fix (partially) linux compilation

src/GPUFontAtlasLayerCombo.cpp

@@ -24,10 +24,18 @@ void GPUFontAtlasLayerCombo::setup(const ComboIdentifier & identifier,
     shaderCatalog = std::make_shared <ofxGPUFont::ShaderCatalog>(shaderDir);
 
     if(this->settings.bufferTargetType == GL_TEXTURE_2D_ARRAY){
+        #ifdef TARGET_EMSCRIPTEN
             fontShader = shaderCatalog->get("font_ta");
+        #else
+            fontShader = shaderCatalog->get("font");
+        #endif
     }else if(this->settings.bufferTargetType == GL_UNIFORM_BUFFER){
+        #ifdef TARGET_EMSCRIPTEN
             shaderCatalog->setReplacement("{{CURVES_BUFFER_SIZE}}", "2048");
             fontShader = shaderCatalog->get("font_ub");
+        #else
+            fontShader = shaderCatalog->get("font");
+        #endif
     }
     fontShaderProgram = fontShader->program;
 

src/LayerComposition.cpp

@@ -7,7 +7,9 @@
 #include "MsdfLayer.h"
 #include "Utils.h"
 #include "ofUtils.h"
+#ifdef TARGET_EMSCRIPTEN
  #include <GLES3/gl3.h>
+#endif
 #include <memory>
 
 namespace ofxVariableLab {