[Doxygen-develop] Build error for Ninja Generator

[masaru t. <m.t...@gm...>]

Hi

I found a bug that doxygen can't compile for Ninja generator.
It works for 'Unix Makefiles' generator

This is the error message.

ninja: warning: multiple rules generate generated_src/configvalues.h.
builds involving this target will not be correct; continuing anyway [-w
dupbuild=warn]
ninja: error: build.ninja:2384: bad $-escape (literal $ must be written as
$$)

This is the diff of build.ninja between good revision (
ok_b6f01ff09b17e5c2288f2418ef0a8f074456c357)
and bad revision (c78c338fffbdbb9b2379b1896e647f7cc697da57)

$ diff build/build.ninja ok_b6f01ff09b17e5c2288f2418ef0a8f074456c357
2384c2384
<   COMMAND = cd /home/user/gitwork/doxygen/build/testing &&
/usr/bin/python /home/user/gitwork/doxygen/testing/runtests.py
$(TEST_FLAGS) --doxygen /home/user/gitwork/doxygen/build/bin/doxygen
--inputdir /home/user/gitwork/doxygen/testing --outputdir
/home/user/gitwork/doxygen/build/testing
---
>   COMMAND = cd /home/user/gitwork/doxygen/build/testing &&
/usr/bin/python /home/user/gitwork/doxygen/testing/runtests.py --all
--doxygen /home/user/gitwork/doxygen/build/bin/doxygen --inputdir
/home/user/gitwork/doxygen/testing --outputdir
/home/user/gitwork/doxygen/build/testing

By tweaking  $(TEST_FLAGS) to  --all, the build succeeded.

This is a script to reproduce.
-------------------------------------------------------------------------------
#!/bin/sh

if [ -e build ]; then
  rm -rf build
fi
mkdir build
cd build

cmake -G Ninja -D CMAKE_BUILD_TYPE=Release ..
cmake --build . -- -j 3 -v || echo error && cd .. && exit 1

cd ..
-------------------------------------------------------------------------------