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<== Date ==> <== Thread ==>
Subject: EPICS make problem
From: Benjamin Franksen <[email protected]>
To: EPICS Techtalk <[email protected]>
Date: Tue, 7 Mar 2017 15:32:25 +0100 
During development of the sequencer it may happen that the SNL compiler
(snc) crashes with a segmentation fault. With 3.14 this looks like

franksen@tiber: ...test/validate/O.linux-x86 > rm wait.*
franksen@tiber: ...test/validate/O.linux-x86 > make
make -f ../Makefile TOP=../../.. T_A=linux-x86  all
make[1]: Entering directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
perl /home/franksen/src/epics-base/3.14/bin/linux-x86/mkmf.pl -m
wait.st.d  .  ../os/Linux ../os/posix ../os/default ..  wait.i ../wait.st
make[1]: Leaving directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
make[1]: Entering directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
preprocessing ../wait.st
/usr/bin/gcc -x c -E  -D_GNU_SOURCE -D_DEFAULT_SOURCE            -D_X86_
 -DUNIX  -Dlinux   -I. -I../O.Common -I. -I..
-I../../../include/os/Linux -I../../../include
-I/home/franksen/src/epics-base/3.14/include/os/Linux
-I/home/franksen/src/epics-base/3.14/include        ../wait.st > wait.i
compiling wait.i to C
/home/franksen/src/seq/branch-2-3/home/bin/linux-x86/snc   +m  wait.i -o
wait.c.tmp
make[1]: *** [wait.c] Segmentation fault (core dumped)
make[1]: Leaving directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
make: *** [all] Error 2
franksen@tiber: ...test/validate/O.linux-x86 > ll wait.*
-rw-rw-r-- 1 franksen franksen    0 Mär  7 15:14 wait.c.tmp
-rw-rw-r-- 1 franksen franksen 1707 Mär  7 15:14 wait.i
-rw-rw-r-- 1 franksen franksen   84 Mär  7 15:14 wait.st.d


Note the line

make[1]: *** [wait.c] Segmentation fault (core dumped)

in the make output. Now with 3.15:

> rm wait.*
franksen@tiber: ...test/validate/O.linux-x86 > make
make -f ../Makefile TOP=../../.. T_A=linux-x86  all
make[1]: Entering directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
compiling waitfun.i to C
/home/franksen/src/seq/branch-2-3/home/bin/linux-x86/snc   +m  waitfun.i
-o waitfun.c.tmp
preprocessing ../wait.st
/usr/bin/gcc -x c -E  -D_GNU_SOURCE -D_DEFAULT_SOURCE            -D_X86_
 -DUNIX  -Dlinux   -I. -I../O.Common -I. -I. -I..
-I../../../include/compiler/gcc -I../../../include/os/Linux
-I../../../include
-I/home/franksen/src/epics-base/3.15/include/compiler/gcc
-I/home/franksen/src/epics-base/3.15/include/os/Linux
-I/home/franksen/src/epics-base/3.15/include        ../wait.st > wait.i
compiling wait.i to C
/home/franksen/src/seq/branch-2-3/home/bin/linux-x86/snc   +m  wait.i -o
wait.c.tmp
perl -CSD /home/franksen/src/epics-base/3.15/bin/linux-x86/mkmf.pl -m
wait.st.d  .  ../compiler/gcc ../compiler/default .  ../os/Linux
../os/posix ../os/default ..  wait.i ../wait.st
make[1]: Leaving directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
make[1]: Entering directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
compiling waitfun.i to C
/home/franksen/src/seq/branch-2-3/home/bin/linux-x86/snc   +m  waitfun.i
-o waitfun.c.tmp
compiling wait.i to C
/home/franksen/src/seq/branch-2-3/home/bin/linux-x86/snc   +m  wait.i -o
wait.c.tmp
make[1]: Leaving directory
`/home/franksen/src/seq/branch-2-3/home/test/validate/O.linux-x86'
make: *** [all] Error 2
franksen@tiber: ...test/validate/O.linux-x86 > ll wait.*
-rw-rw-r-- 1 franksen franksen    0 Mär  7 15:24 wait.c.tmp
-rw-rw-r-- 1 franksen franksen 1707 Mär  7 15:24 wait.i
-rw-rw-r-- 1 franksen franksen   47 Mär  7 15:24 wait.st.d

Note: nothing about seg faults or dumped cores in the make output here.

I have not the slightest idea what could cause this.

I have checked (a) the environment (b) the MAKEFLAGS and (c) the command
line that invokes snc. They are exactly the same (apart from the
variable EPICS_BASE in the environment).

Cheers
Ben
--
"Make it so they have to reboot after every typo." ― Scott Adams

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Replies:
Re: EPICS make problem Torsten Bögershausen
Re: EPICS make problem Andrew Johnson
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