From 61714724117cd25afd935a3bab836b13e90b763c Mon Sep 17 00:00:00 2001
From: Evan Miller <emmiller@gmail.com>
Date: Fri, 14 Aug 2020 00:12:07 -0400
Subject: [PATCH] Change -Bsymbolic-functions to -Wl,-Bsymbolic-functions

---
 configure.ac         | 12 ++++++++++++
 src/odbc/Makefile.am |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 44d9f29..2526918 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,6 +100,7 @@ if test "$with_iodbc"; then
 	HAVE_ODBC=true
 	ODBC_CFLAGS=$(iodbc-config --prefix="$with_iodbc" --cflags)
 	ODBC_LIBS=$(iodbc-config --prefix="$with_iodbc" --libs)
+	ODBC_LDFLAGS=""
 	CFLAGS="$CFLAGS -DIODBC"
 
 	OLDLDFLAGS=$LDFLAGS
@@ -128,6 +129,16 @@ if test "$with_unixodbc"; then
 	AC_CHECK_LIB(odbcinst, SQLGetPrivateProfileString, [ODBC_LIBS="$ODBC_LIBS -lodbcinst"],
                  AC_MSG_ERROR([Could not find SQLGetPrivateProfileString in -lodbcinst]))
 	LDFLAGS=$OLDLDFLAGS
+
+	OLDLDFLAGS=$LDFLAGS
+	LDFLAGS="$LDFLAGS -Wl,-Bsymbolic-functions"
+	AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
+	AC_TRY_LINK([], [return 0],
+				[AC_MSG_RESULT(yes)
+				ODBC_LDFLAGS="-Wl,-Bsymbolic-functions"],
+				[AC_MSG_RESULT(no)
+				ODBC_LDFLAGS=""])
+	LDFLAGS=$OLDLDFLAGS
 fi
 
 if test "x$HAVE_ODBC" = "xtrue"; then
@@ -139,6 +150,7 @@ if test "x$HAVE_ODBC" = "xtrue"; then
 
 	AC_SUBST(ODBC_CFLAGS)
 	AC_SUBST(ODBC_LIBS)
+	AC_SUBST(ODBC_LDFLAGS)
 	OPTDIRS="$OPTDIRS odbc"
 fi
 
diff --git a/src/odbc/Makefile.am b/src/odbc/Makefile.am
index 78558ae..48d322c 100644
--- a/src/odbc/Makefile.am
+++ b/src/odbc/Makefile.am
@@ -4,7 +4,7 @@ lib_LTLIBRARIES	=	libmdbodbc.la
 AM_CFLAGS	=	-I$(top_srcdir)/include $(GLIB_CFLAGS) $(ODBC_CFLAGS)
 libmdbodbc_la_SOURCES	= odbc.c connectparams.c
 libmdbodbc_la_LIBADD	= ../libmdb/libmdb.la ../sql/libmdbsql.la $(ODBC_LIBS)
-libmdbodbc_la_LDFLAGS	= -avoid-version -export-symbols-regex '^(SQL|ODBCINST)' -Bsymbolic-functions
+libmdbodbc_la_LDFLAGS	= -avoid-version -export-symbols-regex '^(SQL|ODBCINST)' $(ODBC_LDFLAGS)
 if FAKE_GLIB
 libmdbodbc_la_SOURCES += ../libmdb/fakeglib.c
 endif