[Gnuplot-info] Clang compiler error on Sierra (termios.h)

[Denis D. <dav...@gm...>]

Dear all,

I am building Gnuplot using Spack package manager on macOS and came across this error:

Making all in docs
/Applications/Xcode.app/Contents/Developer/usr/bin/make  all-am
/Users/davydden/spack/lib/spack/env/clang/clang -DHAVE_CONFIG_H -I. -I..  -I../src -I../term -I/Users/davydden/spack/opt/spack/darwin-sierra-x86_64/clang-8.0.0-apple/readline-6.3-lc6wbyj2gqw2nvkmixulzlnxgmvmbbo6/include  -g -O2 -c -o checkdoc.o checkdoc.c
In file included from checkdoc.c:58:
In file included from ./doc2x.h:72:
In file included from /Users/davydden/spack/opt/spack/darwin-sierra-x86_64/clang-8.0.0-apple/ncurses-6.0-f5ft4ie4brbq44gkyjhr7r42xnfjkhgt/include/term.h:86:
In file included from /usr/include/termios.h:27:
/usr/include/sys/termios.h:263:1: error: expected expression
typedef unsigned long   tcflag_t;
^
1 error generated.

The config is minimalistic for now:

  $ ./configure --prefix=/Users/davydden/spack/opt/spack/darwin-sierra-x86_64/clang-8.0.0-apple/gnuplot-5.0.5-duvihibefbdov3sf33n5w55wrwxf6dax --disable-dependency-tracking --disable-silent-rules --with-readline=/Users/davydden/spack/opt/spack/darwin-sierra-x86_64/clang-8.0.0-apple/readline-6.3-lc6wbyj2gqw2nvkmixulzlnxgmvmbbo6 --without-tutorial --without-bitmap-terminals --without-x --disable-wxwidgets --without-gd --without-cairo --without-pdf --with-qt=no --without-lua --without-latex --without-aquaterm

I would appreciate any suggestion on how to make it work.

p.s. XCode 8.2.1 and Clang8.0.0

p.p.s. I have a feeling that I came across a similar problem in the past and it was related to some issues in Apple’s system headers.

Regards,
Denis