make: *** No rule to make target `install'. Stop.

[jonmcclung]

On macOS 10.13.6 I get an error on make install for a very basic configuration. Here is the script I am using:

#!/bin/bash
# test.sh

rm -rf PHP-CPP
git clone https://github.com/CopernicaMarketingSoftware/PHP-CPP.git

rm -rf build
mkdir build
cd build

# This prevents countless warnings about 'override' not being specified
cmake -E env CXXFLAGS="-Wno-inconsistent-missing-override" \
    cmake \
        -DCMAKE_INSTALL_PREFIX=../mac \
        -DCMAKE_CXX_STANDARD=11 \
        -DPHPCPP_ARCH=x86_64 \
        -DPHPCPP_PHP_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/php\
    ../PHP-CPP
make
make install

And here is the output:

$ ./test.sh
Cloning into 'PHP-CPP'...
remote: Enumerating objects: 75, done.
remote: Counting objects: 100% (75/75), done.
remote: Compressing objects: 100% (43/43), done.
remote: Total 5848 (delta 43), reused 50 (delta 31), pack-reused 5773
Receiving objects: 100% (5848/5848), 1.86 MiB | 6.81 MiB/s, done.
Resolving deltas: 100% (4112/4112), done.
-- The C compiler identification is AppleClang 10.0.0.10001145
-- The CXX compiler identification is AppleClang 10.0.0.10001145
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /absolute/path/redacted/build
Scanning dependencies of target phpcpp-common
[  2%] Building CXX object CMakeFiles/phpcpp-common.dir/common/modifiers.cpp.o
[  5%] Building CXX object CMakeFiles/phpcpp-common.dir/common/streambuf.cpp.o
[  7%] Linking CXX static library libphpcpp-common.a
[  7%] Built target phpcpp-common
Scanning dependencies of target phpcpp
[ 10%] Building CXX object CMakeFiles/phpcpp.dir/zend/base.cpp.o
[ 13%] Building CXX object CMakeFiles/phpcpp.dir/zend/callable.cpp.o
[ 15%] Building CXX object CMakeFiles/phpcpp.dir/zend/classbase.cpp.o
[ 18%] Building CXX object CMakeFiles/phpcpp.dir/zend/classimpl.cpp.o
[ 21%] Building CXX object CMakeFiles/phpcpp.dir/zend/constant.cpp.o
[ 23%] Building CXX object CMakeFiles/phpcpp.dir/zend/constantfuncs.cpp.o
[ 26%] Building CXX object CMakeFiles/phpcpp.dir/zend/eval.cpp.o
[ 28%] Building CXX object CMakeFiles/phpcpp.dir/zend/exception_handler.cpp.o
[ 31%] Building CXX object CMakeFiles/phpcpp.dir/zend/exists.cpp.o
[ 34%] Building CXX object CMakeFiles/phpcpp.dir/zend/extension.cpp.o
[ 36%] Building CXX object CMakeFiles/phpcpp.dir/zend/extensionimpl.cpp.o
[ 39%] Building CXX object CMakeFiles/phpcpp.dir/zend/fatalerror.cpp.o
[ 42%] Building CXX object CMakeFiles/phpcpp.dir/zend/file.cpp.o
[ 44%] Building CXX object CMakeFiles/phpcpp.dir/zend/function.cpp.o
[ 47%] Building CXX object CMakeFiles/phpcpp.dir/zend/functor.cpp.o
[ 50%] Building CXX object CMakeFiles/phpcpp.dir/zend/global.cpp.o
[ 52%] Building CXX object CMakeFiles/phpcpp.dir/zend/globals.cpp.o
[ 55%] Building CXX object CMakeFiles/phpcpp.dir/zend/hashmember.cpp.o
[ 57%] Building CXX object CMakeFiles/phpcpp.dir/zend/ini.cpp.o
[ 60%] Building CXX object CMakeFiles/phpcpp.dir/zend/inivalue.cpp.o
[ 63%] Building CXX object CMakeFiles/phpcpp.dir/zend/iteratorimpl.cpp.o
[ 65%] Building CXX object CMakeFiles/phpcpp.dir/zend/members.cpp.o
[ 68%] Building CXX object CMakeFiles/phpcpp.dir/zend/module.cpp.o
[ 71%] Building CXX object CMakeFiles/phpcpp.dir/zend/namespace.cpp.o
[ 73%] Building CXX object CMakeFiles/phpcpp.dir/zend/object.cpp.o
[ 76%] Building CXX object CMakeFiles/phpcpp.dir/zend/sapi.cpp.o
[ 78%] Building CXX object CMakeFiles/phpcpp.dir/zend/script.cpp.o
[ 81%] Building CXX object CMakeFiles/phpcpp.dir/zend/streambuf.cpp.o
[ 84%] Building CXX object CMakeFiles/phpcpp.dir/zend/streams.cpp.o
[ 86%] Building CXX object CMakeFiles/phpcpp.dir/zend/super.cpp.o
[ 89%] Building CXX object CMakeFiles/phpcpp.dir/zend/value.cpp.o
[ 92%] Building CXX object CMakeFiles/phpcpp.dir/zend/valueiterator.cpp.o
[ 94%] Building CXX object CMakeFiles/phpcpp.dir/zend/zendcallable.cpp.o
[ 97%] Building CXX object CMakeFiles/phpcpp.dir/zend/zval.cpp.o
[100%] Linking CXX static library libphpcpp.a
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libphpcpp.a(members.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libphpcpp.a(members.cpp.o) has no symbols
[100%] Built target phpcpp
make: *** No rule to make target `install'.  Stop.

As you can see, it complains that there is no rule to make target `install'.

I also note that it says libphpcpp.a(members.cpp.o) has no symbols, though I'm not convinced that is an error.

I find it odd that I run into these issues with so basic a configuration. Please advise.