Hi, I had this problem. The solution is to turn off AVG anti-virus. In the past, I could both compile PostgreSQL and keep 'AVG on' at the same time. The case * does not seem that way anymore *
With AVG 'antivirus on' the following occurs. AnonymousUser@ANONYMOUST MSYS /w/R-3.5._/postgres/build $ /w/R-3.5._/postgres/configure --host=x86_64-w64-mingw32 --prefix=$PWD --enable-debug --disable-rpath --enable-depend --without-zlib $ make Detect problem ... popup window ... Detect problem ... popup window ... Protected you ... create exception ... 'make' then dies on the same errors mentioned above Then I turn off the internet (for my protection) Next, I turn off AVG anti-virus. I do . . . AnonymousUser@ANONYMOUST MSYS /w/R-3.5._/postgres/build $ rm -f -r * AnonymousUser@ANONYMOUST MSYS /w/R-3.5._/postgres/build $ /w/R-3.5._/postgres/configure --host=x86_64-w64-mingw32 --prefix=$PWD --enable-debug --disable-rpath --enable-depend --without-zlib $ make All of PostgreSQL successfully made. Ready to install. AnonymousUser@ANONYMOUST MINGW64 /w/R-3.5._/postgres/build $ make install ref Issues while building PG in MS Windows, using MSYS2 and MinGW-w64 https://www.postgresql-archive.org/Issues-while-building-PG-in-MS-Windows-using-MSYS2-and-MinGW-w64-td6018897.html -- Sent from: http://www.postgresql-archive.org/PostgreSQL-hackers-f1928748.html