$ cat builddir/meson-logs/meson-log.txt
Build started at 2018-04-16T06:40:56.382639
Main binary: /usr/bin/python3
Python system: MINGW32_NT-10.0
The Meson build system
Version: 0.46.0.dev1
Source dir: /c/Users/User/source/openh264
Build dir: /c/Users/User/source/openh264/builddir
Build type: native build
Project name: openh264
Sanity testing C compiler: cc
Is cross compiler: False.
Sanity check compiler command line: cc /c/Users/User/source/openh264/builddir/meson-private/sanitycheckc.c -o /c/Users/User/source/openh264/builddir/meson-private/sanitycheckc.exe
Sanity check compile stdout:

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Sanity check compile stderr:

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Running test binary command: /c/Users/User/source/openh264/builddir/meson-private/sanitycheckc.exe
Native C compiler: cc (gcc 7.2.0 "cc.exe (Rev1, Built by MSYS2 project) 7.2.0")
Sanity testing C++ compiler: c++
Is cross compiler: False.
Sanity check compiler command line: c++ /c/Users/User/source/openh264/builddir/meson-private/sanitycheckcpp.cc -o /c/Users/User/source/openh264/builddir/meson-private/sanitycheckcpp.exe
Sanity check compile stdout:

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Sanity check compile stderr:

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Running test binary command: /c/Users/User/source/openh264/builddir/meson-private/sanitycheckcpp.exe
Native C++ compiler: c++ (gcc 7.2.0 "c++.exe (Rev1, Built by MSYS2 project) 7.2.0")
Build machine cpu family: x86
Build machine cpu: x86
'utf-8' codec can't decode byte 0x90 in position 2: invalid start byte
Unusable script '/mingw32/bin/nasm'
Program nasm found: NO
Program nasm.exe found: YES (/mingw32/bin/nasm.exe)
Dependency threads found: YES
Running compile:
Working directory:  /tmp/tmpc_n99etr
Command line:  c++ /tmp/tmpc_n99etr/testfile.cpp -O0 -fpermissive -Wl,--start-group -lgtest -Wl,--end-group -pipe -o /tmp/tmpc_n99etr/output.exe

Code:
 int main(int argc, char **argv) { return 0; }
Compiler stdout:

Compiler stderr:
 C:/msys64/mingw32/bin/../lib/gcc/i686-w64-mingw32/7.2.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lgtest
collect2.exe: error: ld returned 1 exit status

Running compile:
Working directory:  /tmp/tmpsiibt4jd
Command line:  c++ /tmp/tmpsiibt4jd/testfile.cpp -O0 -fpermissive -Wl,--start-group -lgtest_main -Wl,--end-group -pipe -o /tmp/tmpsiibt4jd/output.exe

Code:
 int main(int argc, char **argv) { return 0; }
Compiler stdout:

Compiler stderr:
 C:/msys64/mingw32/bin/../lib/gcc/i686-w64-mingw32/7.2.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lgtest_main
collect2.exe: error: ld returned 1 exit status

Dependency GTest found: NO
Using gtest from cache.
Using gtest-1.8.0-4-wrap.zip from cache.

Executing subproject gtest.

Project name: gtest
Native C++ compiler: c++ (gcc 7.2.0 "c++.exe (Rev1, Built by MSYS2 project) 7.2.0")
Dependency threads found: YES (cached)
Dependency threads found: YES (cached)
Dependency threads found: YES (cached)
Dependency threads found: YES (cached)
Build targets in project: 7

Subproject gtest finished.
Dependency gtest from subproject subprojects/gtest found: YES
Dependency gtest from subproject subprojects/gtest found: YES (cached)
Adding test "api".
Adding test "common".
Adding test "decoder".
Adding test "encoder".
Adding test "processing".
Configuring openh264.pc using configuration
Configuring openh264-static.pc using configuration
Build targets in project: 15
Found ninja-1.8.2 at /mingw32/bin/ninja