LLVM 19 is incompatible with static library inclusion.

Author: elliottslaughter

.github/workflows/main.yml

@@ -24,6 +24,7 @@ jobs:
         llvm: ['11', '12', '13', '14', '15', '16', '17', '18', '19']
         cuda: ['0', '1']
         lua: ['luajit', 'moonjit']
+        slib: ['0', '1']
         exclude:
           # macOS: exclude cuda
           - os: 'macos-13'
@@ -100,6 +101,26 @@ jobs:
             lua: 'moonjit'
           - llvm: '19'
             lua: 'moonjit'
+
+          # LLVM 19 is incompatible with SLIB_INCLUDE_LLVM
+          - llvm: '11'
+            slib: '0'
+          - llvm: '12'
+            slib: '0'
+          - llvm: '13'
+            slib: '0'
+          - llvm: '14'
+            slib: '0'
+          - llvm: '15'
+            slib: '0'
+          - llvm: '16'
+            slib: '0'
+          - llvm: '17'
+            slib: '0'
+          - llvm: '18'
+            slib: '0'
+          - llvm: '19'
+            slib: '1'
     steps:
       - uses: actions/checkout@v4
       - run: ./travis.sh
@@ -109,7 +130,7 @@ jobs:
           USE_CUDA: ${{ matrix.cuda }}
           STATIC_LLVM: 1
           STATIC_LUAJIT: 1
-          SLIB_INCLUDE_LLVM: 1
+          SLIB_INCLUDE_LLVM: ${{ matrix.slib }}
           SLIB_INCLUDE_LUAJIT: 1
           TERRA_LUA: ${{ matrix.lua }}
       - uses: actions/upload-artifact@v4
@@ -178,7 +199,7 @@ jobs:
             lua: 'luajit'
             cuda: '0'
             variant: 'prebuilt'
-            slib: '1'
+            slib: '0'
             static: '1'
 
           # LLVM 12, 13, 14 on Ubuntu 22.04

CMakeLists.txt

@@ -17,7 +17,7 @@ set(TERRA_ENABLE_CUDA ${CUDA_FOUND} CACHE BOOL "Build Terra with support for CUD
 if(DEFINED TERRA_STATIC_LINK_LLVM)
   set(DEFAULT_TERRA_SLIB_INCLUDE_LLVM ${TERRA_STATIC_LINK_LLVM})
 else()
-  if(WIN32)
+  if(WIN32 OR LLVM_VERSION_MAJOR GREATER 18)
     set(DEFAULT_TERRA_SLIB_INCLUDE_LLVM OFF)
   else()
     set(DEFAULT_TERRA_SLIB_INCLUDE_LLVM ON)
@@ -26,6 +26,13 @@ endif()
 set(TERRA_SLIB_INCLUDE_LLVM ${DEFAULT_TERRA_SLIB_INCLUDE_LLVM} CACHE BOOL "Include LLVM in Terra static libraries")
 set(TERRA_STATIC_LINK_LLVM ON CACHE BOOL "Statically link Terra against LLVM")
 
+if(LLVM_VERSION_MAJOR GREATER 18)
+  set(DEFAULT_TERRA_WHOLE_ARCHIVE_LLVM OFF)
+else()
+  set(DEFAULT_TERRA_WHOLE_ARCHIVE_LLVM ON)
+endif()
+set(TERRA_WHOLE_ARCHIVE_LLVM ${DEFAULT_TERRA_WHOLE_ARCHIVE_LLVM} CACHE BOOL "When statically linking LLVM, force inclusion of all objects")
+
 if(TERRA_SLIB_INCLUDE_LLVM AND NOT TERRA_STATIC_LINK_LLVM)
   message(FATAL_ERROR "TERRA_SLIB_INCLUDE_LLVM requires TERRA_STATIC_LINK_LLVM to be set")
 endif()

cmake/Modules/ExtractLLVM.cmake

@@ -69,22 +69,22 @@ elseif(TERRA_STATIC_LINK_LLVM)
     endif()
   endforeach()
 
-  if(UNIX AND NOT APPLE)
+  if(UNIX AND NOT APPLE AND TERRA_WHOLE_ARCHIVE_LLVM)
     list(APPEND ALL_LLVM_LIBRARIES
       -Wl,-export-dynamic
       -Wl,--whole-archive
     )
   endif()
 
   foreach(LLVM_LIB_PATH ${LLVM_LIBRARIES} ${CLANG_LIBRARIES})
-    if(APPLE)
+    if(APPLE AND TERRA_WHOLE_ARCHIVE_LLVM)
       list(APPEND ALL_LLVM_LIBRARIES "-Wl,-force_load,${LLVM_LIB_PATH}")
     else()
       list(APPEND ALL_LLVM_LIBRARIES "${LLVM_LIB_PATH}")
     endif()
   endforeach()
 
-  if(UNIX AND NOT APPLE)
+  if(UNIX AND NOT APPLE AND TERRA_WHOLE_ARCHIVE_LLVM)
     list(APPEND ALL_LLVM_LIBRARIES
       -Wl,--no-whole-archive
     )