Asterisk 13.20.0 Centos 7 Server x86_64

[root@c-13-20-0-asterisk scripts]# ./install_prereq test
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test: test mode.

Use the commands here to install your system.

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yum install --skip-broken --assumeyes speexdsp-devel mysql-devel libresample-devel hoard

yum install --skip-broken --assumeyes speexdsp-devel mysql-devel libresample-devel hoard

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

Files are missing trying a workaround

Results for Hoard installation:

[root@c-13-20-0-asterisk src]# make
clang++ -std=c++14 -O3 -ffast-math -fno-builtin-malloc -Wall -Wextra -Wshadow -Wconversion -Wuninitialized -g -W -Wconversion -Wall -I/usr/include/np
tl -fno-builtin-malloc -pipe -fPIC -DNDEBUG -I. -Iinclude -Iinclude/util -Iinclude/hoard -Iinclude/superblocks -IHeap-Layers -D_REENTRANT=1 -shared
source/libhoard.cpp source/unixtls.cpp Heap-Layers/wrappers/gnuwrapper.cpp -Bsymbolic -o libhoard.so -ldl -lpthread
error: invalid value ‘c++14’ in '-std=c++14’
error: invalid value ‘c++14’ in '-std=c++14’
error: invalid value ‘c++14’ in '-std=c++14’
make: *** [Linux-gcc-x86_64] Error 1

rpm -Uvh libresample-devel-0.1.3-20.gf.el7.x86_64.rpm
error: Failed dependencies:
libresample = 0.1.3-20.gf.el7 is needed by libresample-devel-0.1.3-20.gf.el7.x86_64