'make uninstall' deletes unrelated *.pc files

[Jeffrey Walton]

I'm seeing some unusual behavior when building Ncurses 6.0 from
sources on Fedora 27. In this configuration Ncurses is configured for
/usr/local, but 'make uninstall' is deleting *.pc files from
/usr/lib64/pkgconfig.

For example, the unistall recipe deleted Boehm garbage collector files
in /usr/lib64/pkgconfig even though Ncurses was configured for
installation at /usr/local/lib64. Also see
https://bugzilla.redhat.com/show_bug.cgi?id=1541705 .

Does anyone know why unrelated PC files are being deleted?

******************************

$ ls /usr/lib64/pkgconfig/
bdw-gc.pc  formw.pc  menuw.pc  ncurses++w.pc  ncursesw.pc  panelw.pc  tinfow.pc

$ bash test.sh
--2018-02-04 16:18:01--  https://ftp.gnu.org/pub/gnu/ncurses/ncurses-6.0.tar.gz
...

** Configuration summary for NCURSES 6.0 20150808:

       extended funcs: yes
       xterm terminfo: xterm-new

        bin directory: /usr/local/bin
        lib directory: /usr/local/lib64
    include directory: /usr/local/include/ncursesw
        man directory: /usr/local/share/man
   terminfo directory: /usr/local/share/terminfo
 pkg-config directory: /lib64/pkgconfig

** Include-directory is not in a standard location

And then:

$ sudo make uninstall
...

# Totally empty, including the Boehm garbage collector.
$ ls /usr/lib64/pkgconfig/
$

******************************

$ cat test.sh
#!/usr/bin/env bash

wget --no-check-certificate
https://ftp.gnu.org/pub/gnu/ncurses/ncurses-6.0.tar.gz

gzip -d < ncurses-6.0.tar.gz | tar xf -
cd ncurses-6.0

INSTX_PREFIX="/usr/local"
INSTX_LIBDIR="/usr/local/lib64"

BUILD_PKGCONFIG=("/usr/local/lib64/pkgconfig")
BUILD_CPPFLAGS=("-I/usr/local/include -DNDEBUG")
BUILD_CFLAGS=("-g" "-m64" "-march=native" "-fPIC")
BUILD_CXXFLAGS=("-g" "-m64" "-march=native" "-fPIC")
BUILD_LDFLAGS=("-L/usr/local/lib64" "-m64" "-Wl,-R,/usr/local/lib64"
"-Wl,--enable-new-dtags")
BUILD_LDLIBS=("-ldl" "-lpthread")

    PKG_CONFIG_PATH="${BUILD_PKGCONFIG[*]}" \
    CPPFLAGS="${BUILD_CPPFLAGS[*]}" \
    CFLAGS="${BUILD_CFLAGS[*]}" \
    CXXFLAGS="${BUILD_CXXFLAGS[*]}" \
    LDFLAGS="${BUILD_LDFLAGS[*]}" \
    LIBS="${BUILD_LIBS[*]}" \
./configure --prefix="$INSTX_PREFIX" --libdir="$INSTX_LIBDIR" \
    --with-shared --with-cxx-shared --without-ada --enable-pc-files \
    --with-termlib --enable-widec --disable-root-environ \
    --with-build-cc="$CC" --with-build-cxx="$CXX" \
    --with-build-cpp="${BUILD_CPPFLAGS[*]}" \
    --with-build-cflags="${BUILD_CPPFLAGS[*]} ${BUILD_CFLAGS[*]}" \
    --with-build-cxxflags="${BUILD_CPPFLAGS[*]} ${BUILD_CXXFLAGS[*]}" \
    --with-build-ldflags="${BUILD_LDFLAGS[*]}" \
    --with-build-libs="${BUILD_LIBS[*]}"