Le 2024-06-09 à 17 h 34, Fons Adriaensen a écrit :

On Sun, Jun 09, 2024 at 11:55:41AM -0400, Marc Lavallée wrote:
 

For the specific error you reported, the required macro is
ax_cxx_compile_stdcxx.m4.

Thanks for the clear info.

Requiring C++11 seems like nothing really esoteric, so why
doesn't a standard autotools installation have this macro ?

The other required macro is ax_check_compile_flag.m4

Except the macros are not required... Here's how to avoid them:

Add this line at beginning of Makefile.am :

AM_CXXFLAGS = -std=c++11 -Wall

In configure.ac, delete sections titled:

# need c++11 mode

# use -Wall

The software can then be configured without autoconf-archive.

And if it isn't standard, shouldn't it be provided in the m4
dir of the project (there are some others there) ?

The m4 directory is generated by autoconf.

Marc

Ciao,