Add an install test to catch us breaking the installation code.

Fixes #503.

Author: SiegeLordEx

.travis.yml

@@ -13,7 +13,7 @@ before_install:
          export DISPLAY=:99.0;
          sh -e /etc/init.d/xvfb start;
          sudo apt-get update;
-         sudo apt-get install -y libvorbis-dev libtheora-dev libphysfs-dev libdumb1-dev libflac-dev libpulse-dev libgtk2.0-dev pandoc libcurl4-nss-dev libenet-dev;
+         sudo apt-get install -y libvorbis-dev libtheora-dev libphysfs-dev libdumb1-dev libflac-dev libpulse-dev libgtk2.0-dev pandoc libcurl4-nss-dev libenet-dev pulseaudio;
       elif [ `uname` = "Darwin" ]; then
          brew install cmake opusfile libvorbis freetype flac physfs;
       fi
@@ -34,6 +34,11 @@ script:
          . ../tests/grab_bitmap_suites.sh
          find ../tests -name '*.ini' | grep -v 'compressed' | xargs tests/test_driver | tee /tmp/test_out
          grep -q 'failed tests: 0' /tmp/test_out
+         sudo make install
+         sudo ldconfig
+         gcc ../misc/install_test.c -o install_test $(pkg-config --cflags --libs allegro_image-debug-5 allegro_ttf-debug-5 allegro_acodec-debug-5 allegro_dialog-debug-5 allegro_primitives-debug-5 allegro_video-debug-5)
+         pulseaudio -D
+         ./install_test
       elif [ `uname` = "Darwin" ]; then
          cmake .. -DWANT_SHADERS_GL=$WANT_SHADERS_GL -G Xcode
          xcodebuild

misc/install_test.c

@@ -0,0 +1,50 @@
+/*
+ * A small test program that you can compile and run to verify that Allegro was
+ * installed correctly. It assumes you installed all the addons.
+ */
+
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_font.h>
+#include <allegro5/allegro_ttf.h>
+#include <allegro5/allegro_image.h>
+#include <allegro5/allegro_audio.h>
+#include <allegro5/allegro_acodec.h>
+#include <allegro5/allegro_native_dialog.h>
+#include <allegro5/allegro_primitives.h>
+#include <allegro5/allegro_video.h>
+#include <allegro5/allegro_color.h>
+#include <allegro5/allegro_physfs.h>
+#include <allegro5/allegro_memfile.h>
+
+#include <stdio.h>
+
+int main() {
+   uint32_t version = al_get_allegro_version();
+   int major = version >> 24;
+   int minor = (version >> 16) & 255;
+   int revision = (version >> 8) & 255;
+   int release = version & 255;
+
+   fprintf(stderr, "Library version: %d.%d.%d.%d\n", major, minor, revision, release);
+   fprintf(stderr, "Header version: %d.%d.%d.%d\n", ALLEGRO_VERSION, ALLEGRO_SUB_VERSION, ALLEGRO_WIP_VERSION, ALLEGRO_RELEASE_NUMBER);
+   fprintf(stderr, "Header version string: %s\n", ALLEGRO_VERSION_STR);
+
+   if (!al_init()) {
+      fprintf(stderr, "Failed to initialize Allegro, probably a header/shared library version mismatch.\n");
+      return -1;
+   }
+
+#define INIT_CHECK(init_function, addon_name) do { if (!init_function()) { fprintf(stderr, "Failed to initialize the " addon_name " addon.\n"); return -1; } } while (0)
+
+   INIT_CHECK(al_init_font_addon, "font");
+   INIT_CHECK(al_init_ttf_addon, "TTF");
+   INIT_CHECK(al_init_image_addon, "image");
+   INIT_CHECK(al_install_audio, "audio");
+   INIT_CHECK(al_init_acodec_addon, "acodec");
+   INIT_CHECK(al_init_native_dialog_addon, "native dialog");
+   INIT_CHECK(al_init_primitives_addon, "primitives");
+   INIT_CHECK(al_init_video_addon, "video");
+
+   fprintf(stderr, "Everything looks good!\n");
+   return 0;
+}