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CMake scripts cleanups #680

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merged 8 commits into from
May 11, 2021
Merged

CMake scripts cleanups #680

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826e451
iiod: Use WITH_AIO instead of ENABLE_AIO
pcercuei May 5, 2021
70c4e0e
network: Fix IN6_IS_ADDR_LINKLOCAL() macro on old OSes
pcercuei May 7, 2021
adf33f2
CMake: Move check for pthread_setname_np to IIOD
pcercuei May 7, 2021
57db981
CMake: Don't compile with -D_GNU_SOURCE
pcercuei May 5, 2021
e8b3574
CMake: Make options independant from environment
pcercuei May 4, 2021
9c87375
CI: Update build script for Mac OSX
pcercuei May 6, 2021
ff96fc8
CI: Update build script for Windows
pcercuei May 6, 2021
c31cc2f
CI: Update build script for Linux
pcercuei May 6, 2021
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2 changes: 1 addition & 1 deletion CI/build_win.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -7,5 +7,5 @@ $src_dir=$pwd
mkdir build
cd build

cmake -G "$COMPILER" -A "$ARCH" -DPYTHON_BINDINGS=ON -DLIBXML2_LIBRARIES="$src_dir\deps\lib\libxml2.dll.a" ..
cmake -G "$COMPILER" -A "$ARCH" -DENABLE_IPV6=OFF -DWITH_USB_BACKEND=OFF -DWITH_SERIAL_BACKEND=OFF -DPYTHON_BINDINGS=ON -DLIBXML2_LIBRARIES="$src_dir\deps\lib\libxml2.dll.a" ..
cmake --build . --config Release
2 changes: 1 addition & 1 deletion CI/travis/before_install_darwin
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Expand Up @@ -2,4 +2,4 @@

. CI/travis/lib.sh

brew_install_if_not_exists cmake doxygen libusb libxml2 ncurses cdk
brew_install_if_not_exists cmake doxygen libusb libxml2 ncurses cdk zstd
4 changes: 2 additions & 2 deletions CI/travis/before_install_linux
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Expand Up @@ -27,7 +27,7 @@ handle_centos() {
# FIXME: see about adding `libserialport-dev` from EPEL ; maybe libusb-1.0.0-devel...
yum -y groupinstall 'Development Tools'
yum -y install cmake libxml2-devel libusb1-devel libaio-devel \
bzip2 gzip rpm rpm-build
bzip2 gzip rpm rpm-build libzstd-devel

if [ "$(get_version | head -c 1)" = "7" ] ; then
# install Cmake3, and make it the default
Expand Down Expand Up @@ -66,7 +66,7 @@ handle_generic_docker() {
handle_default() {
sudo apt-get -qq update
sudo DEBIAN_FRONTEND=noninteractive apt-get install -y cmake graphviz \
libaio-dev libavahi-client-dev libserialport-dev \
libaio-dev libavahi-client-dev libserialport-dev libzstd-dev \
libavahi-common-dev libusb-1.0-0-dev libxml2-dev rpm tar \
bzip2 gzip flex bison git libncurses5-dev libcdk5-dev \
doxygen man2html python3 python3-pip python3-setuptools
Expand Down
6 changes: 4 additions & 2 deletions CI/travis/make_darwin
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
#!/bin/sh -e

LIBIIO_BUILD_CONF="-DWITH_SERIAL_BACKEND=OFF -DWITH_ZSTD=ON"

if [ "x${COVERITY_SCAN_PROJECT_NAME}" != "x" ] ; then exit 0; fi


Expand All @@ -18,13 +20,13 @@ build_osx() {
mkdir -p build

cd build
build_osx "-DOSX_PACKAGE=ON -DPYTHON_BINDINGS=ON -DWITH_EXAMPLES=ON"
build_osx "-DOSX_PACKAGE=ON -DPYTHON_BINDINGS=ON -DWITH_EXAMPLES=ON ${LIBIIO_BUILD_CONF}"

cd ..

mkdir -p build_tar
cd build_tar
build_osx "-DOSX_PACKAGE=OFF -DENABLE_PACKAGING=ON -DPYTHON_BINDINGS=ON"
build_osx "-DOSX_PACKAGE=OFF -DENABLE_PACKAGING=ON -DPYTHON_BINDINGS=ON ${LIBIIO_BUILD_CONF}"
echo "### make package"
make package
echo "### files are"
Expand Down
15 changes: 14 additions & 1 deletion CI/travis/make_linux
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,13 @@ handle_default() {

FLAGS="-DENABLE_PACKAGING=ON -DDEB_DETECT_DEPENDENCIES=ON -DWITH_EXAMPLES=ON ${PYTHON_HELP} ${DOC_HELP} ${MAN_HELP}"

# Ubuntu Xenial's libserialport and libzstd are too old
if [ "${OS_VERSION}" = xenial ] ; then
FLAGS="${FLAGS} -DWITH_SERIAL_BACKEND=OFF"
else
FLAGS="${FLAGS} -DWITH_ZSTD=ON"
fi

echo "### cmake ${FLAGS}"
cmake ${FLAGS} ..

