curl: Configure build to work within CMake

Set curl build options as needed for CMake rather than presenting them
to the user in the cache.  Drop the CMAKE_BUILD_CURL_SHARED option for
now.

Change the curl library name to 'cmcurl'.  Disable blocks of code within
curl CMakeLists.txt files that we do not need for CMake, but leave the
code in place to make merging with curl updates easier.

CMakeLists.txt

@@ -271,10 +271,7 @@ macro (CMAKE_BUILD_UTILITIES)
     set(CURL_SPECIAL_ZLIB_H ${CMAKE_ZLIB_HEADER})
     set(CURL_SPECIAL_LIBZ_INCLUDES ${CMAKE_ZLIB_INCLUDES})
     set(CURL_SPECIAL_LIBZ ${CMAKE_ZLIB_LIBRARIES})
-    option(CMAKE_BUILD_CURL_SHARED "Should curl be built shared" FALSE)
-    if(NOT CMAKE_BUILD_CURL_SHARED)
     add_definitions(-DCURL_STATICLIB)
-    endif()
     set(CMAKE_CURL_INCLUDES)
     set(CMAKE_CURL_LIBRARIES cmcurl)
     if(CMAKE_TESTS_CDASH_SERVER)

Utilities/cmcurl/CMakeLists.txt

@@ -1,3 +1,35 @@
+# Set curl options as needed for CMake build
+set(BUILD_CURL_EXE OFF CACHE INTERNAL "No curl exe")
+set(BUILD_CURL_TESTS OFF CACHE INTERNAL "No curl tests")
+set(BUILD_DASHBOARD_REPORTS OFF CACHE INTERNAL "No curl dashboard reports")
+set(BUILD_RELEASE_DEBUG_DIRS OFF CACHE INTERNAL "No curl release/debug dirs")
+set(CMAKE_USE_LIBSSH2 OFF CACHE INTERNAL "Disable curl libssh2")
+set(CMAKE_USE_OPENLDAP OFF CACHE INTERNAL "No curl OpenLDAP")
+set(CURL_DISABLE_COOKIES OFF CACHE INTERNAL "Do not disable curl cookie support")
+set(CURL_DISABLE_CRYPTO_AUTH OFF CACHE INTERNAL "Do not disable curl crypto auth")
+set(CURL_DISABLE_DICT ON CACHE INTERNAL "Disable curl dict protocol?")
+set(CURL_DISABLE_FILE OFF CACHE INTERNAL "Disable curl file protocol?")
+set(CURL_DISABLE_FTP OFF CACHE INTERNAL "Disable curl ftp protocol?")
+set(CURL_DISABLE_GOPHER ON CACHE INTERNAL "Disable curl gopher protocol?")
+set(CURL_DISABLE_HTTP OFF CACHE INTERNAL "Disable curl http protocol?")
+set(CURL_DISABLE_IMAP ON CACHE INTERNAL "Disable curl imap protocol?")
+set(CURL_DISABLE_LDAP ON CACHE INTERNAL "Disable curl ldap protocol?")
+set(CURL_DISABLE_LDAPS ON CACHE INTERNAL "Disable curl ldaps protocol?")
+set(CURL_DISABLE_POP3 ON CACHE INTERNAL "Disable curl pop3 protocol?")
+set(CURL_DISABLE_RTSP ON CACHE INTERNAL "Disable curl rtsp protocol?")
+set(CURL_DISABLE_SMTP ON CACHE INTERNAL "Disable curl smtp protocol?")
+set(CURL_DISABLE_TELNET ON CACHE INTERNAL "Disable curl telnet protocol?")
+set(CURL_DISABLE_TFTP ON CACHE INTERNAL "Disable curl tftp protocol?")
+set(CURL_DISABLE_VERBOSE_STRING OFF CACHE INTERNAL "Do not disable curl verbosity")
+set(CURL_HIDDEN_SYMBOLS OFF CACHE INTERNAL "No curl hidden symbols")
+set(CURL_LDAP_WIN OFF CACHE INTERNAL "No curl Windows LDAP")
+set(CURL_STATICLIB ON CACHE INTERNAL "Static curl")
+set(CURL_USE_ARES OFF CACHE INTERNAL "No curl c-ares support")
+set(CURL_ZLIB ON CACHE INTERNAL "Enable curl zlib")
+set(DISABLED_THREADSAFE OFF CACHE INTERNAL "Curl can use thread-safe functions")
+set(ENABLE_IPV6 OFF CACHE INTERNAL "Curl IPv6 support")
+set(HTTP_ONLY OFF CACHE INTERNAL "Curl is not http-only")
+
 #***************************************************************************
 #                                  _   _ ____  _
 #  Project                     ___| | | |  _ \| |
@@ -45,7 +77,9 @@ include(Macros)
 
