commit 36ba7657976e4227271802dbaa524b853f94fb24
author Siva Chandra Reddy <sivachandra@google.com> Tue Jun 09 16:56:50 2020 -0700
committer Copybara-Service <copybara-worker@google.com> Sun Aug 30 14:19:09 2020 -0700
tree ba0af2802ab8f6df4bd100006b3ef199237439ce
parent f30f31ef45cff4ef0f64439fb06cb404d20f663e

[libc] Skip fuzzer as well if its dependent entrypoints are skipped.

Reviewers: asteinhauser

Subscribers: mgorny, tschuett, ecnelises, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D81519

GitOrigin-RevId: 9894236e705ef784bdac984ef63bb9f865efb27e

cmake/modules/LLVMLibCTestRules.cmake

diff --git a/cmake/modules/LLVMLibCTestRules.cmake b/cmake/modules/LLVMLibCTestRules.cmake
index e33f528..a30259c 100644
--- a/cmake/modules/LLVMLibCTestRules.cmake
+++ b/cmake/modules/LLVMLibCTestRules.cmake
@@ -198,6 +198,24 @@
   endif()
 
   get_fq_target_name(${target_name} fq_target_name)
+  get_fq_deps_list(fq_deps_list ${LIBC_FUZZER_DEPENDS})
+  get_object_files_for_test(
+      link_object_files skipped_entrypoints_list ${fq_deps_list})
+  if(skipped_entrypoints_list)
+    set(msg "Skipping fuzzer target ${fq_target_name} as it has missing deps: "
+            "${skipped_entrypoints_list}.")
+    message(STATUS ${msg})
+    add_custom_target(${fq_target_name})
+
+    # A post build custom command is used to avoid running the command always.
+    add_custom_command(
+      TARGET ${fq_target_name}
+      POST_BUILD
+      COMMAND ${CMAKE_COMMAND} -E echo ${msg}
+    )
+    return()
+  endif()
+
   add_executable(
     ${fq_target_name}
     EXCLUDE_FROM_ALL
@@ -212,8 +230,6 @@
       ${LIBC_BUILD_DIR}/include
   )
 
-  get_fq_deps_list(fq_deps_list ${LIBC_FUZZER_DEPENDS})
-  get_object_files_for_test(link_object_files ${fq_deps_list})
   target_link_libraries(${fq_target_name} PRIVATE ${link_object_files})
 
   set_target_properties(${fq_target_name}