Expand Down Expand Up @@ -103,7 +110,13 @@ handle_centos() {
echo "handle centos"
mkdir -p build
cd build
cmake -DENABLE_PACKAGING=ON -DPYTHON_BINDINGS=ON ..

FLAGS="-DENABLE_PACKAGING=ON -DPYTHON_BINDINGS=ON -DWITH_SERIAL_BACKEND=OFF -DWITH_ZSTD=ON"

# CentOS 7's kernel headers are too old for USB support in IIOD
[ "${OS_VERSION}" = centos7 ] && FLAGS="${FLAGS} -DWITH_IIOD_USBD=OFF"

cmake ${FLAGS} ..
make
make package
cd ..
Expand Down
190 changes: 96 additions & 94 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ if (NOT CMAKE_BUILD_TYPE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS None Debug Release RelWithDebInfo MinSizeRel)
endif()

set(BUILD_SHARED_LIBS ON CACHE BOOL "Build shared libraries")
option(BUILD_SHARED_LIBS "Build shared libraries" ON)

if (NOT BUILD_SHARED_LIBS)
add_definitions(-DLIBIIO_STATIC=1)
Expand Down Expand Up @@ -120,9 +120,6 @@ endif()
if(APPLE)
#full Single Unix Standard v3 (SUSv3) conformance (the Unix API)
add_definitions(-D_DARWIN_C_SOURCE)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE=1")
add_definitions(-D_GNU_SOURCE=1)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD|DragonFly|OpenBSD|NetBSD")
set(CMAKE_REQUIRED_DEFINITIONS "-D__BSD_VISIBLE")
add_definitions(-D__BSD_VISIBLE=1)
Expand All @@ -135,29 +132,25 @@ check_symbol_exists(strndup "string.h" HAS_STRNDUP)
check_symbol_exists(strerror_r "string.h" HAS_STRERROR_R)
check_symbol_exists(newlocale "locale.h" HAS_NEWLOCALE)

if (NOT WIN32)
find_library(PTHREAD_LIBRARIES pthread)
set(CMAKE_REQUIRED_LIBRARIES ${PTHREAD_LIBRARIES})
check_symbol_exists(pthread_setname_np "pthread.h" HAS_PTHREAD_SETNAME_NP)
set(CMAKE_REQUIRED_LIBRARIES)
endif()

option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
if (ENABLE_IPV6)
check_symbol_exists(in6addr_any "netinet/in.h" HAVE_IPV6)
if (NOT HAVE_IPV6)
message(WARNING "IPv6 is not available in your system.")
message(SEND_ERROR "IPv6 is not available in your system.")
endif()
endif()

#Handle FreeBSD libusb and Linux libusb-1.0 libraries
find_library(LIBUSB_LIBRARIES NAMES usb-1.0 usb)
find_path(LIBUSB_INCLUDE_DIR libusb.h PATH_SUFFIXES libusb-1.0)
if (LIBUSB_LIBRARIES AND LIBUSB_INCLUDE_DIR)
message(STATUS "Looking for libusb-1.0 : Found")
option(WITH_USB_BACKEND "Enable the libusb backend" ON)
option(WITH_USB_BACKEND "Enable the libusb backend" ON)
if (WITH_USB_BACKEND)
#Handle FreeBSD libusb and Linux libusb-1.0 libraries
find_library(LIBUSB_LIBRARIES NAMES usb-1.0 usb)
find_path(LIBUSB_INCLUDE_DIR libusb.h PATH_SUFFIXES libusb-1.0)
if (NOT LIBUSB_LIBRARIES OR NOT LIBUSB_INCLUDE_DIR)
message(SEND_ERROR "Unable to find libusb-1.0 dependency.\n"
"If you want to disable the USB backend, set WITH_USB_BACKEND=OFF.")
else()
message(STATUS "Looking for libusb-1.0 : Found")