 project( CURL C )
 
+if(0) # This code not needed for building within CMake.
 message(WARNING "the curl cmake build system is poorly maintained. Be aware")
+endif()
 
 file (READ ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS)
 string (REGEX MATCH "LIBCURL_VERSION_MAJOR[ \t]+([0-9]+)"
@@ -69,7 +103,9 @@ include_regular_expression("^.*$")    # Sukender: Is it necessary?
 # Setup package meta-data
 # SET(PACKAGE "curl")
 set(CURL_VERSION ${CURL_MAJOR_VERSION}.${CURL_MINOR_VERSION}.${CURL_PATCH_VERSION})
+if(0) # This code not needed for building within CMake.
 message(STATUS "curl version=[${CURL_VERSION}]")
+endif()
 # SET(PACKAGE_TARNAME "curl")
 # SET(PACKAGE_NAME "curl")
 # SET(PACKAGE_VERSION "-")
@@ -361,7 +397,7 @@ if(CURL_ZLIB)
   endif()
 endif()
 
-option(CMAKE_USE_OPENSSL "Use OpenSSL code. Experimental" ON)
+option(CMAKE_USE_OPENSSL "Use OpenSSL code. Experimental" OFF)
 mark_as_advanced(CMAKE_USE_OPENSSL)
 
 set(USE_SSLEAY OFF)
@@ -872,6 +908,7 @@ if(BUILD_CURL_TESTS)
   add_subdirectory(tests)
 endif()
 
+if(0) # This code not needed for building within CMake.
 # This needs to be run very last so other parts of the scripts can take advantage of this.
 if(NOT CURL_CONFIG_HAS_BEEN_RUN_BEFORE)
   set(CURL_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether this is the first time running CMake or if CMake has been configured before")
@@ -896,3 +933,4 @@ if(MSVC_VERSION EQUAL 1600)
     file(APPEND "${CURL_SLN_FILENAME}" "\n# This should be regenerated!\n")
   endif()
 endif()
+endif()

Utilities/cmcurl/lib/CMakeLists.txt

@@ -1,4 +1,4 @@
-set(LIB_NAME libcurl)
+set(LIB_NAME cmcurl)
 
 configure_file(${CURL_SOURCE_DIR}/include/curl/curlbuild.h.cmake
   ${CURL_BINARY_DIR}/include/curl/curlbuild.h)
@@ -96,14 +96,17 @@ add_library(
 
 target_link_libraries(${LIB_NAME} ${CURL_LIBS})
 
+if(0) # This code not needed for building within CMake.
 if(WIN32)
   add_definitions( -D_USRDLL )
 endif()
+endif()
 
 set_target_properties(${LIB_NAME} PROPERTIES COMPILE_DEFINITIONS BUILDING_LIBCURL)
 
 setup_curl_dependencies(${LIB_NAME})
 
+if(0) # This code not needed for building within CMake.
 # Remove the "lib" prefix since the library is already named "libcurl".
 set_target_properties(${LIB_NAME} PROPERTIES PREFIX "")
 set_target_properties(${LIB_NAME} PROPERTIES IMPORT_PREFIX "")
@@ -116,3 +119,4 @@ if(WIN32)
 endif()
 
 install(TARGETS ${LIB_NAME} DESTINATION lib)
+endif()