Imported Upstream version 7.53.1upstream/7.53.1

Change-Id: Id0454e17b6cb083c803c5497d34964dd8fa0dbc6

6 files changed, 186 insertions, 11 deletions

diff --git a/CMake/CurlSymbolHiding.cmake b/CMake/CurlSymbolHiding.cmake
new file mode 100644
index 000000000..9f7d29633
--- /dev/null
+++ b/CMake/CurlSymbolHiding.cmake
@@ -0,0 +1,61 @@
+include(CheckCSourceCompiles)
+
+option(CURL_HIDDEN_SYMBOLS "Set to ON to hide libcurl internal symbols (=hide all symbols that aren't officially external)." ON)
+mark_as_advanced(CURL_HIDDEN_SYMBOLS)
+
+if(CURL_HIDDEN_SYMBOLS)
+    set(SUPPORTS_SYMBOL_HIDING FALSE)
+
+    if(CMAKE_C_COMPILER_ID MATCHES "Clang")
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+        set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+    elseif(CMAKE_COMPILER_IS_GNUCC)
+        if(NOT CMAKE_VERSION VERSION_LESS 2.8.10)
+            set(GCC_VERSION ${CMAKE_C_COMPILER_VERSION})
+        else()
+            execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
+                            OUTPUT_VARIABLE GCC_VERSION)
+        endif()
+        if(NOT GCC_VERSION VERSION_LESS 3.4)
+            # note: this is considered buggy prior to 4.0 but the autotools don't care, so let's ignore that fact
+            set(SUPPORTS_SYMBOL_HIDING TRUE)
+            set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+            set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+        endif()
+    elseif(CMAKE_C_COMPILER_ID MATCHES "SunPro" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 8.0)
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__global")
+        set(_CFLAG_SYMBOLS_HIDE "-xldscope=hidden")
+    elseif(CMAKE_C_COMPILER_ID MATCHES "Intel" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 9.0)
+        # note: this should probably just check for version 9.1.045 but I'm not 100% sure
+        #       so let's to it the same way autotools do.
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+        set(_SYMBOL_EXTERN "__attribute__ ((__visibility__ (\"default\")))")
+        set(_CFLAG_SYMBOLS_HIDE "-fvisibility=hidden")
+        check_c_source_compiles("#include <stdio.h>
+            int main (void) { printf(\"icc fvisibility bug test\"); return 0; }" _no_bug)
+        if(NOT _no_bug)
+            set(SUPPORTS_SYMBOL_HIDING FALSE)
+            set(_SYMBOL_EXTERN "")
+            set(_CFLAG_SYMBOLS_HIDE "")
+        endif()
+    elseif(MSVC)
+        set(SUPPORTS_SYMBOL_HIDING TRUE)
+    endif()
+
+    set(HIDES_CURL_PRIVATE_SYMBOLS ${SUPPORTS_SYMBOL_HIDING})
+elseif(MSVC)
+    if(NOT CMAKE_VERSION VERSION_LESS 3.7)
+        set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE) #present since 3.4.3 but broken
+        set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
+    else()
+        message(WARNING "Hiding private symbols regardless CURL_HIDDEN_SYMBOLS being disabled.")
+        set(HIDES_CURL_PRIVATE_SYMBOLS TRUE)
+    endif()
+elseif()
+    set(HIDES_CURL_PRIVATE_SYMBOLS FALSE)
+endif()
+
+set(CURL_CFLAG_SYMBOLS_HIDE ${_CFLAG_SYMBOLS_HIDE})
+set(CURL_EXTERN_SYMBOL ${_SYMBOL_EXTERN})
diff --git a/CMake/CurlTests.c b/CMake/CurlTests.c
index ceff39151..bc36c8ef7 100644
--- a/CMake/CurlTests.c
+++ b/CMake/CurlTests.c
@@ -533,3 +533,19 @@ main () {
     return 0;
 }
 #endif
+#ifdef HAVE_FSETXATTR_6
+#include <sys/xattr.h> /* header from libc, not from libattr */
+int
+main() {
+  fsetxattr(0, 0, 0, 0, 0, 0);
+  return 0;
+}
+#endif
+#ifdef HAVE_FSETXATTR_5
+#include <sys/xattr.h> /* header from libc, not from libattr */
+int
+main() {
+  fsetxattr(0, 0, 0, 0, 0);
+  return 0;
+}
+#endif
diff --git a/CMake/FindCARES.cmake b/CMake/FindCARES.cmake
new file mode 100644
index 000000000..c4ab5f132
--- /dev/null
+++ b/CMake/FindCARES.cmake
@@ -0,0 +1,42 @@
+# - Find c-ares
+# Find the c-ares includes and library
+# This module defines
+#  CARES_INCLUDE_DIR, where to find ares.h, etc.
+#  CARES_LIBRARIES, the libraries needed to use c-ares.
+#  CARES_FOUND, If false, do not try to use c-ares.
+# also defined, but not for general use are
+# CARES_LIBRARY, where to find the c-ares library.
+
+FIND_PATH(CARES_INCLUDE_DIR ares.h
+  /usr/local/include
+  /usr/include
+  )
+
+SET(CARES_NAMES ${CARES_NAMES} cares)
+FIND_LIBRARY(CARES_LIBRARY
+  NAMES ${CARES_NAMES}
+  PATHS /usr/lib /usr/local/lib
+  )
+
+IF (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+  SET(CARES_LIBRARIES ${CARES_LIBRARY})
+  SET(CARES_FOUND "YES")
+ELSE (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+  SET(CARES_FOUND "NO")
+ENDIF (CARES_LIBRARY AND CARES_INCLUDE_DIR)
+
+
+IF (CARES_FOUND)
+  IF (NOT CARES_FIND_QUIETLY)
+    MESSAGE(STATUS "Found c-ares: ${CARES_LIBRARIES}")
+  ENDIF (NOT CARES_FIND_QUIETLY)
+ELSE (CARES_FOUND)
+  IF (CARES_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Could not find c-ares library")
+  ENDIF (CARES_FIND_REQUIRED)
+ENDIF (CARES_FOUND)
+
+MARK_AS_ADVANCED(
+  CARES_LIBRARY
+  CARES_INCLUDE_DIR
+  )
diff --git a/CMake/FindLibSSH2.cmake b/CMake/FindLibSSH2.cmake
new file mode 100644
index 000000000..12a7c612b
--- /dev/null
+++ b/CMake/FindLibSSH2.cmake
@@ -0,0 +1,35 @@
+# - Try to find the libssh2 library
+# Once done this will define
+#
+# LIBSSH2_FOUND - system has the libssh2 library
+# LIBSSH2_INCLUDE_DIR - the libssh2 include directory
+# LIBSSH2_LIBRARY - the libssh2 library name
+
+if (LIBSSH2_INCLUDE_DIR AND LIBSSH2_LIBRARY)
+  set(LibSSH2_FIND_QUIETLY TRUE)
+endif (LIBSSH2_INCLUDE_DIR AND LIBSSH2_LIBRARY)
+
+FIND_PATH(LIBSSH2_INCLUDE_DIR libssh2.h
+)
+
+FIND_LIBRARY(LIBSSH2_LIBRARY NAMES ssh2
+)
+
+if(LIBSSH2_INCLUDE_DIR)
+  file(STRINGS "${LIBSSH2_INCLUDE_DIR}/libssh2.h" libssh2_version_str REGEX "^#define[\t ]+LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9][0-9][0-9][0-9][0-9].*")
+
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_MAJOR "${libssh2_version_str}")
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9]([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_MINOR  "${libssh2_version_str}")
+  string(REGEX REPLACE "^.*LIBSSH2_VERSION_NUM[\t ]+0x[0-9][0-9][0-9][0-9]([0-9][0-9]).*$" "\\1" LIBSSH2_VERSION_PATCH "${libssh2_version_str}")
+
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_MAJOR "${LIBSSH2_VERSION_MAJOR}")
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_MINOR "${LIBSSH2_VERSION_MINOR}")
+  string(REGEX REPLACE "^0(.+)" "\\1" LIBSSH2_VERSION_PATCH "${LIBSSH2_VERSION_PATCH}")
+
+  set(LIBSSH2_VERSION "${LIBSSH2_VERSION_MAJOR}.${LIBSSH2_VERSION_MINOR}.${LIBSSH2_VERSION_PATCH}")
+endif(LIBSSH2_INCLUDE_DIR)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibSSH2 DEFAULT_MSG LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY )
+
+MARK_AS_ADVANCED(LIBSSH2_INCLUDE_DIR LIBSSH2_LIBRARY LIBSSH2_VERSION_MAJOR LIBSSH2_VERSION_MINOR LIBSSH2_VERSION_PATCH LIBSSH2_VERSION)
diff --git a/CMake/FindNGHTTP2.cmake b/CMake/FindNGHTTP2.cmake
new file mode 100644
index 000000000..4e566cf02
--- /dev/null
+++ b/CMake/FindNGHTTP2.cmake
@@ -0,0 +1,18 @@
+include(FindPackageHandleStandardArgs)
+
+find_path(NGHTTP2_INCLUDE_DIR "nghttp2/nghttp2.h")
+
+find_library(NGHTTP2_LIBRARY NAMES nghttp2)
+
+find_package_handle_standard_args(NGHTTP2
+    FOUND_VAR
+      NGHTTP2_FOUND
+    REQUIRED_VARS
+      NGHTTP2_LIBRARY
+      NGHTTP2_INCLUDE_DIR
+    FAIL_MESSAGE
+      "Could NOT find NGHTTP2"
+)
+
+set(NGHTTP2_INCLUDE_DIRS ${NGHTTP2_INCLUDE_DIR} )
+set(NGHTTP2_LIBRARIES ${NGHTTP2_LIBRARY})
diff --git a/CMake/OtherTests.cmake b/CMake/OtherTests.cmake
index d59949871..3b203c538 100644
--- a/CMake/OtherTests.cmake
+++ b/CMake/OtherTests.cmake
@@ -179,17 +179,20 @@ int main(void) {
 