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Hmm, you can disregard my previous comment 👍

if(WITH_USB_BACKEND)
set(IIOD_CLIENT 1)
set(NEED_LIBXML2 1)
set(NEED_THREADS 1)
Expand All @@ -168,13 +161,10 @@ if (LIBUSB_LIBRARIES AND LIBUSB_INCLUDE_DIR)
set(TEMP1 ${CMAKE_REQUIRED_INCLUDES})
list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBUSB_LIBRARIES})
list(APPEND CMAKE_REQUIRED_INCLUDES ${LIBUSB_INCLUDE_DIR})
check_symbol_exists(libusb_get_version libusb.h
HAS_LIBUSB_GETVERSION)
check_symbol_exists(libusb_get_version libusb.h HAS_LIBUSB_GETVERSION)
set(CMAKE_REQUIRED_LIBRARIES ${TEMP})
set(CMAKE_REQUIRED_INCLUDES ${TEMP1})
set(CMAKE_REQUIRED_INCLUDES ${TEMP1})
endif()
else()
message(STATUS "Looking for libusb-1.0 : Failed; building without usb")
endif()

# make sure all check_symbol_exists are before this point, otherwise they fail
Expand Down Expand Up @@ -260,31 +250,31 @@ if(WITH_LOCAL_BACKEND)
endif()
endif()

find_library(LIBSERIALPORT_LIBRARIES serialport)
find_path(LIBSERIALPORT_INCLUDE_DIR libserialport.h)
if (LIBSERIALPORT_LIBRARIES AND LIBSERIALPORT_INCLUDE_DIR)
option(WITH_SERIAL_BACKEND "Enable the serial backend" ON)
option(WITH_SERIAL_BACKEND "Enable the serial backend" ON)
if (WITH_SERIAL_BACKEND)
find_library(LIBSERIALPORT_LIBRARIES serialport)
find_path(LIBSERIALPORT_INCLUDE_DIR libserialport.h)
if (NOT LIBSERIALPORT_LIBRARIES OR NOT LIBSERIALPORT_INCLUDE_DIR)
message(SEND_ERROR "Unable to find libserialport dependency.\n"
"If you want to disable the serial backend, set WITH_SERIAL_BACKEND=OFF.")
else()
message(STATUS "Looking for libserialport : Found")

if (WITH_SERIAL_BACKEND)
file(STRINGS ${LIBSERIALPORT_INCLUDE_DIR}/libserialport.h LIBSERIALPORT_VERSION_STR REGEX "SP_PACKAGE_VERSION_STRING")
string(REGEX REPLACE "#define SP_PACKAGE_VERSION_STRING \"(.*)\"" "\\1" LIBSERIALPORT_VERSION ${LIBSERIALPORT_VERSION_STR})
if ("${LIBSERIALPORT_VERSION}" VERSION_LESS 0.1.1)
message(WARNING "The installed version of libserialport is too old. The minimum version supported is 0.1.1. Disabling Serial support.")
SET(WITH_SERIAL_BACKEND OFF)
else()
message(STATUS "Looking for libserialport : Found")
list(APPEND LIBIIO_CFILES serial.c)
list(APPEND LIBS_TO_LINK ${LIBSERIALPORT_LIBRARIES})

set(NEED_THREADS 1)
set(IIOD_CLIENT 1)
set(NEED_LIBXML2 1)

include_directories(${LIBSERIALPORT_INCLUDE_DIR})
message(SEND_ERROR "The installed version of libserialport is too old. The minimum version supported is 0.1.1.")
endif()

list(APPEND LIBIIO_CFILES serial.c)
list(APPEND LIBS_TO_LINK ${LIBSERIALPORT_LIBRARIES})

set(NEED_THREADS 1)
set(IIOD_CLIENT 1)
set(NEED_LIBXML2 1)

include_directories(${LIBSERIALPORT_INCLUDE_DIR})
endif()
else()
message(STATUS "Looking for libserialport : Failed; building without serial")
endif()

option(WITH_ZSTD "Support for ZSTD compressed metadata" OFF)
Expand All @@ -293,7 +283,8 @@ if (WITH_ZSTD)
find_path(LIBZSTD_INCLUDE_DIR zstd.h)

if (NOT LIBZSTD_LIBRARIES OR NOT LIBZSTD_INCLUDE_DIR)
message(SEND_ERROR "Unable to find libzstd")
message(SEND_ERROR "Unable to find libzstd dependency.\n"
"If you want to disable ZSTD compression support, set WITH_ZSTD=OFF.")
endif()

list(APPEND LIBS_TO_LINK ${LIBZSTD_LIBRARIES})
Expand All @@ -309,12 +300,15 @@ if(WITH_NETWORK_BACKEND)
endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
include(CheckCSourceCompiles)
check_c_source_compiles("#include <fcntl.h>\nint main(void) { return O_TMPFILE; }" HAS_O_TMPFILE)

