Bug#822210: sdl2-config.cmake: extra leading / trailing whitespace

[Jason Pleau]

Package: libsdl2-dev
Version: 2.0.4+dfsg1-2+b1
Severity: normal

Dear Maintainer,

When trying to use SDL2 in a small project with CMake, I encountered the
following error:

CMake Error at CMakeLists.txt:18 (add_executable):
  Target "run" links to item "-L/usr/lib/x86_64-linux-gnu -lSDL2 " which has
  leading or trailing whitespace.  This is now an error according to policy
  CMP0004.


This is the relevant part of my own CMakeLists.txt (line 18):

------------------------------

find_package(SDL2 REQUIRED)

------------------------------


The offending line is in /usr/lib/x86_64-linux-gnu/cmake/SDL2/sdl2-config.cmake
(could be different depending on the arch used)

Line #10:

------------------------------------------------------

set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lSDL2 ")

------------------------------------------------------

Removing the trailing whitespace after -lSDL2 fixes the issue for me. (There's
also an extra leading whitespace before -lSDL2)

I am not certain how to fix this properly in the sdl2-config.cmake.in file,
otherwise I would have provided a patch.

For the info, the version of CMake I am running: 3.5.1-1

Thanks !



-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.5.2-jpleau (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libsdl2-dev depends on:
ii  libasound2-dev     1.1.0-1
ii  libdbus-1-dev      1.10.8-1
ii  libegl1-mesa-dev   11.1.3-1
ii  libgl1-mesa-dev    11.1.3-1
ii  libgles2-mesa-dev  11.1.3-1
ii  libglu1-mesa-dev   9.0.0-2.1
ii  libpulse-dev       8.0-2+b2
ii  libsdl2-2.0-0      2.0.4+dfsg1-2+b1
ii  libsndio-dev       1.1.0-2
ii  libudev-dev        229-4
ii  libwayland-dev     1.10.0-2
ii  libx11-dev         2:1.6.3-1
ii  libxcursor-dev     1:1.1.14-1+b1
ii  libxext-dev        2:1.3.3-1
ii  libxi-dev          2:1.7.6-1
ii  libxinerama-dev    2:1.1.3-1+b1
ii  libxkbcommon-dev   0.5.0-1
ii  libxrandr-dev      2:1.5.0-1
ii  libxss-dev         1:1.2.2-1
ii  libxt-dev          1:1.1.5-1
ii  libxv-dev          2:1.0.10-1+b1
ii  libxxf86vm-dev     1:1.1.4-1

libsdl2-dev recommends no packages.

libsdl2-dev suggests no packages.

-- no debconf information