diff --git a/crypto777/jpeg/unix/jmemname.c b/crypto777/jpeg/unix/jmemname.c
index 3c6f58f18..5fa4313b9 100644
--- a/crypto777/jpeg/unix/jmemname.c
+++ b/crypto777/jpeg/unix/jmemname.c
@@ -128,7 +128,7 @@ select_file_name (char * fname)
 {
   next_file_num++;		/* advance counter */
   sprintf(fname, TEMP_FILE_NAME, TEMP_DIRECTORY, next_file_num);
-  mktemp(fname);		/* make sure file name is unique */
+  mkstemp(fname);		/* make sure file name is unique */
   /* mktemp replaces the trailing XXXXXX with a unique string of characters */
 }
 
diff --git a/iguana/m_osx b/iguana/m_osx
index 5aa8b2b7d..b4b650e9d 100755
--- a/iguana/m_osx
+++ b/iguana/m_osx
@@ -1 +1 @@
-gcc -Wno-deprecated  -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lm
+gcc -Wno-deprecated  -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lpthread -lm
diff --git a/iguana/m_unix b/iguana/m_unix
index 390a2c591..8acb60c03 100755
--- a/iguana/m_unix
+++ b/iguana/m_unix
@@ -1 +1 @@
-gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lm
+gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lpthread -lm
diff --git a/iguana/m_win32 b/iguana/m_win32
index e3e0899f6..e45cfad34 100755
--- a/iguana/m_win32
+++ b/iguana/m_win32
@@ -1 +1 @@
-echo do equivalent of: gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lm
+echo do equivalent of: gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lpthread -lm
diff --git a/iguana/m_win64 b/iguana/m_win64
index e3e0899f6..e45cfad34 100755
--- a/iguana/m_win64
+++ b/iguana/m_win64
@@ -1 +1 @@
-echo do equivalent of: gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lm
+echo do equivalent of: gcc -o ../agents/iguana -O2 *.c ../agents/libcrypto777.a -lssl -lcrypto -lpthread -lm