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From: "Jay K (jayk123 AT hotmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>

To: "djgpp AT delorie DOT com" <djgpp AT delorie DOT com>

Subject: command line lenght problems?

Thread-Topic: command line lenght problems?

Thread-Index: AQHYEpnRXSjHXVVzUE2FW6vK8tBa7g==

Date: Wed, 26 Jan 2022 09:53:31 +0000

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--_000_MWHPR1401MB1951CCC95276E44447921D28E6209MWHPR1401MB1951_
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Hi folks.

I am trying to port my program to MS-DOS. For fun, granted.
I figured DJGPP would help.
Esp. because it seems to have a useful "sigalarm" functionality,
I might use to implement preemptive threads.
I have a prototype that suggests that will work:
 https://github.com/modula3/cm3/blob/3be819ed8e2fa60885aff0cb6278934a17b307=
02/m3-libs/m3core/src/thread/POSIX/test_dos_threads.cpp

The rest of the Posix support helps also.
 I'm not sure about network/sockets, maybe give up.

I have experimented with a few "DOS"s.
 FreeDOS, DosBos-X, 32bit Windows 10 VM.

They all have advantages and disadvantages.

Granted I could spend more time configuring each and none is "really" MS-DO=
S.

My program is a compiler, that produces .cpp files and would run g++ or gxx=
, etc.
  (I might experiment with e.g. OpenWatcom, might, like if it can link the =
djpp libraries.)

I am seeing, I guess, command line length limitations.

gcc and collect2 crash, but if I run them manually with shorter equivalent-=
enough commands, they work.

Advise?

I tried trimming environment. That didn't help.
I tried running bash, thinking within there, maybe Djgpp would use
its technique to transfer command lines otherwise, but bash won't start.

bash:
---------------------------
16 bit MS-DOS Subsystem
---------------------------
Administrator: C:\Windows\system32\cmd.exe
NTVDM has encountered a System Error
NTVDM has encountered a System Error 4001h Choose 'Close' to terminate the =
application.
---------------------------
Close   Ignore
---------------------------


C:\dos>type 1.c
#include <stdio.h>
int main()
{
printf("hello\n");
}

C:\dos>gcc -v -c 1.c
Using built-in specs.
COLLECT_GCC=3Dc:/dos/bin/gcc.exe
Target: djgpp
Configured with: /gcc-9.30/configure djgpp --prefix=3D/dev/env/DJDIR --disa=
ble-werror --enable-languages=3Dc,c++,fortran,objc,obj-c++,ada --with-gcc-m=
ajor-version-only --enable-libquadmath-support --enable-lto --disable-libst=
dcxx-pch --enable-libstdcxx-filesystem-ts
Thread model: single
gcc version 9.3.0 (GCC)
COLLECT_GCC_OPTIONS=3D'-v' '-c' '-mtune=3Dpentium' '-march=3Dpentium'
 c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -quiet -v -iprefix c:/dos/bin/..=
/lib/gcc/djgpp/9/ -remap 1.c -quiet -dumpbase 1.c -mtune=3Dpentium -march=
=3Dpentium -auxbase 1 -version -o c:/dos/tmp/cczF3Ew0.s
Exiting due to signal SIGSEGV
Stack Fault at eip=3D00000a11
eax=3D00010001 ebx=3D01ad0080 ecx=3D01549400 edx=3D004207bf esi=3D00001223 =
edi=3D00001213
ebp=3D0042773a esp=3D0042773a program=3DC:\DOS\BIN\GCC.EXE
cs: sel=3D00cf  base=3D000d3a50  limit=3D00000db0
ds: sel=3D00b7  base=3D000cc160  limit=3D0000ffff
es: sel=3D0040  invalid
fs: sel=3D0000
gs: sel=3D0000
ss: sel=3D00b7  base=3D000cc160  limit=3D0000ffff
App stack: [00423b78..00223b7c]  Exceptn stack: [00223ac8..00221b88]



C:\dos> c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -quiet -v -iprefix c:/dos=
/bin/../lib/gcc/djgpp/9/ -remap 1.c -quiet -dumpbase 1.c -mtune=3Dpentium -=
march=3Dpentium -auxbase 1 -version -o c:/dos/tmp/cczF3Ew0.s
The system cannot execute the specified program.


c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -iprefix c:/dos/bin/../lib/gcc/dj=
gpp/9/ -remap 1.c -quiet -dumpbase 1.c -o 1.s

=3D> success

as 1.s

 =3D> success

C:\dos>gcc 1.o -v
...

