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@@ -1,4 +1,4 @@
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-cmake_minimum_required(VERSION 3.21)
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+cmake_minimum_required(VERSION 3.13)
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project(libdatachannel
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VERSION 0.23.0
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LANGUAGES CXX)
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@@ -27,6 +27,12 @@ option(CAPI_STDCALL "Set calling convention of C API callbacks stdcall" OFF)
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option(SCTP_DEBUG "Enable SCTP debugging output to verbose log" OFF)
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option(RTC_UPDATE_VERSION_HEADER "Enable updating the version header" OFF)
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+if(NOT NO_MEDIA AND NOT PREFER_SYSTEM_LIB)
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+ if(CMAKE_VERSION VERSION_LESS 3.21)
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+ message(FATAL_ERROR "CMake >= v3.21 is required to build libdatachannel with media support (with submodules).")
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+ endif()
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+endif()
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+
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if (USE_GNUTLS AND USE_MBEDTLS)
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message(FATAL_ERROR "Both USE_MBEDTLS and USE_GNUTLS cannot be enabled at the same time")
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endif()
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Murat Dogan