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cmake: enable IPv6 by default if available

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ENABLE_IPV6 depends on HAVE_GETADDRINFO or you will get a
Curl_getaddrinfo_ex error. Enable IPv6 by default, disabling it if
struct sockaddr_in6 is not found in netinet/in.h.

Note that HAVE_GETADDRINFO_THREADSAFE is still not set as it needs more
platform checks even though POSIX requires a thread-safe getaddrinfo.

Verified on Arch Linux x86_64 with glibc 2.20-2 and Linux 3.16-rc7.

Signed-off-by: Peter Wu <peter@lekensteyn.nl>
This commit is contained in:
Peter Wu 2014-10-13 11:19:36 +02:00 committed by Daniel Stenberg
parent b55502cdae
commit aec7c5a87c
2 changed files with 15 additions and 2 deletions
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16
CMakeLists.txt
View File

@ -171,8 +171,21 @@ option(CURL_DISABLE_VERBOSE_STRINGS "to disable verbose strings" OFF)
mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
option(DISABLED_THREADSAFE "Set to explicitly specify we don't want to use thread-safe functions" OFF)
mark_as_advanced(DISABLED_THREADSAFE)
option(ENABLE_IPV6 "Define if you want to enable IPv6 support" OFF)
option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
mark_as_advanced(ENABLE_IPV6)
if(ENABLE_IPV6)
include(CheckStructHasMember)
check_struct_has_member("struct sockaddr_in6" sin6_addr "netinet/in.h"
HAVE_SOCKADDR_IN6_SIN6_ADDR)
check_struct_has_member("struct sockaddr_in6" sin6_scope_id "netinet/in.h"
HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
if(NOT HAVE_SOCKADDR_IN6_SIN6_ADDR)
message(WARNING "struct sockaddr_in6 not available, disabling IPv6 support")
# Force the feature off as this name is used as guard macro...
set(ENABLE_IPV6 OFF
CACHE BOOL "Define if you want to enable IPv6 support" FORCE)
endif()
endif()
option(ENABLE_MANUAL "to provide the built-in manual" ON)
unset(USE_MANUAL CACHE) # TODO: cache NROFF/NROFF_MANOPT/USE_MANUAL vars?
@ -731,6 +744,7 @@ check_symbol_exists(strerror_r "${CURL_INCLUDES}" HAVE_STRERROR_R)
check_symbol_exists(siginterrupt "${CURL_INCLUDES}" HAVE_SIGINTERRUPT)
check_symbol_exists(perror "${CURL_INCLUDES}" HAVE_PERROR)
check_symbol_exists(fork "${CURL_INCLUDES}" HAVE_FORK)
check_symbol_exists(getaddrinfo "${CURL_INCLUDES}" HAVE_GETADDRINFO)
check_symbol_exists(freeaddrinfo "${CURL_INCLUDES}" HAVE_FREEADDRINFO)
check_symbol_exists(freeifaddrs "${CURL_INCLUDES}" HAVE_FREEIFADDRS)
check_symbol_exists(pipe "${CURL_INCLUDES}" HAVE_PIPE)

1
docs/INSTALL.cmake
View File

@ -31,7 +31,6 @@ Current flaws in the curl CMake build
- Doesn't allow build curl and libcurl debug enabled
- Doesn't allow a custom CA bundle path
- Doesn't allow you to disable specific protocols from the build
- Doesn't properly enable IPv6 support by default
- Doesn't find or use krb4 or GSS
- Rebuilds test files too eagerly, but still can't run the tests