From 9e1290855634b5360f56012a9824c7aca2b8271d Mon Sep 17 00:00:00 2001
From: Sundaram Ramaswamy <legends2k@yahoo.com>
Date: Thu, 25 Mar 2021 17:47:43 +0530
Subject: [PATCH] Add CMake interface library target
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Projects using cglm as a header-only library needn’t build files under
src/. Provide a target which allows them to skip compiling them by

add_subdirectory(external/cglm EXCLUDE_FROM_ALL)
target_link_libraries(MyExe PRIVATE cglm_headers)
---
 CMakeLists.txt | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cd48ea..db582a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,6 +93,81 @@ target_include_directories(${PROJECT_NAME}
         ${CMAKE_CURRENT_SOURCE_DIR}/src
 )
 
+# Target for header-only usage
+add_library(${PROJECT_NAME}_headers INTERFACE
+  include/cglm/affine-mat.h
+  include/cglm/affine.h
+  include/cglm/affine2d.h
+  include/cglm/applesimd.h
+  include/cglm/bezier.h
+  include/cglm/box.h
+  include/cglm/call.h
+  include/cglm/cam.h
+  include/cglm/cglm.h
+  include/cglm/color.h
+  include/cglm/common.h
+  include/cglm/curve.h
+  include/cglm/ease.h
+  include/cglm/euler.h
+  include/cglm/frustum.h
+  include/cglm/io.h
+  include/cglm/mat2.h
+  include/cglm/mat3.h
+  include/cglm/mat4.h
+  include/cglm/plane.h
+  include/cglm/project.h
+  include/cglm/quat.h
+  include/cglm/ray.h
+  include/cglm/sphere.h
+  include/cglm/struct.h
+  include/cglm/types-struct.h
+  include/cglm/types.h
+  include/cglm/util.h
+  include/cglm/vec2-ext.h
+  include/cglm/vec2.h
+  include/cglm/vec3-ext.h
+  include/cglm/vec3.h
+  include/cglm/vec4-ext.h
+  include/cglm/vec4.h
+  include/cglm/version.h
+  include/cglm/simd/arm.h
+  include/cglm/simd/avx/affine.h
+  include/cglm/simd/avx/mat4.h
+  include/cglm/simd/intrin.h
+  include/cglm/simd/neon/mat4.h
+  include/cglm/simd/sse2/affine.h
+  include/cglm/simd/sse2/mat2.h
+  include/cglm/simd/sse2/mat3.h
+  include/cglm/simd/sse2/mat4.h
+  include/cglm/simd/sse2/quat.h
+  include/cglm/simd/x86.h
+  include/cglm/struct/affine.h
+  include/cglm/struct/affine2d.h
+  include/cglm/struct/box.h
+  include/cglm/struct/cam.h
+  include/cglm/struct/color.h
+  include/cglm/struct/curve.h
+  include/cglm/struct/euler.h
+  include/cglm/struct/frustum.h
+  include/cglm/struct/io.h
+  include/cglm/struct/mat2.h
+  include/cglm/struct/mat3.h
+  include/cglm/struct/mat4.h
+  include/cglm/struct/plane.h
+  include/cglm/struct/project.h
+  include/cglm/struct/quat.h
+  include/cglm/struct/sphere.h
+  include/cglm/struct/vec2-ext.h
+  include/cglm/struct/vec2.h
+  include/cglm/struct/vec3-ext.h
+  include/cglm/struct/vec3.h
+  include/cglm/struct/vec4-ext.h
+  include/cglm/struct/vec4.h
+  )
+
+target_include_directories(${PROJECT_NAME}_headers INTERFACE
+  ${CMAKE_CURRENT_SOURCE_DIR}/include)
+
 # Test Configuration
 if(CGLM_USE_TEST)
   include(CTest)