[libpng16] Imported from libpng-1.6.17beta04.tar
diff --git a/INSTALL b/INSTALL
index 61ea591..0e75307 100644
--- a/INSTALL
+++ b/INSTALL
@@ -17,7 +17,7 @@
XII. Configuring for compiler xxx:
XIII. Removing unwanted object code
XIV. Changes to the build and configuration of libpng in libpng-1.5.x
- XV. Configuring libpng for multiprocessing
+ XV. Setjmp/longjmp issues
XVI. Other sources of information about libpng
I. Simple installation
@@ -362,7 +362,7 @@
libpng, because than the settings would not accurately reflect the settings
that were used to build libpng.
-XV. Configuring libpng for multiprocessing
+XV. Setjmp/longjmp issues
Libpng uses setjmp()/longjmp() for error handling. Unfortunately setjmp()
is known to be not thread-safe on some platforms and we don't know of
@@ -375,6 +375,11 @@
in your pnglibconf.h or pngusr.h.
+Starting with libpng-1.6.0, the library included a "simplified API".
+This requires setjmp/longjmp, so you must either build the library
+with PNG_SETJMP_SUPPORTED defined, or with PNG_SIMPLIFIED_READ_SUPPORTED
+and PNG_SIMPLIFIED_WRITE_SUPPORTED undefined.
+
XVI. Other sources of information about libpng:
Further information can be found in the README and libpng-manual.txt
