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conan install openh264/2.1.1@ --profile=C:\J\w\BuildSingleReference@6/929/c0844531-c19b-492f-82b6-cd8832f6f29f/profile.txt --build=openh264
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=Visual Studio
compiler.runtime=MTd
compiler.version=16
os=Windows
os_build=Windows
[options]
openh264:shared=False
[build_requires]
[env]

openh264/2.1.1: Forced build from source
Installing package: openh264/2.1.1
Requirements
    openh264/2.1.1 from local cache - Cache
Packages
    openh264/2.1.1:b2b69efcc79a149e0bc765fb12ba0278d52fc260 - Build
Build requirements
    msys2/20200517 from 'conan-center' - Cache
    nasm/2.14 from 'conan-center' - Cache
Build requirements packages
    msys2/20200517:3cbd862cb7a3ea47ed1220dc027f344262d5224f - Cache
    nasm/2.14:456f15897172eef340fcbac8a70811f2beb26a93 - Cache

Installing (downloading, building) binaries...
msys2/20200517: Already installed!
msys2/20200517: Creating MSYS_ROOT env var : C:\J\w\BuildSingleReference@6/s\f24fcd\1\bin
msys2/20200517: Creating MSYS_BIN env var : C:\J\w\BuildSingleReference@6/s\f24fcd\1\bin\usr\bin
msys2/20200517: Appending PATH env var with : C:\J\w\BuildSingleReference@6/s\f24fcd\1\bin\usr\bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
nasm/2.14: Already installed!
nasm/2.14: Appending PATH environment variable: C:\J\w\BuildSingleReference@6\.conan\data\nasm\2.14\_\_\package\456f15897172eef340fcbac8a70811f2beb26a93\bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
openh264/2.1.1: Applying build-requirement: nasm/2.14
openh264/2.1.1: Applying build-requirement: msys2/20200517
openh264/2.1.1: Copying sources to build folder
openh264/2.1.1: Building your package in C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260
openh264/2.1.1: 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
openh264/2.1.1: Calling build()
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** Visual Studio 2019 Developer Command Prompt v16.8.1
** Copyright (c) 2020 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x64'

----Running------
> make openh264.lib ARCH=x86_64 PREFIX=/c/j/w/buildsinglereference@6/.conan/data/openh264/2.1.1/_/_/package/b2b69efcc79a149e0bc765fb12ba0278d52fc260 CPPFLAGS= "CXXFLAGS=-Zi -Ob0 -Od -MTd -nologo -MTd" "CFLAGS=-Zi -Ob0 -Od -MTd -nologo -MTd" LDFLAGS=-link LIBS= OS=msvc -j16
-----------------
cl -Zi -Ob0 -Od -MTd -nologo -MTd -Zi -Ob0 -Od -MTd -nologo -MTd -I./codec/api/svc -I./codec/common/inc -Icodec/common/inc  -I./codec/encoder/core/inc -I./codec/encoder/plus/inc -I./codec/processing/interface -c -Focodec/encoder/core/src/au_set.obj codec/encoder/core/src/au_set.cpp
cl -Zi -Ob0 -Od -MTd -nologo -MTd -Zi -Ob0 -Od -MTd -nologo -MTd -I./codec/api/svc -I./codec/common/inc -Icodec/common/inc  -I./codec/encoder/core/inc -I./codec/encoder/plus/inc -I./codec/processing/interface -c -Focodec/encoder/core/src/deblocking.obj codec/encoder/core/src/deblocking.cpp
au_set.cpp
cl -Zi -Ob0 -Od -MTd -nologo -MTd -Zi -Ob0 -Od -MTd -nologo -MTd -I./codec/api/svc -I./codec/common/inc -Icodec/common/inc  -I./codec/encoder/core/inc -I./codec/encoder/plus/inc -I./codec/processing/interface -c -Focodec/encoder/core/src/decode_mb_aux.obj codec/encoder/core/src/decode_mb_aux.cpp
deblocking.cpp
codec/encoder/core/src/deblocking.cpp: fatal error C1041: cannot open program database 'C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260\source_subfolder\vc140.pdb'; if multiple CL.EXE write to the same .PDB file, please use /FS
cl -Zi -Ob0 -Od -MTd -nologo -MTd -Zi -Ob0 -Od -MTd -nologo -MTd -I./codec/api/svc -I./codec/common/inc -Icodec/common/inc  -I./codec/encoder/core/inc -I./codec/encoder/plus/inc -I./codec/processing/interface -c -Focodec/encoder/core/src/encode_mb_aux.obj codec/encoder/core/src/encode_mb_aux.cpp
decode_mb_aux.cpp
codec/encoder/core/src/decode_mb_aux.cpp: fatal error C1041: cannot open program database 'C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260\source_subfolder\vc140.pdb'; if multiple CL.EXE write to the same .PDB file, please use /FS
encode_mb_aux.cpp
codec/encoder/core/src/encode_mb_aux.cpp: fatal error C1041: cannot open program database 'C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260\source_subfolder\vc140.pdb'; if multiple CL.EXE write to the same .PDB file, please use /FS
openh264/2.1.1: 
openh264/2.1.1: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260
make: *** [codec/encoder/targets.mk:109: codec/encoder/core/src/deblocking.obj] Error 2
make: *** Waiting for unfinished jobs....
make: *** [codec/encoder/targets.mk:109: codec/encoder/core/src/decode_mb_aux.obj] Error 2
make: *** [codec/encoder/targets.mk:109: codec/encoder/core/src/encode_mb_aux.obj] Error 2
openh264/2.1.1: ERROR: Package 'b2b69efcc79a149e0bc765fb12ba0278d52fc260' build failed
openh264/2.1.1: WARN: Build folder C:\J\w\BuildSingleReference@6\.conan\data\openh264\2.1.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260
ERROR: openh264/2.1.1: Error in build() method, line 145
	env_build.make(args=self._make_args, target=self._library_filename)
	ConanException: Error 2 while executing make openh264.lib ARCH=x86_64 PREFIX=/c/j/w/buildsinglereference@6/.conan/data/openh264/2.1.1/_/_/package/b2b69efcc79a149e0bc765fb12ba0278d52fc260 CPPFLAGS= "CXXFLAGS=-Zi -Ob0 -Od -MTd -nologo -MTd" "CFLAGS=-Zi -Ob0 -Od -MTd -nologo -MTd" LDFLAGS=-link LIBS= OS=msvc -j16