208 characters:
c:/dos/bin/../libexec/gcc/djgpp/9/collect2.exe c:/dos/lib/crt0.o -Lc:/dos/b=
in/../lib/gcc/djgpp/9 -Lc:/dos/bin/../lib/gcc -Lc:/dos/lib -Lc:/dos/bin/../=
lib/gcc/djgpp/9/../../.. -Lc:/dos/lib 1.o -lgcc -lc -lgcc

Exiting due to signal SIGSEGV
Stack Fault at eip=3D00000a11
eax=3D00010001 ebx=3D001c0080 ecx=3D001804

90 characters:
ld.exe c:/dos/lib/crt0.o 1.o -lgcc -lc -Lc:/dos/lib/gcc/djgpp/9 -Lc:/dos/li=
b -o a.exe

 =3D> success

.\a.exe

=3D> success


Suggestions?
I mean, worst case, I will run:

C:\dos>gcc --print-prog-name ld
c:/dos/bin/ld.exe

C:\dos>gcc --print-prog-name cc1
c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe

and run things more manually "like" that, with response files.

I had to reinvent the compiler driver though, it hides things so well.
I suppose I could run gcc directly with -v, capture the command lines,
change them to use response files and rerun them "verbatim", thereby
preserving the compiler driver.

Can/should the gcc driver handle this more automatically itself?

