We have NFS mounted drives.
I first build an clang/llvm hosted compiler for Mips linux using the
clang/llvm linux x86 compiler.
Call this clang1.
then in directory recurse on Mips host, I place this clang1 compiler and
build clang2.
then i rename recurse to recurse1 and create a new recurse directory.
in recurse I copy clang2 from recurse1 to a recurse but name it clang1.
then i build recurse2 again in directory recurse on the mips host (this
time it was built with the second generation clang/llvm).
then use find to diff all the .o files
rkotler at mipsswbrd002:~/slave/recurse2be/build$ find . -name "*.o"
-exec
cmp '{}' /home/rkotler/slave1/recurse2be/build/'{}' \; |&
tee foo.txt
./lib/Support/Release+Asserts/CommandLine.o
/home/rkotler/slave1/recurse2be/build/./lib/Support/Release+Asserts/CommandLine.o
differ: char 59791, line 147
rkotler at mipsswbrd002:~/slave/recurse2be/build$
This one difference is a time stamp.
kotler at mipsswbrd002:~/slave/recurse2be/build$ diff 1 2
2c2
< ./lib/Support/Release+Asserts/CommandLine.o: file format
elf32-tradbigmips
---
>
/home/rkotler/slave1/recurse2be/build/lib/Support/Release+Asserts/CommandLine.o:
file format elf32-tradbigmips
3956,3957c3956,3957
< 0e4b0 8e22000c 1000000c 00000000 3c01393a ."..........<.9:
< 0e4c0 3c033231 34213330 34633a35 a8410004 <.214!304c:5.A..
---
> 0e4b0 8e22000c 1000000c 00000000 3c01383a ."..........<.8:
> 0e4c0 3c033138 34213135 34633a30 a8410004 <.184!154c:0.A..
6838,6839c6838,6839
< 16d0 41707220 20332032 30313400 20280032 Apr 3 2014. (.2
< 16e0 313a3539 3a333000 292e0a00 20204465 1:59:30.)... De
---
> 16d0 41707220 20322032 30313400 20280031 Apr 2 2014. (.1
> 16e0 383a3038 3a313500 292e0a00 20204465 8:08:15.)... De
rkotler at mipsswbrd002:~/slave/recurse2be/build$
> then i build [clang2] again in directory recurse on the mips host (this..... On 04/04/2014 07:10 AM, reed kotler wrote:> We have NFS mounted drives. > > I first build an clang/llvm hosted compiler for Mips linux using the > clang/llvm linux x86 compiler. > Call this clang1. > > then in directory recurse on Mips host, I place this clang1 compiler and > build clang2. > > then i rename recurse to recurse1 and create a new recurse directory. > > in recurse I copy clang2 from recurse1 to a recurse but name it clang1. > > then i build recurse2 again in directory recurse on the mips host (this > time it was built with the second generation clang/llvm). > > then use find to diff all the .o files > > rkotler at mipsswbrd002:~/slave/recurse2be/build$ find . -name "*.o" -exec > cmp '{}' /home/rkotler/slave1/recurse2be/build/'{}' \; |& tee foo.txt > ./lib/Support/Release+Asserts/CommandLine.o > /home/rkotler/slave1/recurse2be/build/./lib/Support/Release+Asserts/CommandLine.o > differ: char 59791, line 147 > rkotler at mipsswbrd002:~/slave/recurse2be/build$ > > > This one difference is a time stamp. > > kotler at mipsswbrd002:~/slave/recurse2be/build$ diff 1 2 > 2c2 > < ./lib/Support/Release+Asserts/CommandLine.o: file format > elf32-tradbigmips > --- > > > /home/rkotler/slave1/recurse2be/build/lib/Support/Release+Asserts/CommandLine.o: > file format elf32-tradbigmips > 3956,3957c3956,3957 > < 0e4b0 8e22000c 1000000c 00000000 3c01393a ."..........<.9: > < 0e4c0 3c033231 34213330 34633a35 a8410004 <.214!304c:5.A.. > --- > > 0e4b0 8e22000c 1000000c 00000000 3c01383a ."..........<.8: > > 0e4c0 3c033138 34213135 34633a30 a8410004 <.184!154c:0.A.. > 6838,6839c6838,6839 > < 16d0 41707220 20332032 30313400 20280032 Apr 3 2014. (.2 > < 16e0 313a3539 3a333000 292e0a00 20204465 1:59:30.)... De > --- > > 16d0 41707220 20322032 30313400 20280031 Apr 2 2014. (.1 > > 16e0 383a3038 3a313500 292e0a00 20204465 8:08:15.)... De > rkotler at mipsswbrd002:~/slave/recurse2be/build$
if you don't enable time stamps, then the difference will go away
in CommandLine.cpp
#if (ENABLE_TIMESTAMPS == 1)
<< " Built " << __DATE__ << " ("
<< __TIME__ << ").\n"
#endif
On 04/04/2014 07:28 AM, Reed Kotler wrote:>
> > then i build [clang2] again in directory recurse on the mips host
(this
> .....
>
> On 04/04/2014 07:10 AM, reed kotler wrote:
>> We have NFS mounted drives.
>>
>> I first build an clang/llvm hosted compiler for Mips linux using the
>> clang/llvm linux x86 compiler.
>> Call this clang1.
>>
>> then in directory recurse on Mips host, I place this clang1 compiler
and
>> build clang2.
>>
>> then i rename recurse to recurse1 and create a new recurse directory.
>>
>> in recurse I copy clang2 from recurse1 to a recurse but name it clang1.
>>
>> then i build recurse2 again in directory recurse on the mips host (this
>> time it was built with the second generation clang/llvm).
>>
>> then use find to diff all the .o files
>>
>> rkotler at mipsswbrd002:~/slave/recurse2be/build$ find . -name
"*.o" -exec
>> cmp '{}' /home/rkotler/slave1/recurse2be/build/'{}' \;
|& tee foo.txt
>> ./lib/Support/Release+Asserts/CommandLine.o
>>
/home/rkotler/slave1/recurse2be/build/./lib/Support/Release+Asserts/CommandLine.o
>>
>> differ: char 59791, line 147
>> rkotler at mipsswbrd002:~/slave/recurse2be/build$
>>
>>
>> This one difference is a time stamp.
>>
>> kotler at mipsswbrd002:~/slave/recurse2be/build$ diff 1 2
>> 2c2
>> < ./lib/Support/Release+Asserts/CommandLine.o: file format
>> elf32-tradbigmips
>> ---
>> >
>>
/home/rkotler/slave1/recurse2be/build/lib/Support/Release+Asserts/CommandLine.o:
>>
>> file format elf32-tradbigmips
>> 3956,3957c3956,3957
>> < 0e4b0 8e22000c 1000000c 00000000 3c01393a
."..........<.9:
>> < 0e4c0 3c033231 34213330 34633a35 a8410004 <.214!304c:5.A..
>> ---
>> > 0e4b0 8e22000c 1000000c 00000000 3c01383a
."..........<.8:
>> > 0e4c0 3c033138 34213135 34633a30 a8410004 <.184!154c:0.A..
>> 6838,6839c6838,6839
>> < 16d0 41707220 20332032 30313400 20280032 Apr 3 2014. (.2
>> < 16e0 313a3539 3a333000 292e0a00 20204465 1:59:30.)... De
>> ---
>> > 16d0 41707220 20322032 30313400 20280031 Apr 2 2014. (.1
>> > 16e0 383a3038 3a313500 292e0a00 20204465 8:08:15.)... De
>> rkotler at mipsswbrd002:~/slave/recurse2be/build$