include(SanitizeBool) # We try to find any packages our backends might use find_package(OpenSSL) find_package(mbedTLS) if(CMAKE_SYSTEM_NAME MATCHES "Darwin") find_package(Security) find_package(CoreFoundation) endif() if(USE_HTTPS) # Auto-select TLS backend sanitizebool(USE_HTTPS) if(USE_HTTPS STREQUAL ON) if(SECURITY_FOUND) if(SECURITY_HAS_SSLCREATECONTEXT) set(USE_HTTPS "SecureTransport") else() message(STATUS "Security framework is too old, falling back to OpenSSL") set(USE_HTTPS "OpenSSL") endif() elseif(USE_WINHTTP) set(USE_HTTPS "WinHTTP") elseif(OPENSSL_FOUND) set(USE_HTTPS "OpenSSL") elseif(MBEDTLS_FOUND) set(USE_HTTPS "mbedTLS") else() message(FATAL_ERROR "Unable to autodetect a usable HTTPS backend." "Please pass the backend name explicitly (-DUSE_HTTPS=backend)") endif() endif() # Check that we can find what's required for the selected backend if(USE_HTTPS STREQUAL "SecureTransport") if(NOT COREFOUNDATION_FOUND) message(FATAL_ERROR "Cannot use SecureTransport backend, CoreFoundation.framework not found") endif() if(NOT SECURITY_FOUND) message(FATAL_ERROR "Cannot use SecureTransport backend, Security.framework not found") endif() if(NOT SECURITY_HAS_SSLCREATECONTEXT) message(FATAL_ERROR "Cannot use SecureTransport backend, SSLCreateContext not supported") endif() set(GIT_SECURE_TRANSPORT 1) list(APPEND LIBGIT2_SYSTEM_INCLUDES ${SECURITY_INCLUDE_DIR}) list(APPEND LIBGIT2_SYSTEM_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS}) list(APPEND LIBGIT2_PC_LIBS ${COREFOUNDATION_LDFLAGS} ${SECURITY_LDFLAGS}) elseif(USE_HTTPS STREQUAL "OpenSSL") if(NOT OPENSSL_FOUND) message(FATAL_ERROR "Asked for OpenSSL TLS backend, but it wasn't found") endif() set(GIT_OPENSSL 1) list(APPEND LIBGIT2_SYSTEM_INCLUDES ${OPENSSL_INCLUDE_DIR}) list(APPEND LIBGIT2_SYSTEM_LIBS ${OPENSSL_LIBRARIES}) list(APPEND LIBGIT2_PC_LIBS ${OPENSSL_LDFLAGS}) list(APPEND LIBGIT2_PC_REQUIRES "openssl") elseif(USE_HTTPS STREQUAL "mbedTLS") if(NOT MBEDTLS_FOUND) message(FATAL_ERROR "Asked for mbedTLS backend, but it wasn't found") endif() if(NOT CERT_LOCATION) message(STATUS "Auto-detecting default certificates location") if(CMAKE_SYSTEM_NAME MATCHES Darwin) # Check for an Homebrew installation set(OPENSSL_CMD "/usr/local/opt/openssl/bin/openssl") else() set(OPENSSL_CMD "openssl") endif() execute_process(COMMAND ${OPENSSL_CMD} version -d OUTPUT_VARIABLE OPENSSL_DIR OUTPUT_STRIP_TRAILING_WHITESPACE) if(OPENSSL_DIR) string(REGEX REPLACE "^OPENSSLDIR: \"(.*)\"$" "\\1/" OPENSSL_DIR ${OPENSSL_DIR}) set(OPENSSL_CA_LOCATIONS "ca-bundle.pem" # OpenSUSE Leap 42.1 "cert.pem" # Ubuntu 14.04, FreeBSD "certs/ca-certificates.crt" # Ubuntu 16.04 "certs/ca.pem" # Debian 7 ) foreach(SUFFIX IN LISTS OPENSSL_CA_LOCATIONS) set(LOC "${OPENSSL_DIR}${SUFFIX}") if(NOT CERT_LOCATION AND EXISTS "${OPENSSL_DIR}${SUFFIX}") set(CERT_LOCATION ${LOC}) endif() endforeach() else() message(FATAL_ERROR "Unable to find OpenSSL executable. Please provide default certificate location via CERT_LOCATION") endif() endif() if(CERT_LOCATION) if(NOT EXISTS ${CERT_LOCATION}) message(FATAL_ERROR "Cannot use CERT_LOCATION=${CERT_LOCATION} as it doesn't exist") endif() add_feature_info(CERT_LOCATION ON "using certificates from ${CERT_LOCATION}") add_definitions(-DGIT_DEFAULT_CERT_LOCATION="${CERT_LOCATION}") endif() set(GIT_MBEDTLS 1) list(APPEND LIBGIT2_SYSTEM_INCLUDES ${MBEDTLS_INCLUDE_DIR}) list(APPEND LIBGIT2_SYSTEM_LIBS ${MBEDTLS_LIBRARIES}) # mbedTLS has no pkgconfig file, hence we can't require it # https://github.com/ARMmbed/mbedtls/issues/228 # For now, pass its link flags as our own list(APPEND LIBGIT2_PC_LIBS ${MBEDTLS_LIBRARIES}) elseif(USE_HTTPS STREQUAL "WinHTTP") # WinHTTP setup was handled in the WinHTTP-specific block above elseif(USE_HTTPS STREQUAL "OpenSSL-Dynamic") set(GIT_OPENSSL 1) set(GIT_OPENSSL_DYNAMIC 1) list(APPEND LIBGIT2_SYSTEM_LIBS dl) else() message(FATAL_ERROR "Asked for backend ${USE_HTTPS} but it wasn't found") endif() set(GIT_HTTPS 1) add_feature_info(HTTPS GIT_HTTPS "using ${USE_HTTPS}") else() set(GIT_HTTPS 0) add_feature_info(HTTPS NO "") endif()