Thank you,
 - Jay

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<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Hi folks.
<div><br>
</div>
<div>I am trying to port my program to MS-DOS. For fun, granted.</div>
<div>I figured DJGPP would help.</div>
<div>Esp. because it seems to have a useful &quot;sigalarm&quot; functional=
ity,</div>
<div>I might use to implement preemptive threads.</div>
<div>I have a prototype that suggests that will work:</div>
<div>&nbsp;https://github.com/modula3/cm3/blob/3be819ed8e2fa60885aff0cb6278=
934a17b30702/m3-libs/m3core/src/thread/POSIX/test_dos_threads.cpp</div>
<div><br>
</div>
<div>The rest of the Posix support helps also.</div>
<div>&nbsp;I'm not sure about network/sockets, maybe give up.</div>
<div><br>
</div>
<div>I have experimented with a few &quot;DOS&quot;s.</div>
<div>&nbsp;FreeDOS, DosBos-X, 32bit Windows 10 VM.</div>
<div><br>
</div>
<div>They all have advantages and disadvantages.</div>
<div><br>
</div>
<div>Granted I could spend more time configuring each and none is &quot;rea=
lly&quot; MS-DOS.</div>
<div><br>
</div>
<div>My program is a compiler, that produces .cpp files and would run g++ o=
r gxx, etc.</div>
<div>&nbsp; (I might experiment with e.g. OpenWatcom, might, like if it can=
 link the djpp libraries.)</div>
<div><br>
</div>
<div>I am seeing, I guess, command line length limitations.</div>
<div><br>
</div>
<div>gcc and collect2 crash, but if I run them manually with shorter equiva=
lent-enough commands, they work.</div>
<div><br>
</div>
<div>Advise?</div>
<div><br>
</div>
<div>I tried trimming environment. That didn't help.</div>
<div>I tried running bash, thinking within there, maybe Djgpp would use</di=
v>
<div>its technique to transfer command lines otherwise, but bash won't star=
t.</div>
<div><br>
</div>
<div>bash:</div>
<div>---------------------------</div>
<div>16 bit MS-DOS Subsystem</div>
<div>---------------------------</div>
<div>Administrator: C:\Windows\system32\cmd.exe</div>
<div>NTVDM has encountered a System Error</div>
<div>NTVDM has encountered a System Error 4001h Choose 'Close' to terminate=
 the application.</div>
<div>---------------------------</div>
<div>Close &nbsp; Ignore &nbsp; </div>
<div>---------------------------</div>
<div><br>
</div>
<div><br>
</div>
<div>C:\dos&gt;type 1.c</div>
<div>#include &lt;stdio.h&gt;</div>
<div>int main()</div>
<div>{</div>
<div>printf(&quot;hello\n&quot;);</div>
<div>}</div>
<div><br>
</div>
<div>C:\dos&gt;gcc -v -c 1.c</div>
<div>Using built-in specs.</div>
<div>COLLECT_GCC=3Dc:/dos/bin/gcc.exe</div>
<div>Target: djgpp</div>
<div>Configured with: /gcc-9.30/configure djgpp --prefix=3D/dev/env/DJDIR -=
-disable-werror --enable-languages=3Dc,c++,fortran,objc,obj-c++,ada --with-=
gcc-major-version-only --enable-libquadmath-support --enable-lto --disable-=
libstdcxx-pch --enable-libstdcxx-filesystem-ts</div>
<div>Thread model: single</div>
<div>gcc version 9.3.0 (GCC)</div>
<div>COLLECT_GCC_OPTIONS=3D'-v' '-c' '-mtune=3Dpentium' '-march=3Dpentium'<=
/div>
<div>&nbsp;c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -quiet -v -iprefix c:/=
dos/bin/../lib/gcc/djgpp/9/ -remap 1.c -quiet -dumpbase 1.c -mtune=3Dpentiu=
m -march=3Dpentium -auxbase 1 -version -o c:/dos/tmp/cczF3Ew0.s</div>
<div>Exiting due to signal SIGSEGV</div>
<div>Stack Fault at eip=3D00000a11</div>
<div>eax=3D00010001 ebx=3D01ad0080 ecx=3D01549400 edx=3D004207bf esi=3D0000=
1223 edi=3D00001213</div>
<div>ebp=3D0042773a esp=3D0042773a program=3DC:\DOS\BIN\GCC.EXE</div>
<div>cs: sel=3D00cf &nbsp;base=3D000d3a50 &nbsp;limit=3D00000db0</div>
<div>ds: sel=3D00b7 &nbsp;base=3D000cc160 &nbsp;limit=3D0000ffff</div>
<div>es: sel=3D0040 &nbsp;invalid</div>
<div>fs: sel=3D0000</div>
<div>gs: sel=3D0000</div>
<div>ss: sel=3D00b7 &nbsp;base=3D000cc160 &nbsp;limit=3D0000ffff</div>
<div>App stack: [00423b78..00223b7c] &nbsp;Exceptn stack: [00223ac8..00221b=
88]</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>C:\dos&gt; c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -quiet -v -iprefi=
x c:/dos/bin/../lib/gcc/djgpp/9/ -remap 1.c -quiet -dumpbase 1.c -mtune=3Dp=
entium -march=3Dpentium -auxbase 1 -version -o c:/dos/tmp/cczF3Ew0.s</div>
<div>The system cannot execute the specified program.</div>
<div><br>
</div>
<div><br>
</div>
<div>c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe -iprefix c:/dos/bin/../lib/g=
cc/djgpp/9/ -remap 1.c -quiet -dumpbase 1.c -o 1.s</div>
<div><br>
</div>
<div>=3D&gt; success</div>
<div><br>
</div>
<div>as 1.s</div>
<div><br>
</div>
<div>&nbsp;=3D&gt; success</div>
<div><br>
</div>
<div>C:\dos&gt;gcc 1.o -v</div>
<div>...</div>
<div><br>
</div>
<div>208 characters:</div>
<div>c:/dos/bin/../libexec/gcc/djgpp/9/collect2.exe c:/dos/lib/crt0.o -Lc:/=
dos/bin/../lib/gcc/djgpp/9 -Lc:/dos/bin/../lib/gcc -Lc:/dos/lib -Lc:/dos/bi=
n/../lib/gcc/djgpp/9/../../.. -Lc:/dos/lib 1.o -lgcc -lc -lgcc</div>
<div><br>
</div>
<div>Exiting due to signal SIGSEGV</div>
<div>Stack Fault at eip=3D00000a11</div>
<div>eax=3D00010001 ebx=3D001c0080 ecx=3D001804</div>
<div><br>
</div>
<div>90 characters:</div>
<div>ld.exe c:/dos/lib/crt0.o 1.o -lgcc -lc -Lc:/dos/lib/gcc/djgpp/9 -Lc:/d=
os/lib -o a.exe</div>
<div><br>
</div>
<div>&nbsp;=3D&gt; success</div>
<div><br>
</div>
<div>.\a.exe</div>
<div><br>
</div>
<div>=3D&gt; success</div>
<div><br>
</div>
<div><br>
</div>
<div>Suggestions?</div>
<div>I mean, worst case, I will run:</div>
<div><br>
</div>
<div>C:\dos&gt;gcc --print-prog-name ld</div>
<div>c:/dos/bin/ld.exe</div>
<div><br>
</div>
<div>C:\dos&gt;gcc --print-prog-name cc1</div>
<div>c:/dos/bin/../libexec/gcc/djgpp/9/cc1.exe</div>
<div><br>
</div>
<div>and run things more manually &quot;like&quot; that, with response file=
s.</div>
<div><br>
</div>
<div>I had to reinvent the compiler driver though, it hides things so well.=
</div>
<div>I suppose I could run gcc directly with -v, capture the command lines,=
</div>
<div>change them to use response files and rerun them &quot;verbatim&quot;,=
 thereby</div>
<div>preserving the compiler driver.</div>
<div><br>
</div>
<div>Can/should the gcc driver handle this more automatically itself?</div>
<div><br>
</div>
<div>Thank you,</div>
<span>&nbsp;- Jay</span><br>
</div>
</body>
</html>

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