Add API compatibility check tool

test/check-abi-compatibility.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+if [ "$#" -ne 2 ]; then
+    echo "Usage: $0 old_library.so new_library.so"
+    exit 1
+fi
+
+OLD_LIB=$1
+NEW_LIB=$2
+
+OLD_FUNCS=_old_funcs.txt
+NEW_FUNCS=_new_funcs.txt
+OLD_VARS=_old_vars.txt
+NEW_VARS=_new_vars.txt
+
+# Extract function symbols from the old and new libraries
+nm -C --defined-only $OLD_LIB | c++filt | awk '$2 ~ /[TW]/ {print substr($0, index($0,$3))}' | sort > $OLD_FUNCS
+nm -C --defined-only $NEW_LIB | c++filt | awk '$2 ~ /[TW]/ {print substr($0, index($0,$3))}' | sort > $NEW_FUNCS
+
+# Extract variable symbols from the old and new libraries
+nm -C --defined-only $OLD_LIB | c++filt | awk '$2 ~ /[BDG]/ {print substr($0, index($0,$3))}' | sort > $OLD_VARS
+nm -C --defined-only $NEW_LIB | c++filt | awk '$2 ~ /[BDG]/ {print substr($0, index($0,$3))}' | sort > $NEW_VARS
+
+# Initialize error flag and message
+error_flag=0
+error_message=""
+
+# Check for removed function symbols
+removed_funcs=$(comm -23 $OLD_FUNCS $NEW_FUNCS)
+if [ -n "$removed_funcs" ]; then
+    error_flag=1
+    error_message+="[Removed Functions]\n$removed_funcs\n"
+fi
+
+# Check for removed variable symbols
+removed_vars=$(comm -23 $OLD_VARS $NEW_VARS)
+if [ -n "$removed_vars" ]; then
+    error_flag=1
+    error_message+="[Removed Variables]\n$removed_vars\n"
+fi
+
+# Check for added variable symbols
+added_vars=$(comm -13 $OLD_VARS $NEW_VARS)
+if [ -n "$added_vars" ]; then
+    error_flag=1
+    error_message+="[Added Variables]\n$added_vars\n"
+fi
+
+# Remove temporary files
+rm -f $NEW_FUNCS $OLD_FUNCS $OLD_VARS $NEW_VARS
+
+# Display error messages if any
+if [ "$error_flag" -eq 1 ]; then
+    echo -e "$error_message"
+    echo "ABI compatibility check failed."
+    exit 1
+fi
+
+echo "ABI compatibility check passed: No variable symbols were removed or added, and no function symbols were removed."
+exit 0