On 7 August 2017 at 17:21, Reuben Thomas <r...@sc3d.org> wrote: > On 7 August 2017 at 17:16, Reuben Thomas <r...@sc3d.org> wrote: > >> On 7 August 2017 at 17:11, Reuben Thomas <r...@sc3d.org> wrote: >> >>> On 7 August 2017 at 16:42, Bruno Haible <br...@clisp.org> wrote: >>> >>>> >>>> > Currently in my configure.ac, I have: >>>> > >>>> > AC_LANG_PUSH([C++]) >>>> > gl_MANYWARN_ALL_GCC([cxx_warnings]) >>>> > >>>> > dnl Enable all G++ warnings not in this list. >>>> > gl_MANYWARN_COMPLEMENT([cxx_warnings], [$cxx_warnings], [$nw]) >>>> > for w in $cxx_warnings; do >>>> > gl_WARN_ADD([$w]) >>>> > done >>>> > AC_LANG_POP >>>> > >>>> > which seems to work. >>>> >>>> Yes, this is how the multi-language facilities are supposed to be used. >>>> >>> >>> OK, now that some of the code is in a new file, I get: >>> >>> configure.ac:90: error: gl_MANYWARN_ALL_GCC: unknown language: C++ >>> m4/manywarnings.m4:38: gl_MANYWARN_ALL_GCC is expanded from... >>> configure.ac:90: the top level >>> >>> Line 90 is the call of gl_MANYWARN_ALL_GCC in the code extract above. >>> >> >> manywarnings-c++.m4 is not referenced in aclocal.m4, though it has been >> symlinked into the project's m4 directory by bootstrap. >> > > Is this because aclocal finds gl_MANYWARN_ALL_GCC defined in > manywarnings.m4, so doesn't bother looking in manywarnings-c++.m4 > . >
So as a workaround, I tried replacing the line gl_MANYWARN_ALL_GCC([cxx_warnings]) by m4_indir([gl_MANYWARN_ALL_GCC(C++)], [cxx_warnings]) but now I get a straightforward error from aclocal: /usr/bin/m4:configure.ac:90: undefined macro `gl_MANYWARN_ALL_GCC(C++)' I guess because aclocal doesn't scan for macros called via m4_indir?? -- https://rrt.sc3d.org <http://rrt.sc3d.org>
