libfolly: Update to 2019.06.10.00

Partially restore uclibc patch. Some parts were upstreamed while others
were not.

Fixes compilation without ChaCha20 support in OpenSSL 1.1 and above.

Depend on libunwind conditionally. libunwind is not supported on all
targets. Depending on it unconditionally makes libfolly and dependent
packages unavailable on those targets.

Added missing Maintainer.

Several Makefile rearrangements for consistency.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libfolly/Makefile

@@ -1,40 +1,32 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libfolly
-PKG_VERSION:=2019.05.27.00
+PKG_VERSION:=2019.06.10.00
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/facebook/folly/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=7535937e4b4bde14e6c854dc55a5fe9f290ccf1918621f20678ebecd0c1239e1
+PKG_HASH:=afecd68815a83865d95a3a6b861abe8096beefae45c89566e0d510279b631b57
 PKG_BUILD_DIR:=$(BUILD_DIR)/folly-$(PKG_VERSION)
 
+PKG_MAINTAINER:=Amol Bhave <ambhave@fb.com>
 PKG_LICENSE:=Apache-2.0
 PKG_LICENSE_FILES:=LICENSE
 
-include $(INCLUDE_DIR)/package.mk
-include $(INCLUDE_DIR)/cmake.mk
-
 PKG_BUILD_PARALLEL:=1
-CMAKE_OPTIONS:= \
-	-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-	-DCXX_STD=gnu++14 \
-	-DFOLLY_HAVE_UNALIGNED_ACCESS_EXITCODE=OFF \
-	-DFOLLY_HAVE_LINUX_VDSO_EXITCODE=OFF \
-	-DFOLLY_HAVE_WCHAR_SUPPORT_EXITCODE=OFF \
-	-DHAVE_VSNPRINTF_ERRORS_EXITCODE=OFF \
-	-DFOLLY_HAVE_XSI_STRERROR_R_EXITCODE=0 \
-	-DBUILD_SHARED_LIBS=ON
 CMAKE_INSTALL:=1
 
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
 define Package/libfolly
 	SECTION:=libs
 	CATEGORY:=Libraries
 	TITLE:=An open-source C++ library developed and used at Facebook.
 	URL:=https://github.com/facebook/folly
 	DEPENDS:=+boost +boost-context +boost-date_time +boost-filesystem +boost-program_options +boost-regex \
-		+libopenssl +libdouble-conversion +libevent2 +glog +libsodium +libaio +libunwind +libatomic \
-		+libbz2 +zlib +libzstd +liblzma +liblz4
+		+libopenssl +libdouble-conversion +libevent2 +glog +libsodium +libaio +libatomic \
+		+libbz2 +zlib +libzstd +liblzma +liblz4 +PACKAGE_libunwind:libunwind
 endef
 
 define Package/libfolly/description
@@ -45,6 +37,16 @@ define Package/libfolly/description
 	This package includes the shared library.
 endef
 
+CMAKE_OPTIONS += \
+	-DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+	-DCXX_STD=gnu++14 \
+	-DFOLLY_HAVE_UNALIGNED_ACCESS_EXITCODE=OFF \
+	-DFOLLY_HAVE_LINUX_VDSO_EXITCODE=OFF \
+	-DFOLLY_HAVE_WCHAR_SUPPORT_EXITCODE=OFF \
+	-DHAVE_VSNPRINTF_ERRORS_EXITCODE=OFF \
+	-DFOLLY_HAVE_XSI_STRERROR_R_EXITCODE=0 \
+	-DBUILD_SHARED_LIBS=ON
+
 define Package/libfolly/install
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libfolly*.so* $(1)/usr/lib/

libs/libfolly/patches/102-uclibc-patches.patch

@@ -0,0 +1,23 @@
+--- a/folly/CachelinePadded.h
++++ b/folly/CachelinePadded.h
+@@ -35,10 +35,6 @@ namespace folly {
+  */
+ template <typename T>
+ class CachelinePadded {
+-  static_assert(
+-      alignof(T) <= max_align_v,
+-      "CachelinePadded does not support over-aligned types.");
+-
+  public:
+   template <typename... Args>
+   explicit CachelinePadded(Args&&... args)
+--- a/folly/external/farmhash/farmhash.cpp
++++ b/folly/external/farmhash/farmhash.cpp
+@@ -181,6 +181,7 @@
+ 
+ #undef bswap_32
+ #undef bswap_64
++#undef _BYTESWAP_H
+ #include <byteswap.h>
+ 
+ #endif