From 649865d408846d1559e736abf1be5d74207e6313 Mon Sep 17 00:00:00 2001
From: Erik Kundiman <erik@megapahit.org>
Date: Sat, 10 Aug 2024 18:54:19 +0800
Subject: Automatic Meshoptimizer download, build & install

on macOS and Fedora.
---
 indra/cmake/Meshoptimizer.cmake | 60 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 54 insertions(+), 6 deletions(-)

(limited to 'indra/cmake')

diff --git a/indra/cmake/Meshoptimizer.cmake b/indra/cmake/Meshoptimizer.cmake
index a1cf81be80..07ea3120a7 100644
--- a/indra/cmake/Meshoptimizer.cmake
+++ b/indra/cmake/Meshoptimizer.cmake
@@ -6,14 +6,61 @@ include(Prebuilt)
 include_guard()
 add_library( ll::meshoptimizer INTERFACE IMPORTED )
 
-if (NOT (USE_AUTOBUILD_3P OR USE_CONAN))
-  target_include_directories( ll::meshoptimizer SYSTEM INTERFACE ${CMAKE_SYSROOT}/usr/local/include )
-  target_link_libraries( ll::meshoptimizer INTERFACE meshoptimizer)
-  return ()
-endif ()
-
+if (NOT USESYSTEMLIBS)
 use_system_binary(meshoptimizer)
+else (NOT USESYSTEMLIBS)
+  cmake_host_system_information(RESULT MAKE_JOBS QUERY NUMBER_OF_LOGICAL_CORES)
+  if (LINUX)
+    cmake_host_system_information(RESULT LINUX_DISTRO QUERY DISTRIB_ID)
+  endif (LINUX)
+  if (NOT (${LINUX_DISTRO} MATCHES fedora OR DARWIN))
+    find_package(meshoptimizer)
+  endif (NOT (${LINUX_DISTRO} MATCHES fedora OR DARWIN))
+endif (NOT USESYSTEMLIBS)
+
+if (${LINUX_DISTRO} MATCHES fedora OR DARWIN OR NOT USESYSTEMLIBS)
+  if (USESYSTEMLIBS)
+    if (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed OR NOT ${meshoptimizer_installed} EQUAL 0)
+      execute_process(
+        COMMAND mkdir -p ${AUTOBUILD_INSTALL_DIR}/include/meshoptimizer
+        COMMAND curl
+          -L https://github.com/zeux/meshoptimizer/archive/refs/tags/v0.21.tar.gz
+          -o meshoptimizer-0.21.tar.gz
+        WORKING_DIRECTORY $ENV{HOME}/Downloads
+        )
+      execute_process(
+        COMMAND tar xf $ENV{HOME}/Downloads/meshoptimizer-0.21.tar.gz
+        WORKING_DIRECTORY /tmp
+        )
+      execute_process(
+        COMMAND cmake
+          -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
+          .
+        WORKING_DIRECTORY /tmp/meshoptimizer-0.21
+        )
+      if (DARWIN)
+        execute_process(
+          COMMAND cmake
+            -DCMAKE_OSX_ARCHITECTURES:STRING=arm64
+            -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.15
+            .
+          WORKING_DIRECTORY /tmp/meshoptimizer-0.21
+          )
+      endif (DARWIN)
+      execute_process(
+        COMMAND make -j${MAKE_JOBS}
+        WORKING_DIRECTORY /tmp/meshoptimizer-0.21
+        )
+      execute_process(
+        COMMAND cp /tmp/meshoptimizer-0.21/src/meshoptimizer.h ${AUTOBUILD_INSTALL_DIR}/include/meshoptimizer/
+        COMMAND cp /tmp/meshoptimizer-0.21/libmeshoptimizer.a ${AUTOBUILD_INSTALL_DIR}/lib/release/
+        WORKING_DIRECTORY ${AUTOBUILD_INSTALL_DIR}
+        RESULT_VARIABLE meshoptimizer_installed
+        )
+    endif (${PREBUILD_TRACKING_DIR}/sentinel_installed IS_NEWER_THAN ${PREBUILD_TRACKING_DIR}/meshoptimizer_installed OR NOT ${meshoptimizer_installed} EQUAL 0)
+  else (USESYSTEMLIBS)
 use_prebuilt_binary(meshoptimizer)
+  endif (USESYSTEMLIBS)
 
 if (WINDOWS)
   target_link_libraries( ll::meshoptimizer INTERFACE meshoptimizer.lib)
@@ -24,3 +71,4 @@ elseif (DARWIN)
 endif (WINDOWS)
 
 target_include_directories( ll::meshoptimizer SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/meshoptimizer)
+endif (${LINUX_DISTRO} MATCHES fedora OR DARWIN OR NOT USESYSTEMLIBS)
-- 
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