Asy 2.38 compilation error on Fedora 24

[jamestus]

I am getting a compilation error on Fedora 24 trying to compile 2.38. The error seems to be related to C++ compiler flag -ansi, which I can not override with CXXFLAGS. Irrelevant lines have been removed from below.

[jarmo@localhost asymptote]$ ./configure --prefix=${HOME} CXXFLAGS="-std=c++11"
[jarmo@localhost asymptote]$ make
g++ -Wall -DHAVE_CONFIG_H -D_FILE_OFFSET_BITS=64 -DUSEGC  -pthread -DFFTWPP_SINGLE_THREAD  -std=c++11 -g -O3 -ansi -fno-var-tracking   -I. -Igc-7.4.2/include -o camperror.o -c camperror.cc
In file included from /usr/include/c++/6.1.1/unordered_map:35:0,
                 from memory.h:22,
                 from common.h:35,
                 from camperror.h:16,
                 from camperror.cc:14:
/usr/include/c++/6.1.1/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.

[John Bowman]

Yes this is in my local TODO list. For now try using CFLAGS instead of CXXFLAGS.