sys-boot/gnu-efi: Fix compilation on musl amd64

On amd64, musl typedefs wchar_t to int, conflicting with -fshort-wchar.
Also, /usr/include is searched before the compiler provided include
directory.
As a workaround, use -nostdinc and switch them around.

Closes: https://bugs.gentoo.org/933080
Bug: https://bugs.gentoo.org/938012
Signed-off-by: Viorel Munteanu <ceamac@gentoo.org>

1 files changed, 128 insertions, 0 deletions

diff --git a/sys-boot/gnu-efi/gnu-efi-3.0.18-r4.ebuild b/sys-boot/gnu-efi/gnu-efi-3.0.18-r4.ebuild
new file mode 100644
index 000000000000..b34d3a74c7db
--- /dev/null
+++ b/sys-boot/gnu-efi/gnu-efi-3.0.18-r4.ebuild
@@ -0,0 +1,128 @@
+# Copyright 2004-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit flag-o-matic toolchain-funcs
+
+DESCRIPTION="Library for build EFI Applications"
+HOMEPAGE="https://sourceforge.net/projects/gnu-efi/"
+SRC_URI="https://downloads.sourceforge.net/gnu-efi/${P}.tar.bz2"
+
+# inc/, lib/ dirs (README.efilib)
+# - BSD-2
+# gnuefi dir:
+# - BSD (3-cluase): crt0-efi-ia32.S
+# - GPL-2+ : setjmp_ia32.S
+LICENSE="GPL-2+ BSD BSD-2"
+SLOT="0"
+KEYWORDS="-* ~amd64 ~arm ~arm64 ~ia64 ~riscv ~x86"
+IUSE="abi_x86_32 abi_x86_64 custom-cflags"
+REQUIRED_USE="
+	amd64? ( || ( abi_x86_32 abi_x86_64 ) )
+	x86? ( || ( abi_x86_32 abi_x86_64 ) )
+"
+
+# for ld.bfd and objcopy
+BDEPEND="sys-devel/binutils"
+
+# These objects get run early boot (i.e. not inside of Linux),
+# so doing these QA checks on them doesn't make sense.
+QA_EXECSTACK="usr/*/lib*efi.a:* usr/*/crt*.o"
+RESTRICT="strip"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-clang.patch
+	"${FILESDIR}"/${PN}-3.0.18-remove-linux-headers.patch
+)
+
+check_and_set_objcopy() {
+	if [[ ${MERGE_TYPE} != "binary" ]]; then
+		# bug #931792
+		# llvm-objcopy does not support EFI target, try to use binutils objcopy or fail
+		tc-export OBJCOPY
+		OBJCOPY="${OBJCOPY/llvm-/}"
+		LANG=C LC_ALL=C "${OBJCOPY}" --help | grep -q '\<pei-' || die "${OBJCOPY} (objcopy) does not support EFI target"
+	fi
+}
+
+check_comppiler() {
+	if [[ ${MERGE_TYPE} != "binary" ]]; then
+		tc-is-gcc || tc-is-clang || die "Unsupported compiler"
+	fi
+}
+
+pkg_pretend() {
+	check_comppiler
+	check_and_set_objcopy
+}
+
+pkg_setup() {
+	check_and_set_objcopy
+}
+
+src_prepare() {
+	default
+	sed -i -e "s/-Werror//" Make.defaults || die
+}
+
+efimake() {
+	local arch=
+	case ${CHOST} in
+		arm*) arch=arm ;;
+		aarch64*) arch=aarch64 ;;
+		ia64*) arch=ia64 ;;
+		i?86*) arch=ia32 ;;
+		riscv64*) arch=riscv64;;
+		x86_64*) arch=x86_64 ;;
+		*) die "Unknown CHOST" ;;
+	esac
+
+	local args=(
+		ARCH="${arch}"
+		HOSTCC="${BUILD_CC}"
+		CC="${CC}"
+		AS="${AS}"
+		LD="${LD}"
+		AR="${AR}"
+		OBJCOPY="${OBJCOPY}"
+		PREFIX="${EPREFIX}/usr"
+		LIBDIR='$(PREFIX)'/$(get_libdir)
+	)
+	emake -j1 "${args[@]}" "$@"
+}
+
+src_compile() {
+	tc-export BUILD_CC AR AS CC LD OBJCOPY
+
+	if ! use custom-cflags; then
+		unset CFLAGS CPPFLAGS LDFLAGS
+	fi
+
+	# work around musl: include first the compiler include dir, then the system one
+	# bug #933080, #938012
+	local CPPINCLUDEDIR
+	if tc-is-gcc; then
+		CPPINCLUDEDIR=$(LANG=C ${CC} -print-search-dirs 2> /dev/null | grep ^install: | cut -f2 -d' ')/include
+	elif tc-is-clang; then
+		CPPINCLUDEDIR=$(LANG=C ${CC} -print-resource-dir 2> /dev/null)/include
+	fi
+	append-cflags "-nostdinc -isystem ${CPPINCLUDEDIR} -isystem ${ESYSROOT}/usr/include"
+
+	if use amd64 || use x86; then
+		use abi_x86_32 && CHOST=i686 ABI=x86 efimake
+		use abi_x86_64 && CHOST=x86_64 ABI=amd64 efimake
+	else
+		efimake
+	fi
+}
+
+src_install() {
+	if use amd64 || use x86; then
+		use abi_x86_32 && CHOST=i686 ABI=x86 efimake INSTALLROOT="${D}" install
+		use abi_x86_64 && CHOST=x86_64 ABI=amd64 efimake INSTALLROOT="${D}" install
+	else
+		efimake INSTALLROOT="${D}" install
+	fi
+	einstalldocs
+}