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Build: Fix circular object deps with old GCC 

When both -o and -MT are used, GCC 4.1 prints the object file twice in
the dependency file. e.g.:

foo.o foo.o: foo.c

If the file name is long, then the second occurrence moves to the next
line. e.g.:

ssl/statem/libssl-shlib-statem_dtls.o \
  ssl/statem/libssl-shlib-statem_dtls.o: ../ssl/statem/statem_dtls.c \

add-depends script scans one line at a time, so when the first line is
processed, the object file becomes a dependency itself.

Fix by removing -MT altogether.

This also fixes makedepend for nonstop platform.

Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25455)
This commit is contained in:
Orgad Shaneh 2024-09-12 23:23:46 +03:00 committed by Richard Levitte
parent 27abf142f6
commit 6288aa440c
2 changed files with 3 additions and 6 deletions
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2
Configurations/unix-Makefile.tmpl
View File

@ -1746,7 +1746,7 @@ EOF
} elsif ($makedep_scheme eq 'gcc' && !grep /\.rc$/, @srcs) {
$recipe .= <<"EOF";
$obj: $deps
$cmd $incs $defs $cmdflags -MMD -MF $dep.tmp -MT \$\@ -c -o \$\@ $srcs
$cmd $incs $defs $cmdflags -MMD -MF $dep.tmp -c -o \$\@ $srcs
\@touch $dep.tmp
\@if cmp $dep.tmp $dep > /dev/null 2> /dev/null; then \\
rm -f $dep.tmp; \\

7
NOTES-NONSTOP.md
View File

@ -131,12 +131,9 @@ correctly, you also need the `COMP_ROOT` set, as in:
`COMP_ROOT` needs to be in Windows form.
`Configure` must specify the `no-makedepend` option otherwise errors will
result when running the build because the c99 cross-compiler does not support
the `gcc -MT` option. An example of a `Configure` command to be run from the
OpenSSL directory is:
An example of a `Configure` command to be run from the OpenSSL directory is:
./Configure nonstop-nsx_64 no-makedepend --with-rand-seed=rdcpu
./Configure nonstop-nsx_64 --with-rand-seed=rdcpu
Do not forget to include any OpenSSL cross-compiling prefix and certificate
options when creating your libraries.