gentoo-overlay/dev-lang/rust/files/1.47.0-llvm-tensorflow-fix.patch

From 8dcb88f7705fb3927938dd9bd103efcabafcefb0 Mon Sep 17 00:00:00 2001
From: Georgy Yakovlev <gyakovlev@gentoo.org>
Date: Tue, 27 Oct 2020 18:20:56 -0700
Subject: [PATCH] backport D88371, guard `find_library(tensorflow_c_api ...)`

Differential Revision: https://reviews.llvm.org/D88371
Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org>
---
 src/llvm-project/llvm/CMakeLists.txt | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/llvm-project/llvm/CMakeLists.txt b/src/llvm-project/llvm/CMakeLists.txt
index 1f137f0..4112def 100644
--- a/src/llvm-project/llvm/CMakeLists.txt
+++ b/src/llvm-project/llvm/CMakeLists.txt
@@ -832,6 +832,11 @@ configure_file(
   ${LLVM_INCLUDE_DIR}/llvm/Config/Targets.def
   )
 
+# They are not referenced. See set_output_directory().
+set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
+set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
+set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
+
 # For up-to-date instructions for installing the Tensorflow dependency, refer to
 # the bot setup script: https://github.com/google/ml-compiler-opt/blob/master/buildbot/buildbot_init.sh
 # In this case, the latest C API library is available for download from
@@ -840,9 +845,9 @@ configure_file(
 # LLVM_HAVE_TF_API, through llvm-config.h, so that a user of the LLVM library may
 # also leverage the dependency.
 set(TENSORFLOW_C_LIB_PATH "" CACHE PATH "Path to TensorFlow C library install")
-find_library(tensorflow_c_api tensorflow PATHS ${TENSORFLOW_C_LIB_PATH}/lib)
 
-if (tensorflow_c_api)
+if (TENSORFLOW_C_LIB_PATH)
+  find_library(tensorflow_c_api tensorflow PATHS ${TENSORFLOW_C_LIB_PATH}/lib NO_DEFAULT_PATH REQUIRED)
   set(LLVM_HAVE_TF_API "ON" CACHE BOOL "Full Tensorflow API available")
   include_directories(${TENSORFLOW_C_LIB_PATH}/include)
 endif()
@@ -877,12 +882,6 @@ add_custom_target(srpm
   COMMAND rpmbuild -bs --define '_topdir ${LLVM_SRPM_DIR}' ${LLVM_SRPM_BINARY_SPECFILE})
 set_target_properties(srpm PROPERTIES FOLDER "Misc")
 
-
-# They are not referenced. See set_output_directory().
-set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
-set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
-set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
-
 if(APPLE AND DARWIN_LTO_LIBRARY)
   set(CMAKE_EXE_LINKER_FLAGS
     "${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
-- 
2.26.2