From 0f49edf0f3fd055b9adba6d7de8f9c1d92fa472d Mon Sep 17 00:00:00 2001
From: Daniel Bevenius <daniel.bevenius@gmail.com>
Date: Thu, 1 May 2025 10:05:24 +0200
Subject: [PATCH] whisper : add check that target name exists (#3103)

This commit adds a check to makes sure that the target exists before
trying to add compile options to ignore warnings when using MSVC.

The motivation for this is currently the build is broken depending on
the cmake options provided. With this fix it should be possible to build
even if the targets are not actually available.

Refs: https://github.com/ggml-org/whisper.cpp/pull/3090#issuecomment-2842760104
---
 CMakeLists.txt      |  4 +++-
 ggml/CMakeLists.txt | 11 ++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ec750928..fe82c65d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -226,7 +226,9 @@ if (MSVC)
         /wd4996  # Function or variable may be unsafe/deprecated
     )
     function(disable_msvc_warnings target_name)
-        target_compile_options(${target_name} PRIVATE ${MSVC_WARNING_FLAGS})
+        if(TARGET ${target_name})
+            target_compile_options(${target_name} PRIVATE ${MSVC_WARNING_FLAGS})
+        endif()
     endfunction()
 
     if (WHISPER_BUILD_EXAMPLES)
diff --git a/ggml/CMakeLists.txt b/ggml/CMakeLists.txt
index e632af01..b463cbd9 100644
--- a/ggml/CMakeLists.txt
+++ b/ggml/CMakeLists.txt
@@ -368,10 +368,19 @@ if (MSVC)
         /wd4267  # Conversion from 'size_t' to a smaller type, possible loss of data
     )
     function(disable_msvc_warnings target_name)
-        target_compile_options(${target_name} PRIVATE ${MSVC_WARNING_FLAGS})
+        if(TARGET ${target_name})
+            target_compile_options(${target_name} PRIVATE ${MSVC_WARNING_FLAGS})
+        endif()
     endfunction()
 
     disable_msvc_warnings(ggml-base)
     disable_msvc_warnings(ggml)
     disable_msvc_warnings(ggml-cpu)
+    disable_msvc_warnings(ggml-cpu-x64)
+    disable_msvc_warnings(ggml-cpu-sse42)
+    disable_msvc_warnings(ggml-cpu-sandybridge)
+    disable_msvc_warnings(ggml-cpu-haswell)
+    disable_msvc_warnings(ggml-cpu-skylakex)
+    disable_msvc_warnings(ggml-cpu-icelake)
+    disable_msvc_warnings(ggml-cpu-alderlake)
 endif()