1 files changed, 51 insertions, 0 deletions
diff --git a/scripts/check-exports.sh b/scripts/check-exports.sh
new file mode 100755
index 0000000..2b7dcad
--- /dev/null
+++ b/scripts/check-exports.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# ---HELP---
+# check if exported symbols match up with header content and the shared object symbol table
+# Must be run from rtrlibs root dir.
+# ---HELP---
+
+SO_SYMBOL_WHITELIST=(__bss_start _edata _end _fini _init __gcov_master __gcov_sort_n_vals __gcov_var)
+
+ERROR=0
+
+# Functions annoted with RTRLIB_EXPORT
+EXPORTS=$(
+    ctags -x --c-kinds=fp $(find rtrlib -iname '*.c' ! -name '*tommy*') |
+    grep  'RTRLIB_EXPORT' | awk '{ print $1 }' |
+    sort)
+
+# Functions found in public headers
+HEADER_SYMBOLS=$(
+    ctags -x --c-kinds=fp  $(find rtrlib -iname '*.h' -type f ! -name '*_private.h' ! -name '*tommy*') |
+    awk '{ print $1 }' |
+    sort)
+
+# Symbols found in librtrs dynamic export table
+SO_SYMBOLS=$(nm -g --defined-only librtr.so | awk '{ print $3 }' | sort)
+
+# Filter known false positives in dynamic symbol table
+for symbol in "${SO_SYMBOL_WHITELIST[@]}"; do
+    SO_SYMBOLS=$(echo "${SO_SYMBOLS}" | grep -v "^${symbol}\$")
+done
+
+# check for equality of $EXPORTS AND $HEADER_SYMBOLS
+diff -q <(echo "$EXPORTS") <(echo "$HEADER_SYMBOLS") > /dev/null
+if [[ $? -ne 0 ]]; then
+    echo "Functions annotated for export are not equal to functions found in public header!"
+    comm <(echo "$EXPORTS") <(echo "$HEADER_SYMBOLS")
+    ERROR=1
+fi
+
+echo
+
+# check for equality of $HEADER_SYMBOLS and $SO_SYMBOLS
+diff -q <(echo "$HEADER_SYMBOLS") <(echo "$SO_SYMBOLS") > /dev/null
+if [[ $? -ne 0 ]]; then
+    echo "Functions found in public header are not equal to exported functions!"
+    comm <(echo "$HEADER_SYMBOLS") <(echo "$SO_SYMBOLS")
+    ERROR=1
+fi
+
+
+exit $ERROR