[svn-r1108] Changes since 19990225

----------------------

./INSTALL
	Added warnings and a disclaimer about GNU, DEC, Irix64, and NT
	compilers that generate incorrect machine code.

./configure.in
./src/H5private.h
	Detects and includes <sys/param.h> which is needed on FreeBSD
	before <sys/proc.h> even though we only really using anything
	from <sys/proc.h> on the DEC Alpha.

./config/irix64
	Turned off warnings for duplicate definitions from the linker
	because -lnsl on irix has the same stuff in it as -lc.

./config/irix6.x
	Split up the CC and CFLAGS settings like with irix64 so that
	compilers besides `-n32' can be used.

./bin/snapshot
	The snapshots are tagged with names like hdf5-1_1_52 which is
	similar to the way the releases are tagged (cvs doesn't allow
	dots in tags).

./test/dtypes.c
./src/H5private.h
./src/H5Tconv.c
	Fixed some alignment violations on the DEC when using high
	optimization levels. The DEC incorrectly optimizes certain
	memcpy() and memmove() calls when the source argument is not
	word aligned if the call looks like it's copying an atomic
	data type.

./test/hyperslab
	Worked around code generation bugs in the Irix64 Mongoose 7.00
	compiler by casting some `unsigned long' values to `unsigned'
	in an expression.

./src/H5Ocomp.c
	Fixed a place where %d was used to print a size_t.

1 files changed, 33 insertions, 3 deletions

diff --git a/INSTALL b/INSTALL
index 4005e20..633150e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -18,9 +18,39 @@ can do the following:
 
 	$ make install		# Optional
 
-Note:
-For the users of the Intel TFLOPS machine, a special sequence of steps
-for the install may be found in the file:  INSTALL.ascired.
+Note: For the users of the Intel TFLOPS machine, a special sequence of
+steps for the install may be found in the file: INSTALL.ascired.
+
+OUTPUT FROM THE FOLLOWING COMPILERS SHOULD BE EXTREMELY SUSPECT WHEN
+USED TO COMPILE THE HDF5 LIBRARY, ESPECIALLY IF OPTIMIZATIONS ARE
+ENABLED. IN ALL CASES, HDF5 ATTEMPTS TO WORK AROUND THE COMPILER BUGS
+BUT THE HDF5 DEVELOPMENT TEAM MAKES NO GUARANTEES THAT THERE ARE OTHER 
+CODE GENERATION PROBLEMS.
+
+    * GNU (Intel platforms)
+	Versions before 2.8.1 have serious problems allocating
+	registers when functions contain operations on `long long'
+	data types. Supplying the `--disable-hsizet' switch to
+	configure (documented below) will prevent hdf5 from using
+	`long long' data types in situations that are known not to
+	work, but it limits the hdf5 address space to 2GB.
+
+    * DEC
+	The V5.2-038 compiler (and possibly others) occasionally
+	generates incorrect code for memcpy() calls when optimizations
+	are enabled, resulting in unaligned access faults. HDF5 works
+	around the problem by casting the second argument to `char*'.
+
+    * SGI (Irix64 6.2)
+	The Mongoose 7.00 compiler has serious optimization bugs and
+	should be upgraded to MIPSpro 7.2.1.2m. Patches are available
+	from SGI.
+
+    * Windows/NT
+	The MicroSoft Win32 5.0 compiler is unable to cast unsigned
+	long long values to doubles. HDF5 works around this bug by
+	first casting to signed long long and then to double.
+
 
 =======
 Step 0: Install optional third-party packages.