if (HAS_O_TMPFILE)
option(WITH_NETWORK_GET_BUFFER "Enable experimental zero-copy transfers" OFF)
endif(HAS_O_TMPFILE)
option(WITH_NETWORK_GET_BUFFER "Enable experimental zero-copy transfers" OFF)
if (WITH_NETWORK_GET_BUFFER)
include(CheckCSourceCompiles)
check_c_source_compiles("#include <fcntl.h>\nint main(void) { return O_TMPFILE; }" HAS_O_TMPFILE)

if (NOT HAS_O_TMPFILE)
message(SEND_ERROR "Zero-copy requires the O_TMPFILE flag, which is not available on the system.")
endif()
endif()

check_c_source_compiles("#include <sys/eventfd.h>\nint main(void) { return eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK); }" WITH_NETWORK_EVENTFD)
endif()
Expand All @@ -331,34 +325,37 @@ if(WITH_NETWORK_BACKEND)
list(APPEND LIBIIO_CFILES network-unix.c)
endif()

find_library(AVAHI_CLIENT_LIBRARIES avahi-client)
find_library(AVAHI_COMMON_LIBRARIES avahi-common)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
option(HAVE_DNS_SD "Enable DNS-SD (ZeroConf) support" ON)
if (NOT HAVE_DNS_SD)
message(STATUS "Building without DNS-SD (ZeroConf) support")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
find_library(CORE_SERVICES CoreServices)

message(STATUS "Building with CFNetServices, an Apple DNS SD implementation")
set(HAVE_DNS_SD ON)

list(APPEND LIBIIO_CFILES dns_sd_bonjour.c dns_sd.c)
list(APPEND LIBS_TO_LINK ${CORE_SERVICES} )

elseif(AVAHI_CLIENT_LIBRARIES AND AVAHI_COMMON_LIBRARIES)
message(STATUS "Building with Avahi, a DNS SD implementation")
set(HAVE_DNS_SD ON)
set(HAVE_AVAHI ON)

list(APPEND LIBIIO_CFILES dns_sd_avahi.c dns_sd.c)
set(AVAHI_LIBRARIES ${AVAHI_CLIENT_LIBRARIES} ${AVAHI_COMMON_LIBRARIES})
list(APPEND LIBS_TO_LINK ${AVAHI_LIBRARIES})
elseif(WIN32)
set(HAVE_DNS_SD ON)
list(APPEND LIBIIO_CFILES dns_sd_windows.c dns_sd.c)
if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
set_source_files_properties(dns_sd_windows.c PROPERTIES COMPILE_FLAGS "-Wno-unused-function")
endif()
message(STATUS "Building with mdns, A Public domain mDNS/DNS-SD library in C ")
else()
message(STATUS "Building without DNS-SD (Zeroconf) support")
find_library(AVAHI_CLIENT_LIBRARIES avahi-client)
find_library(AVAHI_COMMON_LIBRARIES avahi-common)
if (NOT AVAHI_CLIENT_LIBRARIES OR NOT AVAHI_COMMON_LIBRARIES)
message(SEND_ERROR "Unable to find libavahi-common / libavahi-client dependencies.\n"
"If you want to disable DNS-SD (ZeroConf) support, set HAVE_DNS_SD=OFF.")
endif()

message(STATUS "Building with Avahi, a DNS-SD (ZeroConf) implementation")
set(HAVE_AVAHI ON)

list(APPEND LIBIIO_CFILES dns_sd_avahi.c dns_sd.c)
set(AVAHI_LIBRARIES ${AVAHI_CLIENT_LIBRARIES} ${AVAHI_COMMON_LIBRARIES})
list(APPEND LIBS_TO_LINK ${AVAHI_LIBRARIES})
endif()

set(NEED_THREADS 1)
Expand All @@ -368,42 +365,47 @@ else()
message(STATUS "Building without network support")
endif()

# Since libxml2-2.9.2, libxml2 provides its own LibXml2-config.cmake, with all
# variables correctly set.
# So, try first to find the CMake module provided by libxml2 package, then fallback
# on the CMake's FindLibXml2.cmake module (which can lack some definition, especially
# in static build case).
find_package(LibXml2 QUIET NO_MODULE)
if(DEFINED LIBXML2_VERSION_STRING)
set(LIBXML2_FOUND ON)
set(LIBXML2_INCLUDE_DIR ${LIBXML2_INCLUDE_DIRS})
else()
include(FindLibXml2)
endif()

if (LIBXML2_FOUND)
option(WITH_XML_BACKEND "Enable the XML backend" ON)

