Index: buildbot/osuosl/master/config/builders.py
===================================================================
--- buildbot/osuosl/master/config/builders.py
+++ buildbot/osuosl/master/config/builders.py
@@ -1473,6 +1473,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DLLVM_BUILD_LLVM_DYLIB=ON",
                         "-DLLVM_LINK_LLVM_DYLIB=ON",
                         "-DCMAKE_CXX_STANDARD=17",
@@ -1487,6 +1488,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DBUILD_SHARED_LIBS=ON",
                         "-DLLVM_BUILD_EXAMPLES=ON",
                         "-DCMAKE_CXX_STANDARD=17",
@@ -1499,6 +1501,7 @@
     'factory' : FlangBuilder.getFlangOutOfTreeBuildFactory(
                     checks=['check-flang'],
                     llvm_extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DCMAKE_CXX_STANDARD=17",
                         "-DLLVM_ENABLE_WERROR=OFF",
                         "-DLLVM_ENABLE_ASSERTIONS=ON",
@@ -1518,6 +1521,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DCMAKE_BUILD_TYPE=Debug",
                         "-DCMAKE_CXX_STANDARD=17",
                         "-DLLVM_USE_LINKER=lld",
@@ -1532,6 +1536,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DLLVM_INSTALL_UTILS=ON",
                         "-DCMAKE_CXX_STANDARD=17",
                         "-DLLVM_ENABLE_WERROR=OFF",
@@ -1551,6 +1556,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCMAKE_CXX_STANDARD=17",
                     ])},
@@ -1564,6 +1570,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DLLVM_ENABLE_ASSERTIONS=ON",
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCMAKE_CXX_STANDARD=17",
@@ -1578,6 +1585,7 @@
                     checks=['check-flang'],
                     depends_on_projects=['llvm','mlir','clang','flang'],
                     extra_configure_args=[
+                        "-DLLVM_TARGETS_TO_BUILD=AArch64",
                         "-DLLVM_INSTALL_UTILS=ON",
                         "-DCMAKE_CXX_STANDARD=17",
                         "-DLLVM_ENABLE_WERROR=OFF",