error: C++ preprocessor "/lib/cpp" fails sanity check
 

I use debian and i try to install fluxbox 0.9.9. When i type ./configure, after few seconds i can see only this:

checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking for a BSD-compatible install... /usr/bin/install -c
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for ld used by GCC... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for /usr/bin/ld option to reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking for a sed that does not truncate output... /bin/sed
checking whether ln -s works... yes
checking how to recognise dependent libraries... pass_all
checking command to parse /usr/bin/nm -B output... ok
checking how to run the C++ preprocessor... /lib/cpp
configure: error: C++ preprocessor "/lib/cpp" fails sanity check
See `config.log' for more details.

I searched the internet and saw many forums whith this problem, but i can't check it.
What can i do?

Thanks for some help!!!

RE: error: C++ preprocessor "/lib/cpp" fails sanity check
 

I had the same issue. I did an
apt-get install g++
and it fixed the problem but now I run into "XOpenDisplay not found"

I hope that helps.

Hi,

Please install rpm gcc-c++

Thanks
Raj.

If you use ubuntu, run $sudo aptitude, find g++ in the noninstalled packages list, install g++, g++ 3.x and 4.x, that fixed my installation.

On CentOS and Red Hat this fixed the issue
 

Hi there, I had the same problem on CentOs,

code:

yum install gcc-c++

And everything was OK after that .