cmake: enable compiler warnings for C only

baresip · Jan 14, 2025 · 5f866a9 · 5f866a9
1 parent f929020
commit 5f866a9
Show file tree

Hide file tree

Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -59,7 +59,7 @@ jobs:
 
     - name: cmake
       run: |
-        cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -Werror -DCMAKE_C_FLAGS="-Werror"
+        cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -DCMAKE_C_FLAGS="-Werror" -DCMAKE_CXX_FLAGS="-Werror"
         cmake --build build -t retest
     
     - name: retest

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -63,7 +63,8 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 if(MSVC)
   add_compile_options("/W3")
 else()
-  add_compile_options(
+
+  set(c_flags
     -pedantic
     -Wall
     -Wbad-function-cast
@@ -79,6 +80,10 @@ else()
     -Wuninitialized
     -Wvla
   )
+
+  add_compile_options(
+    "$<$<COMPILE_LANGUAGE:C>:${c_flags}>"
+  )
 endif()
 
 if(CMAKE_C_COMPILER_ID MATCHES "Clang")