Applying local patch to workaround abseil/abseil-cpp/issues/1769 (#60)

Until abseil integrates this fix upstream, grpc picks up the new version of abseil with the fix, and until triton upgrades the grpc dependency, this will alleviate the repeated build issues in the meantime.

CMakeLists.txt

@@ -118,7 +118,9 @@ ExternalProject_Add(grpc-repo
   TEST_COMMAND ""
   CMAKE_CACHE_ARGS
     -DCMAKE_CXX_STANDARD:STRING=${TRITON_MIN_CXX_STANDARD}
-  PATCH_COMMAND python3 ${CMAKE_CURRENT_SOURCE_DIR}/tools/install_src.py --src <SOURCE_DIR> ${INSTALL_SRC_DEST_ARG} --dest-basename=grpc_1.54.3
+  # TODO(nnoble): remove this patch when the fix for https://github.com/abseil/abseil-cpp/issues/1769 is integrated within our dependencies
+  PATCH_COMMAND patch -N -i ${CMAKE_CURRENT_SOURCE_DIR}/tools/abseil_no_rebuild.patch -d ${CMAKE_CURRENT_BINARY_DIR}/grpc-repo/src/grpc/third_party/abseil-cpp || true
+  COMMAND python3 ${CMAKE_CURRENT_SOURCE_DIR}/tools/install_src.py --src <SOURCE_DIR> ${INSTALL_SRC_DEST_ARG} --dest-basename=grpc_1.54.3
 )
 #
 # Build nlohmann/json

tools/abseil_no_rebuild.patch

@@ -0,0 +1,29 @@
+--- CMakeLists.txt	2024-10-11 14:53:24.305084638 -0700
++++ CMakeLists.txt	2024-10-11 14:53:35.288981516 -0700
+@@ -214,6 +214,7 @@
+       PATTERN "*.h"
+       PATTERN "copts" EXCLUDE
+       PATTERN "testdata" EXCLUDE
++      PATTERN "options.h" EXCLUDE
+     )
+
+   file(READ "absl/base/options.h" ABSL_INTERNAL_OPTIONS_H_CONTENTS)
+@@ -230,7 +231,17 @@
+       ABSL_INTERNAL_OPTIONS_H_PINNED
+       "${ABSL_INTERNAL_OPTIONS_H_CONTENTS}")
+   endif()
+-  file(WRITE "${CMAKE_BINARY_DIR}/options-pinned.h" "${ABSL_INTERNAL_OPTIONS_H_PINNED}")
++  set(ABSL_INTERNAL_OPTIONS_H_PINNED_GENERATE TRUE)
++  if (EXISTS "${CMAKE_BINARY_DIR}/options-pinned.h")
++    file(READ "${CMAKE_BINARY_DIR}/options-pinned.h" ABSL_INTERNAL_OPTIONS_PINNED_H_CONTENTS)
++    if ("${ABSL_INTERNAL_OPTIONS_H_PINNED}" STREQUAL "${ABSL_INTERNAL_OPTIONS_PINNED_H_CONTENTS}")
++      set(ABSL_INTERNAL_OPTIONS_H_PINNED_GENERATE FALSE)
++    endif()
++  endif()
++
++  if (ABSL_INTERNAL_OPTIONS_H_PINNED_GENERATE)
++    file(GENERATE OUTPUT "${CMAKE_BINARY_DIR}/options-pinned.h" CONTENT "${ABSL_INTERNAL_OPTIONS_H_PINNED}")
++  endif()
+
+   install(FILES "${CMAKE_BINARY_DIR}/options-pinned.h"
+          DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/absl/base