Make GCC compiler flags default to -O

[cln.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index 329d20a9d64298a90c9e9e95265d0d94a6d7d093..a4f271429faae3d4312c9c5aad16de71f92ef05c 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -11,29 +11,36 @@ $ make install
 You need GNU make. On HP-UX, you also need GNU sed.
 
 Known to work with:
-  - Linux/x86, gcc-2.95.x, gcc-3.0(pre)
-  - Linux/ia64, gcc-2.96, gcc-3.0(pre)
-  - Linux/arm, gcc-2.95.3
-  - Linux/sparc, gcc-2.95.3
-  - Linux/alpha, gcc-2.95.x
-  - Linux/powerpc, gcc-2.95.x
-  - Solaris 2.4 (sparc), gcc-2.95
-  - OSF/1 V4.0 (alpha), gcc-2.95
-  - Irix 6.5, gcc-2.95.x
+  - Linux/x86, gcc-2.95.x, gcc-3.[0-4]
+  - Linux/x86_64, gcc-3.[3-4]
+  - Linux/ia64, gcc-2.96, gcc-3.[2-3]
+  - Linux/arm, gcc-2.95.3, gcc-3.[0-3]
+  - Linux/mips, gcc-3.3
+  - Linux/sparc, gcc-2.95.3, gcc-3.[1-3]
+  - Linux/alpha, gcc-2.95.x, gcc-3.[0-3]
+  - Linux/powerpc, gcc-2.95.x, gcc-3.[0-3]
+  - Solaris 2.4 (sparc), gcc-2.95, gcc-3.[1-3]
+  - OSF/1 V4.0 (alpha), gcc-2.95, gcc-3.1
+  - Irix 6.5, gcc-2.95.x, gcc-3.0
   - BeOS, gcc-2.95.x
 
-The "make" step takes about 1 hour, on a P-II / 400 MHz / 64 MB.
+The "make" step takes about 30 minutes, on a P-III / 1 GHz / 512 MB.
 
-If you use g++ gcc-2.95.x or gcc-3.0, I recommend adding "-fno-exceptions" 
+If you use g++ gcc-2.95.x or gcc-3.x, I recommend adding "-fno-exceptions" 
 to the CXXFLAGS. This will likely generate better code.
 
-If you use g++ from gcc-2.95.x on Sparc, add either "-O", "-O1" or
+If you use g++ from gcc-3.0.4 or older on Sparc, add either "-O", "-O1" or
 "-O2 -fno-schedule-insns" to the CXXFLAGS. With full "-O2", g++ miscompiles
 the division routines. If you use g++ older than 2.95.3 on Sparc you should
 also specify --disable-shared because of bad code produced in the shared
-library. Also, on OSF/1 or Tru64 using gcc-2.95.x, you should specify
+library. Also, do not use gcc-3.0 on Sparc for compiling CLN, it won't work
+at all.
+
+If you use g++ on OSF/1 or Tru64 using gcc-2.95.x, you should specify
 --disable-shared because of linker problems with duplicate symbols in shared
-libraries.
+libraries.  If you use g++ from gcc-3.0.n with n larger than 1, you should
+not add -fno-exceptions to the CXXFLAGS, since that will generate wrong code
+(gcc-3.1 is okay again, as is gcc-3.0).
 
 More detailed installation instructions can be found in the documentation,
 in the doc/ directory.