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conan install libnet/1.2@ --build=libnet --profile=C:\J\w\BuildSingleReference@4/18913/6d7adcd1-41b0-4625-96e7-bfd665ba4b64/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MT
compiler.version=16
os=Windows
os_build=Windows
[options]
libnet:shared=False
[build_requires]
[env]

libnet/1.2: Forced build from source
Installing package: libnet/1.2
Requirements
    libnet/1.2 from local cache - Cache
Packages
    libnet/1.2:a79a557254fabcb77849dd623fed97c9c5ab7651 - Build

Installing (downloading, building) binaries...
libnet/1.2: Copying sources to build folder
libnet/1.2: Building your package in C:\J\w\BuildSingleReference@4\.conan\data\libnet\1.2\_\_\build\a79a557254fabcb77849dd623fed97c9c5ab7651
libnet/1.2: Generator txt created conanbuildinfo.txt
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
libnet/1.2: Calling build()
libnet/1.2: Calling:
 > source_subfolder/configure --disable-shared --enable-static --prefix=C:/J/w/BuildSingleReference@4/.conan/data/libnet/1.2/_/_/package/a79a557254fabcb77849dd623fed97c9c5ab7651 

----Running------
> source_subfolder/configure --disable-shared --enable-static --prefix=C:/J/w/BuildSingleReference@4/.conan/data/libnet/1.2/_/_/package/a79a557254fabcb77849dd623fed97c9c5ab7651 
-----------------
libnet/1.2: 
libnet/1.2: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference@4\.conan\data\libnet\1.2\_\_\build\a79a557254fabcb77849dd623fed97c9c5ab7651
libnet/1.2: WARN: Error running `configure --help`: Error 1 while executing source_subfolder/configure --help
'source_subfolder' is not recognized as an internal or external command,
operable program or batch file.
libnet/1.2: ERROR: Package 'a79a557254fabcb77849dd623fed97c9c5ab7651' build failed
libnet/1.2: WARN: Build folder C:\J\w\BuildSingleReference@4\.conan\data\libnet\1.2\_\_\build\a79a557254fabcb77849dd623fed97c9c5ab7651
ERROR: libnet/1.2: Error in build() method, line 60
	autotools = self._configure_autotools()
while calling '_configure_autotools', line 55
	self._autotools.configure(configure_dir=self._source_subfolder, args=args)
	ConanException: Error 1 while executing source_subfolder/configure --disable-shared --enable-static --prefix=C:/J/w/BuildSingleReference@4/.conan/data/libnet/1.2/_/_/package/a79a557254fabcb77849dd623fed97c9c5ab7651