 
 include(CheckCSourceRuns)
-set(CMAKE_REQUIRED_FLAGS)
-if(HAVE_SYS_POLL_H)
-  set(CMAKE_REQUIRED_FLAGS "-DHAVE_SYS_POLL_H")
-endif(HAVE_SYS_POLL_H)
-check_c_source_runs("
-  #ifdef HAVE_SYS_POLL_H
-  #  include <sys/poll.h>
-  #endif
-  int main(void) {
-    return poll((void *)0, 0, 10 /*ms*/);
-  }" HAVE_POLL_FINE)
+# See HAVE_POLL in CMakeLists.txt for why poll is disabled on macOS
+if(NOT APPLE)
+  set(CMAKE_REQUIRED_FLAGS)
+  if(HAVE_SYS_POLL_H)
+    set(CMAKE_REQUIRED_FLAGS "-DHAVE_SYS_POLL_H")
+  endif(HAVE_SYS_POLL_H)
+  check_c_source_runs("
+    #ifdef HAVE_SYS_POLL_H
+    #  include <sys/poll.h>
+    #endif
+    int main(void) {
+      return poll((void *)0, 0, 10 /*ms*/);
+    }" HAVE_POLL_FINE)
+endif()
 
 set(HAVE_SIG_ATOMIC_T 1)
 set(CMAKE_REQUIRED_FLAGS)