********************************************************************************
conan install isl/0.23@#a43f8dad401170cb3b2022ab7bbddd92 --build=isl -pr /home/conan/w/prod/BuildSingleReference/176193/2d4b185c-7e0c-4bd5-9e93-7d6a41f574be/profile_linux_5_libstdcpp11_gcc_debug_64.isl-shared-False.txt -c tools.system.package_manager:mode=install -c tools.system.package_manager:sudo=True
********************************************************************************
isl/0.23: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior
isl/0.23: ERROR: Package 'b783a41ac3624871551eab9eaa0d9f348e20a0b4' build failed
isl/0.23: WARN: Build folder /home/conan/w/prod/BuildSingleReference/.conan/data/isl/0.23/_/_/build/b783a41ac3624871551eab9eaa0d9f348e20a0b4/build-debug
ERROR: isl/0.23: Error in build() method, line 119
	autotools.configure(args=[f'CFLAGS_FOR_BUILD=-{msvc_runtime_flag(self)}' if is_msvc(self) else None])
	AttributeError: 'NoneType' object has no attribute 'replace'