http://gcc.gnu.org/install/specific.html maybe should mention memory settings for OpenBSD

[Jay K <jay.krell@cornell.edu>]

Possibly a note for:


http://gcc.gnu.org/install/specific.html
under OpenBSD.


or just for the mail archives:


Building a *slight* fork of 4.5.1 on OpenBSD/x86 4.7 I hit


gcc -c  -g -O2 -static -DIN_GCC   -W -Wall -Wwrite-strings \
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute   \
-DHAVE_CONFIG_H -I. -I. -I../../gcc-4.5/gcc -I../../gcc-4.5/gcc/. \
-I../../gcc-4.5/gcc/../include -I../../gcc-4.5/gcc/../libcpp/include \
-I/home/jay/dev2/cm3/m3-sys/m3cc/I386_OPENBSD/./gmp \
-I/home/jay/dev2/cm3/m3-sys/m3cc/gcc-4.5/gmp \
-I/home/jay/dev2/cm3/m3-sys/m3cc/I386_OPENBSD/./mpfr \
-I/home/jay/dev2/cm3/m3-sys/m3cc/gcc-4.5/mpfr \
-I/home/jay/dev2/cm3/m3-sys/m3cc/gcc-4.5/mpc/src \
-I../../gcc-4.5/gcc/../libdecnumber \
-I../../gcc-4.5/gcc/../libdecnumber/dpd -I../libdecnumber \
-I/usr/local/include insn-attrtab.c -o insn-attrtab.o


cc1: out of memory allocating 304988696 bytes after a total of 0 bytes
gmake: *** [insn-attrtab.o] Error 1


This was not a problem with 4.3.0 or 4.3.5. I don't know about 4.4.x.
We skipped them, just because we are slow and lagging.
 

I couldn't get ulimit to do anything as non-root. I do have swap.


I changed these from 512 to 768, probably not all of them necessary:


# pwd
/etc
# grep 768 login.conf                                                          
        :datasize-max=768M:\
        :datasize-cur=768M:\
        :datasize-cur=768M:\


and then I can proceed.


System probably doesn't have much RAM, maybe only 512MB, so that
could be where the previous values came from. I had never touched them.


Smaller amounts of RAM seem "more normal" these days to pack
more virtual machines onto one physical system.
(Though this just an old laptop, not a virtual machine.)


 - Jay