Created attachment 196257 [details]
Fix blitz++ build on FreeBSD 11.2

blitz++ currently fails to build on FreeBSD 11.2:

Making all in lib
gmake[2]: Entering directory '/wrkdirs/usr/ports/math/blitz++/work/blitz-0.9/lib'
if /bin/sh ../libtool --mode=compile --tag=CXX c++ -DHAVE_CONFIG_H   -I.. -I..    -MT globals.lo -MD -MP -MF ".deps/globals.Tpo" -c -o globals.lo `test -f '../src/globals.cpp' || echo './'`../src/globals.cpp; \
then mv -f ".deps/globals.Tpo" ".deps/globals.Plo"; else rm -f ".deps/globals.Tpo"; exit 1; fi
mkdir .libs
 c++ -DHAVE_CONFIG_H -I.. -I.. -MT globals.lo -MD -MP -MF .deps/globals.Tpo -c ../src/globals.cpp  -fPIC -DPIC -o .libs/globals.o
In file included from ../src/globals.cpp:11:
In file included from ../blitz/indexexpr.h:30:
In file included from ../blitz/tinyvec.h:30:
../blitz/blitz.h:58:12: fatal error: 'iostream.h' file not found
  #include <iostream.h>
           ^~~~~~~~~~~~
1 error generated.
gmake[2]: *** [Makefile:381: globals.lo] Error 1
gmake[2]: Leaving directory '/wrkdirs/usr/ports/math/blitz++/work/blitz-0.9/lib'
gmake[1]: *** [Makefile:377: all-recursive] Error 1
gmake[1]: Leaving directory '/wrkdirs/usr/ports/math/blitz++/work/blitz-0.9'
*** Error code 1

Stop.
make: stopped in /usr/ports/math/blitz++

It seems that it is the configure script that is too old to work. To fix the problem, I add USES=autoreconf to the port Makefile. However, it seems that running autoreconf triggers the rebuild of documentation because of the existing patches, and I cannot find a way to build documentation without errors. I rename these two patches to prevent them from modifying .texi files when DOCS option is not enabled, so it will at least build successully when DOCS is disabled, which is the default.

Since svn doesn't seem to have a way to handle renamed files in a patch file, some manual steps are needed to apply the patch I uploaded here.

$ svn mv files/patch-doc-arrays-expr.texi files/extra-patch-doc-arrays-expr.texi
$ svn mv files/patch-doc-arrays-expr.texi files/extra-patch-doc-arrays-expr.texi
$ svn patch math_blitz++.patch