> Date: Wed, 24 Jun 2020 19:27:21 +0300 > From: Eli Zaretskii <e...@gnu.org> > Cc: bug-make@gnu.org > > > NMAKE : fatal error U1065: invalid option '-' > > Stop. > > Does this happen even if you remove the "cd libf2c" part? That is, > are you saying that any invocation of NMake from a MinGW-built GNU > Make causes this problem? > > > Rewriting to: > > > > SHELL = cmd.exe: > > gnss_libf2c.lib: > > cd libf2c & nmake.exe -nologo -f Makefile.VC all > > cp libf2c/vcfc2.lib $@ > > > > gives the same error. > > What happens if you use redirection, or in some other way force GNU > Make to invoke NMake via a batch file?
And one more idea: did you try to use '/' as the NMake option character instead of '-' ?