Avoid downloading glm sources during the build

.gitignore

@@ -24,3 +24,4 @@ mmapper-2.0.4-final2-source.tar.gz
 /MMapper-2.8.0.tar.gz
 /MMapper-19.04.0.tar.gz
 /MMapper-19.10.0.tar.gz
+/0.9.9-a2.zip

mmapper.spec

@@ -6,6 +6,7 @@ Summary:        Graphical MUME mapper
 License:        GPLv2+
 URL:            https://github.com/MUME/MMapper
 Source0:        https://github.com/MUME/MMapper/archive/v%{version}/MMapper-%{version}.tar.gz
+Source1:        https://github.com/g-truc/glm/archive/0.9.9-a2.zip
 
 BuildRequires:  /usr/bin/appstream-util
 BuildRequires:  cmake
@@ -17,6 +18,8 @@ BuildRequires:  zlib-devel
 
 Requires:       hicolor-icon-theme
 
+Provides:       bundled(glm) = 0.9.9-a2
+
 %description
 MMapper is a graphical mapper for a MUD named MUME (Multi-Users in Middle
 Earth). The game is traditionally played in a text-only mode, but MMapper tries
@@ -32,6 +35,8 @@ data in real time and show player's position in a map.
 %build
 mkdir -p %{_target_platform}
 pushd %{_target_platform}
+mkdir -p external/glm/glm-prefix/src
+cp -a %{S:1} external/glm/glm-prefix/src/
 %{cmake} \
   -DCMAKE_BUILD_TYPE=Release \
   -DWITH_MAP=OFF \

sources

@@ -1 +1,2 @@
 SHA512 (MMapper-19.10.0.tar.gz) = 893ee4a99dde61e9a43357eddb001e22c8af17aa3ac5f9aa3a7593a32439a2cb65ef125e3d9613229b4569c952105d36774cca9082dc535667d4af9392db42ad
+SHA512 (0.9.9-a2.zip) = b3a6200dd2f86a14e55b9ee1d045b224f189a9651cfbedd9632c8bb4b67fb2f14d0c21790f43bfddcb457741a440d868ba2becd195034f8d44f7b335a5bc02ec