From: Benjamin Barenblat <bbaren@mit.edu
Description: Export fewer symbols
Origin: upstream, https://github.com/urweb/urweb/commit/06cb0a88e1df0d4c84427786a9d04f7a75856854
Bug: https://github.com/urweb/urweb/issues/43
--- a/src/c/Makefile.am
+++ b/src/c/Makefile.am
@@ -7,10 +7,15 @@ liburweb_fastcgi_la_SOURCES = fastcgi.c
 liburweb_static_la_SOURCES = static.c
 
 AM_CPPFLAGS = -I$(srcdir)/../../include/urweb $(OPENSSL_INCLUDES)
-AM_CFLAGS = -Wimplicit -Wall -Werror -Wno-deprecated-declarations $(PTHREAD_CFLAGS)
-liburweb_la_LDFLAGS = $(AM_LDFLAGS) $(OPENSSL_LDFLAGS)
+AM_CFLAGS = -Wimplicit -Wall -Werror -Wno-format-security -Wno-deprecated-declarations -U_FORTIFY_SOURCE $(PTHREAD_CFLAGS)
+liburweb_la_LDFLAGS = $(AM_LDFLAGS) $(OPENSSL_LDFLAGS) \
+	-export-symbols-regex '^(client_pruner|pthread_create_big|strcmp_nullsafe|uw_.*)'
 liburweb_la_LIBADD = $(PTHREAD_LIBS) -lm $(OPENSSL_LIBS)
 liburweb_http_la_LIBADD = liburweb.la
+liburweb_http_la_LDFLAGS = -export-symbols-regex '^(main|uw_.*)'
 liburweb_cgi_la_LIBADD = liburweb.la
+liburweb_cgi_la_LDFLAGS = -export-symbols-regex '^(main|uw_.*)'
 liburweb_fastcgi_la_LIBADD = liburweb.la
+liburweb_fastcgi_la_LDFLAGS = -export-symbols-regex '^(main|uw_.*)'
 liburweb_static_la_LIBADD = liburweb.la
+liburweb_static_la_LDFLAGS = -export-symbols-regex '^(main|uw_.*)'