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Diffstat (limited to 'FAQ')
| -rw-r--r-- | FAQ | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/FAQ b/FAQ index 799be81e3f..d412f8e0b8 100644 --- a/FAQ +++ b/FAQ @@ -234,6 +234,9 @@ EGCS and gcc 2.8.1 shows this: Make up your own decision. +GNU CC versions 2.95 and above are derived from egcs, and they may do even +better. + 1.3. When I try to compile glibc I get only error messages. What's wrong? @@ -267,16 +270,8 @@ them. 1.5. Which compiler should I use for powerpc? -{GK} You want to use egcs 1.1 or later (together with the right versions -of all the other tools, of course). - -In fact, egcs 1.1 has a bug that causes linuxthreads to be -miscompiled, resulting in segmentation faults when using condition -variables. There is a temporary patch at: - -<http://discus.anu.edu.au/~geoffk/egcs-3.diff> - -Later versions of egcs may fix this problem. +{GK} You want to use at least gcc 2.95 (together with the right versions +of all the other tools, of course). See also question question 2.8. 1.6. Which tools should I use for ARM? @@ -333,6 +328,9 @@ Binutils 2.9.1.0.16 or later is also required. <yann@plato.uni-paderborn.de> reports 22h48m on Atari TT030 (Motorola 68030 @ 32 Mhz, 34 Mb memory) + A full build of the PowerPC library took 1h on a PowerPC 750@400Mhz w/ + 64MB of RAM, and about 9h on a 601@60Mhz w/ 72Mb. + If you have some more measurements let me know. @@ -784,6 +782,24 @@ newer since we have explicitly add references to the functions causing the problem. But you nevertheless should use EGCS for other reasons (see question 1.2). +{GK} On some Linux distributions for PowerPC, you can see this when you have +built gcc or egcs from the Web sources (gcc versions 2.95 or earlier), then +re-built glibc. This happens because in these versions of gcc, exception +handling is implemented using an older method; the people making the +distributions are a little ahead of their time. + +A quick solution to this is to find the libgcc.a file that came with the +distribution (it would have been installed under /usr/lib/gcc-lib), do +`ar x libgcc.a frame.o' to get the frame.o file out, and add a line saying +`LDLIBS-c.so += frame.o' to the file `configparms' in the directory you're +building in. You can check you've got the right `frame.o' file by running +`nm frame.o' and checking that it has the symbols defined that you're +missing. + +This will let you build glibc with the C compiler. The C++ compiler +will still be binary incompatible with any C++ shared libraries that +you got with your distribution. + 2.9. How can I compile gcc 2.7.2.1 from the gcc source code using glibc 2.x? |