From a3ea5154d6507cb8a09f778c2242774f0ffa0dca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Tue, 9 Apr 2019 09:58:38 +0200
Subject: [PATCH] GL: explicitly instantiate template function.

It suddenly started causing linker errors on macOS Travis builds.
---
 src/Magnum/GL/AbstractTexture.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Magnum/GL/AbstractTexture.cpp b/src/Magnum/GL/AbstractTexture.cpp
index b8559915d..10e0f9a11 100644
--- a/src/Magnum/GL/AbstractTexture.cpp
+++ b/src/Magnum/GL/AbstractTexture.cpp
@@ -1736,6 +1736,10 @@ template<UnsignedInt dimensions> std::size_t AbstractTexture::compressedSubImage
         compressedBlockDataSize(_target, format);
 }
 
+template std::size_t MAGNUM_GL_EXPORT AbstractTexture::compressedSubImageSize<1>(TextureFormat format, const Math::Vector<1, Int>& size);
+template std::size_t MAGNUM_GL_EXPORT AbstractTexture::compressedSubImageSize<2>(TextureFormat format, const Math::Vector<2, Int>& size);
+template std::size_t MAGNUM_GL_EXPORT AbstractTexture::compressedSubImageSize<3>(TextureFormat format, const Math::Vector<3, Int>& size);
+
 template<UnsignedInt dimensions> void AbstractTexture::compressedSubImage(const GLint level, const RangeTypeFor<dimensions, Int>& range, CompressedImage<dimensions>& image) {
     createIfNotAlready();