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CMake: warn if the user did not set a build type #8162

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4 changes: 2 additions & 2 deletions CMakeLists.txt
Original file line number Diff line number Diff line change
Expand Up @@ -23,8 +23,8 @@ option(BUILD_SHARED_LIBS "Build shared libraries" ON)

# Warn if the user did not set a build type and is using a single-configuration generator.
get_property(IS_MULTI_CONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if (NOT IS_MULTI_CONFIG AND NOT DEFINED CMAKE_BUILD_TYPE)
message(WARNING "Single-configuration generators require CMAKE_BUILD_TYPE to be set.")
if (NOT IS_MULTI_CONFIG AND NOT CMAKE_BUILD_TYPE)
message(SEND_ERROR "Single-configuration generators require CMAKE_BUILD_TYPE to be set.")
endif ()

# Windows has file name length restrictions and lacks an RPATH mechanism.
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