.gentoo.org/751325
+USE="${USE} -introspection -vala"

portage/make.conf/videocore.conf

@@ -0,0 +1 @@
+VIDEO_CARDS='v3d vc4'

portage/make.conf/wayland.conf

@@ -0,0 +1 @@
+USE="${USE} -X wayland"

portage/package.accept_keywords/firefox

@@ -0,0 +1 @@
+dev-libs/nss ~amd64

portage/package.use/firefox

@@ -0,0 +1,6 @@
+media-libs/harfbuzz -cairo
+media-libs/libvpx postproc
+media-libs/mesa -llvm wayland
+media-video/ffmpeg openssl -gnutls
+www-client/firefox -telemetry dbus wayland
+x11-libs/gtk+ wayland

portage/patches/gnome-base/librsvg/do-not-build-rsvg-convert.patch

@@ -0,0 +1,48 @@
+--- a/Makefile.in	2024-12-13 12:17:08.339616211 -0600
++++ b/Makefile.in	2024-12-13 12:18:30.301517960 -0600
+@@ -641,12 +641,6 @@
+ 	rsvg/src/test_utils/reference_utils.rs		\
+ 	rsvg-bench/Cargo.toml				\
+ 	rsvg-bench/src/main.rs				\
+-	rsvg_convert/tests/internal_predicates/file.rs	\
+-	rsvg_convert/tests/internal_predicates/mod.rs	\
+-	rsvg_convert/tests/internal_predicates/pdf.rs	\
+-	rsvg_convert/tests/internal_predicates/png.rs	\
+-	rsvg_convert/tests/internal_predicates/svg.rs	\
+-	rsvg_convert/tests/rsvg_convert.rs		\
+ 	librsvg-c/tests/legacy_sizing.rs		\
+ 	gdk-pixbuf-loader/Cargo.toml			\
+ 	gdk-pixbuf-loader/src/lib.rs			\
+@@ -685,15 +679,6 @@
+ librsvgincdir = $(includedir)/librsvg-$(RSVG_API_VERSION)/librsvg
+ librsvginc_HEADERS = $(librsvg_public_headers)
+ 
+-# Use SCRIPTS instead of PROGRAMS since we build it on our own
+-bin_SCRIPTS = rsvg-convert$(EXEEXT)
+-RSVG_CONVERT_BIN = $(CARGO_TARGET_DIR)/$(RUST_TARGET_SUBDIR)/rsvg-convert$(EXEEXT)
+-RSVG_CONVERT_SRC = \
+-	rsvg_convert/Cargo.toml			\
+-	rsvg_convert/build.rs			\
+-	rsvg_convert/src/main.rs		\
+-	$(NULL)
+-
+ @HAVE_RST2MAN_TRUE@man1_MANS = rsvg-convert.1
+ dist_doc_DATA = \
+ 	README.md			\
+@@ -1643,16 +1628,6 @@
+ 	$(CARGO) --locked build $(CARGO_VERBOSE) $(CARGO_TARGET_ARGS) $(CARGO_RELEASE_ARGS) --package librsvg-c \
+ 	&& cd $(LIBRSVG_BUILD_DIR) && $(LINK) $< && cp $(RUST_LIB) .libs/librsvg_c_api.a
+ 
+-$(RSVG_CONVERT_BIN): $(RSVG_CONVERT_SRC) | librsvg_c_api.la
+-	+cd $(top_srcdir) &&							\
+-	PKG_CONFIG_ALLOW_CROSS=1						\
+-	PKG_CONFIG='$(PKG_CONFIG)'						\
+-	CARGO_TARGET_DIR=$(CARGO_TARGET_DIR)					\
+-	$(CARGO) --locked build $(CARGO_VERBOSE) $(CARGO_TARGET_ARGS) $(CARGO_RELEASE_ARGS) --package rsvg_convert
+-
+-rsvg-convert$(EXEEXT): $(RSVG_CONVERT_BIN)
+-	cd $(LIBRSVG_BUILD_DIR) && cp $(RSVG_CONVERT_BIN) rsvg-convert$(EXEEXT)
+-
+ rsvg-convert.1: rsvg-convert.rst
+ @HAVE_RST2MAN_TRUE@	$(RST2MAN) $(top_srcdir)/rsvg-convert.rst rsvg-convert.1
+ @HAVE_RST2MAN_FALSE@	@echo "========================================"

prepare.sh

@@ -6,3 +6,14 @@ fi
 if [ "$(find /var/db/repos/gentoo/metadata -newermt '-24 hours' | wc -l)" -eq 0 ]; then
     emaint sync
 fi
+
+mkdir -p /etc/portage/package.use
+mkdir -p /etc/portage/make.conf
+cp portage/package.use/firefox /etc/portage/package.use/
+cp portage/make.conf/introspection.conf /etc/portage/make.conf/
+cp portage/make.conf/wayland.conf /etc/portage/make.conf/
+echo 'VIDEO_CARDS=""' > /etc/portage/make.conf/videocards.conf
+
+xargs -r emerge -vbknuUj --rebuilt-binaries=y --color=y <<EOF
+dev-libs/nss
+EOF