actions: add step for checking miral and miroil symbols map

.github/workflows/symbols-check.yml

@@ -0,0 +1,48 @@
+name: Symbols Check
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.number && format('pr{0}', github.event.number) || github.ref_name }}
+  cancel-in-progress: true
+
+jobs:
+  Run:
+    runs-on: ubuntu-latest
+
+    timeout-minutes: 10
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+        with:
+          # So we can determine the merge base
+          fetch-depth: 0
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get build-dep ./
+
+      - name: Configure
+        run: >
+          cmake -B build ${{ github.workspace }}
+
+      - name: Install clang
+        run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x llvm.sh
+          sudo ./llvm.sh 19
+          echo "MIR_SYMBOLS_MAP_GENERATOR_CLANG_SO_PATH=/usr/lib/llvm-19/lib/libclang.so.1" >> $GITHUB_ENV
+          echo "MIR_SYMBOLS_MAP_GENERATOR_CLANG_LIBRARY_PATH=/usr/lib/llvm-19/lib" >> $GITHUB_ENV
+
+      - name: Check miral symbols
+        run: |
+          cmake --build build --target check-miral-symbols-map
+
+      - name: Check miroil symbols
+        run: |
+          cmake --build build --target check-miroil-symbols-map

src/miral/CMakeLists.txt

@@ -153,6 +153,17 @@ add_custom_target(
             --output-symbols
         WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}")
 
+add_custom_target(
+        check-miral-symbols-map
+        COMMAND ${PROJECT_SOURCE_DIR}/tools/symbols_map_generator/run.sh
+        --library-name miral
+        --version ${MIRAL_VERSION}
+        --symbols-map-path="${CMAKE_CURRENT_SOURCE_DIR}/symbols.map"
+        --external-headers-directory="${PROJECT_SOURCE_DIR}/include/miral"
+        --include-dirs "$<JOIN:$<TARGET_PROPERTY:miral,INCLUDE_DIRECTORIES>,:>"
+        --diff
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}")
+
 configure_file(
     ${CMAKE_CURRENT_SOURCE_DIR}/miral.pc.in
     ${CMAKE_CURRENT_BINARY_DIR}/miral.pc

src/miroil/CMakeLists.txt

@@ -100,6 +100,17 @@ add_custom_target(
         --output-symbols
         WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}")
 
+add_custom_target(
+        check-miroil-symbols-map
+        COMMAND ${PROJECT_SOURCE_DIR}/tools/symbols_map_generator/run.sh
+        --library-name miroil
+        --version ${MIROIL_VERSION}
+        --symbols-map-path="${CMAKE_CURRENT_SOURCE_DIR}/symbols.map"
+        --external-headers-directory="${PROJECT_SOURCE_DIR}/include/miroil"
+        --include-dirs "$<JOIN:$<TARGET_PROPERTY:miroil,INCLUDE_DIRECTORIES>,:>"
+        --diff
+        WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}")
+
 install(TARGETS     miroil                           LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
 install(DIRECTORY   ${CMAKE_SOURCE_DIR}/include/miroil       DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
 install(FILES       ${CMAKE_CURRENT_BINARY_DIR}/miroil.pc    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")

tools/symbols_map_generator/main.py

@@ -259,14 +259,14 @@ def get_added_symbols(previous_symbols: list[Symbol], new_symbols: set[str], is_
     return added_symbols
 
 
-def print_symbols_diff(previous_symbols: list[Symbol], new_symbols: set[str], is_internal: bool):
+def report_symbols_diff(previous_symbols: list[Symbol], new_symbols: set[str], is_internal: bool):
     """
     Prints the diff between the previous symbols and the new symbols.
     """
     added_symbols = get_added_symbols(previous_symbols, new_symbols, is_internal)
 
     print("")
-    print("\033[1mNew Symbols 🟢🟢🟢\033[0m")
+    print("  \033[1mNew Symbols 🟢🟢🟢\033[0m")
     for s in added_symbols:
         print(f"\033[92m    {s}\033[0m")
 
@@ -280,10 +280,12 @@ def print_symbols_diff(previous_symbols: list[Symbol], new_symbols: set[str], is
     deleted_symbols.sort()
 
     print("")
-    print("\033[1mDeleted Symbols 🔻🔻🔻\033[0m")
+    print("  \033[1mDeleted Symbols 🔻🔻🔻\033[0m")
     for s in deleted_symbols:
         print(f"\033[91m    {s}\033[0m")
 
+    return len(deleted_symbols) > 0 or len(added_symbols) > 0
+
 
 def main():
     parser = argparse.ArgumentParser(description="This tool parses the header files of a provided in the Mir project "
@@ -327,6 +329,12 @@ def main():
 
     args = parser.parse_args()
     logging.basicConfig(level=logging.INFO)
+
+    if args.output_symbols:
+        _logger.info("symbols_map_generator is running in 'output symbols' mode")
+
+    if args.diff:
+        _logger.info("symbols_map_generator is running in 'diff' mode")
 
     # Point libclang to a file on the system
     if 'MIR_SYMBOLS_MAP_GENERATOR_CLANG_SO_PATH' in os.environ:
@@ -377,9 +385,14 @@ def main():
 
     previous_symbols = read_symbols_from_file(args.symbols_map_path, library)
 
+    has_changed_symbols = False
     if args.diff:
-        print_symbols_diff(previous_symbols, external_symbols, False)
-        print_symbols_diff(previous_symbols, internal_symbols, True)
+        print("External Symbols Diff:")
+        has_changed_symbols = report_symbols_diff(previous_symbols, external_symbols, False)
+
+        print("")
+        print("Internal Symbols Diff:")
+        has_changed_symbols = has_changed_symbols or report_symbols_diff(previous_symbols, internal_symbols, True)
         print("")
 
     if args.output_symbols:
@@ -466,8 +479,10 @@ def main():
 
                 f.write(output_str)
 
-
-    exit(0)
+    if has_changed_symbols:
+        exit(1)
+    else:
+        exit(0)