Make GCC compiler flags default to -O

[cln.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index f0ccf99f0fc1c7cf898230bb02b9c840ad2e6ca7..a4f271429faae3d4312c9c5aad16de71f92ef05c 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -11,31 +11,36 @@ $ make install
 You need GNU make. On HP-UX, you also need GNU sed.
 
 Known to work with:
-  - Linux/x86, gcc-2.7.0, gcc-2.7.2, gcc-2.8.0, egcs-1.1, gcc-2.95
-  - Solaris 2.4 (sparc), gcc-2.7.0, gcc-2.7.2, egcs-1.1, gcc-2.95
-  - OSF/1 V4.0 (alpha), egcs-1.1, gcc-2.95
-  - Irix 5.3, CC 4
-
-The "make" step takes about 4 hours, on a 486 DX / 33 MHz / 8 MB.
-
-On Linux, g++ needs 15 MB to compile the tests. So better have
-17 MB swap space and 1 MB room in $TMPDIR.
-
-If you use gcc and g++ version 2.7.x, don't add -O2 to the CXXFLAGS, because
-"g++ -O" generates better code for libcln.a than "g++ -O2".
-
-If you use g++ version 2.8.x or egcs-2.91.x (a.k.a. egcs-1.1) or gcc-2.95.x,
-I recommend adding "-fno-exceptions" to the CXXFLAGS. This will likely
-generate better code.
-
-If you use g++ version egcs-2.91.x (egcs-1.1) or gcc-2.95.x on Sparc, add
-either "-O", "-O1" or "-O2 -fno-schedule-insns" to the CXXFLAGS. With full 
-"-O2", g++ miscompiles the division routines. Also, if you have g++ version
-egcs-1.1.1 or older on Sparc, you must specify --disable-shared because g++
-would miscompile parts of the library.
-
-On MIPS (SGI Irix 6), pass option "--without-gmp" to configure. gmp does
-not work when compiled in "n32" binary format on Irix.
+  - 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 30 minutes, on a P-III / 1 GHz / 512 MB.
+
+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-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, 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.  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.