dev-libs/crypto++: add explicit cpu_flags_x86 flag

Closes: https://bugs.gentoo.org/show_bug.cgi?id=689162
Signed-off-by: Alon Bar-Lev <alonbl@gentoo.org>
Package-Manager: Portage-2.3.66, Repoman-2.3.11

3 files changed, 72 insertions, 0 deletions

diff --git a/dev-libs/crypto++/crypto++-8.2.0-r1.ebuild b/dev-libs/crypto++/crypto++-8.2.0-r1.ebuild
new file mode 100644
index 000000000000..41b85ded0216
--- /dev/null
+++ b/dev-libs/crypto++/crypto++-8.2.0-r1.ebuild
@@ -0,0 +1,60 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit flag-o-matic toolchain-funcs
+
+DESCRIPTION="C++ class library of cryptographic schemes"
+HOMEPAGE="https://cryptopp.com"
+SRC_URI="https://www.cryptopp.com/cryptopp${PV//.}.zip"
+
+LICENSE="Boost-1.0"
+SLOT="0/8" # subslot is so version
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~sparc ~x86 ~x64-macos"
+IUSE="+asm cpu_flags_x86_aes cpu_flags_x86_avx cpu_flags_x86_avx2 cpu_flags_x86_pclmul cpu_flags_x86_sha cpu_flags_x86_sse2 cpu_flags_x86_sse4_2 cpu_flags_x86_ssse3 static-libs"
+
+BDEPEND="app-arch/unzip"
+
+S="${WORKDIR}"
+
+PATCHES=(
+	"${FILESDIR}/${P}-build.patch"
+)
+
+config_add() {
+	sed -i -e "/Important Settings/a#define $1 1" config.h || die
+}
+
+pkg_setup() {
+	export CXX="$(tc-getCXX)"
+	export LIBDIR="${EPREFIX}/usr/$(get_libdir)"
+	export PREFIX="${EPREFIX}/usr"
+}
+
+src_prepare() {
+	default
+
+	use asm || config_add CRYPTOPP_DISABLE_ASM
+	use cpu_flags_x86_aes || config_add CRYPTOPP_DISABLE_AESNI
+	use cpu_flags_x86_avx || config_add CRYPTOPP_DISABLE_AVX
+	use cpu_flags_x86_avx2 || config_add CRYPTOPP_DISABLE_AVX2
+	use cpu_flags_x86_pclmul || config_add CRYPTOPP_DISABLE_CLMUL
+	use cpu_flags_x86_sha || config_add CRYPTOPP_DISABLE_SHANI
+	use cpu_flags_x86_sse2 || config_add CRYPTOPP_DISABLE_SSE2
+	use cpu_flags_x86_sse4_2 || config_add CRYPTOPP_DISABLE_SSE4
+	use cpu_flags_x86_ssse3 || config_add CRYPTOPP_DISABLE_SSSE3
+
+	# ASM isn't Darwin/Mach-O ready, #479554, buildsys doesn't grok CPPFLAGS
+	[[ ${CHOST} == *-darwin* ]] && config_add CRYPTOPP_DISABLE_ASM
+}
+
+src_compile() {
+	emake -f GNUmakefile all shared libcryptopp.pc
+}
+
+src_install() {
+	default
+
+	use static-libs || rm -f "${ED}${EPREFIX}"/usr/$(get_libdir)/*.a
+}
diff --git a/dev-libs/crypto++/files/crypto++-8.2.0-build.patch b/dev-libs/crypto++/files/crypto++-8.2.0-build.patch
new file mode 100644
index 000000000000..903c6817e86f
--- /dev/null
+++ b/dev-libs/crypto++/files/crypto++-8.2.0-build.patch
@@ -0,0 +1,11 @@
+--- a/config.h	2019-07-02 19:25:10.448720035 +0300
++++ a/config.h	2019-07-02 19:25:25.785455586 +0300
+@@ -514,7 +514,7 @@ NAMESPACE_END
+ #endif

+ 

+ // 32-bit SunCC does not enable SSE2 by default.

+-#if !defined(CRYPTOPP_DISABLE_ASM) && (defined(_MSC_VER) || CRYPTOPP_GCC_VERSION >= 30300 || defined(__SSE2__) || (__SUNPRO_CC >= 0x5100))

++#if !defined(CRYPTOPP_DISABLE_ASM) && !defined(CRYPTOPP_DISABLE_SSE2) && (defined(_MSC_VER) || CRYPTOPP_GCC_VERSION >= 30300 || defined(__SSE2__) || (__SUNPRO_CC >= 0x5100))

+ 	#define CRYPTOPP_SSE2_INTRIN_AVAILABLE 1

+ #endif

+ 

diff --git a/dev-libs/crypto++/metadata.xml b/dev-libs/crypto++/metadata.xml
index 3227b3be7c78..4ceb05b8abe2 100644
--- a/dev-libs/crypto++/metadata.xml
+++ b/dev-libs/crypto++/metadata.xml
@@ -11,6 +11,7 @@
 	</maintainer>
 	<use>
 		<flag name="asm">Support assembly hand optimized crypto functions (i.e. faster run time)</flag>
+		<flag name="cpu_flags_x86_sha">Enable support for Intel's SHA instruction set (SHA-NI)</flag>
 	</use>
 	<upstream>
 		<remote-id type="github">weidai11/cryptopp</remote-id>