./configure dependencies

[<pl...@pi...>]

Hi,

I'm trying to configure a CVS build on 64bit Fed22 but I'm finding some 
inconsistencies:

wxt terminal: no (requires C++, wxWidgets>2.6, cairo>0.9, pango>1.10)
   Qt terminal: no (use --with-qt or --with-qt=qt4 to enable

in order find out exactly what is missing I look further up and see:


checking whether c++ accepts -g... no
checking dependency style of c++... none
configure: WARNING: No C++ compiler found. The wxWidgets terminal will 
not be compiled.
checking for wx-config... /bin/wx-config
checking for CAIROPANGO... yes
checking for PANGO_1_10_2... no
checking for CAIROPDF... yes
checking for CAIROEPS... yes
configure: WARNING: No C++ compiler found. The Qt terminal will not be 
compiled.
checking for QT... yes


Pango detections seems broken since :

dnf install pango
Package pango-1.36.8-6.fc22.x86_64 is already installed, skipping.







Also C++ compiler is installed and stdc++ and its source are present:
Package libstdc++-5.1.1-4.fc22.x86_64 is already installed, skipping.
Package libstdc++-devel-5.1.1-4.fc22.x86_64 is already installed, 
skipping.

# which cpp
/bin/cpp
[root@localhost gnuplot]# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/5.1.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap 
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr 
--mandir=/usr/share/man --infodir=/usr/share/info 
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared 
--enable-threads=posix --enable-checking=release --enable-multilib 
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions 
--enable-gnu-unique-object --enable-linker-build-id 
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array 
--disable-libgcj --with-default-libstdcxx-abi=c++98 --with-isl 
--enable-libmpx --enable-gnu-indirect-function --with-tune=generic 
--with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)


Why is it not detecting c++ and getting the wrong idea about pango 
versions?

TIA, Peter.