if (WITH_XML_BACKEND)
list(APPEND LIBIIO_CFILES xml.c)
option(WITH_XML_BACKEND "Enable the XML backend" ON)
if (WITH_XML_BACKEND)
# Since libxml2-2.9.2, libxml2 provides its own LibXml2-config.cmake, with all
# variables correctly set.
# So, try first to find the CMake module provided by libxml2 package, then fallback
# on the CMake's FindLibXml2.cmake module (which can lack some definition, especially
# in static build case).
find_package(LibXml2 QUIET NO_MODULE)
if(DEFINED LIBXML2_VERSION_STRING)
set(LIBXML2_FOUND ON)
set(LIBXML2_INCLUDE_DIR ${LIBXML2_INCLUDE_DIRS})
else()
include(FindLibXml2)
endif()

include_directories(${LIBXML2_INCLUDE_DIR})
list(APPEND LIBS_TO_LINK ${LIBXML2_LIBRARIES})
if (NOT LIBXML2_FOUND)
message(SEND_ERROR "Unable to find libxml2 dependency.\n"
"If you want to disable the XML backend, set WITH_XML_BACKEND=OFF.")
endif()
endif()

if (NEED_LIBXML2 AND NOT (LIBXML2_FOUND AND WITH_XML_BACKEND))
message(SEND_ERROR "The selected backends require libxml2 and the XML backend to be enabled")
list(APPEND LIBIIO_CFILES xml.c)

include_directories(${LIBXML2_INCLUDE_DIR})
list(APPEND LIBS_TO_LINK ${LIBXML2_LIBRARIES})
elseif(NEED_LIBXML2)
message(SEND_ERROR "Enabled backends require the XML backend to be enabled as well.\n"
"If you want to enable the XML backend, set WITH_XML_BACKEND=ON.")
endif()

if (NEED_THREADS)
option(NO_THREADS "Disable multi-threading support" OFF)
if (NEED_THREADS AND NOT NO_THREADS)
if (NOT WIN32)
if (PTHREAD_LIBRARIES)
list(APPEND LIBS_TO_LINK ${PTHREAD_LIBRARIES})
else()
message(WARNING "pthread library not found; support for threads will be disabled")
set(NO_THREADS ON)
find_library(PTHREAD_LIBRARIES pthread)

if (NOT PTHREAD_LIBRARIES)
message(SEND_ERROR "Unable to find pthread dependency.\n"
"If you want to disable multi-threading support, set NO_THREADS=ON.")
endif()

list(APPEND LIBS_TO_LINK ${PTHREAD_LIBRARIES})
endif()

list(APPEND LIBIIO_CFILES lock.c)
Expand Down Expand Up @@ -577,8 +579,8 @@ if(WITH_IIOD)
set(UPSTART_CONF_INSTALL_DIR /etc/init CACHE PATH "default install path for upstart conf files")

if (NOT PTHREAD_LIBRARIES)
message(WARNING "IIOD requires threads support; disabling")
set(WITH_IIOD OFF CACHE BOOL "" FORCE)
message(SEND_ERROR "IIOD requires pthread support\n."
"If you want to disable IIOD, set WITH_IIOD=OFF.")
else()
add_subdirectory(iiod)
endif()
Expand Down
2 changes: 1 addition & 1 deletion iio-config.h.cmakein
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Expand Up @@ -17,9 +17,9 @@
#cmakedefine01 WITH_NETWORK_EVENTFD
#cmakedefine01 WITH_IIOD_USBD
#cmakedefine01 WITH_LOCAL_CONFIG
#cmakedefine01 WITH_AIO
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@nunojsa nunojsa May 6, 2021 •
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Just a comment which has noting to do with this... We should definitely consider about replacing aio for io_uring and liburing for libiio2 😄

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Yes, I will definitely have a look at io_uring. I want to see if it can help us with zero-copy.

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It has both ring buffers shared between kernel and userspace so that's something already in the right way... Another neat thing is that we can potential reduce a lot the number of syscalls.

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But I assume the IIO subsystem needs to support it (does it?).

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Don't think so. At least for normal reads/writes on sysfs stuff. Now for ioctl (not sure if that stuff was merged; and yes, it seems io_uring is also allowing to re-implement ioctl), the last time I checked I think IIO would have to support it...

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https://lwn.net/Articles/844875/ - not idea the outcome of the RFC

#cmakedefine01 HAVE_DNS_SD
#cmakedefine01 HAVE_AVAHI
#cmakedefine01 ENABLE_AIO
#cmakedefine01 WITH_ZSTD

#cmakedefine HAS_PIPE2
Expand Down
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