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Make it possible to specify source files that will only be used for shared libs

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There are rare cases when an object file will only be used when
building a shared library.  To enable this, we introduce
SHARED_SOURCE:

    SHARED_SOURCE[libfoo]=dllmain.c

Reviewed-by: Andy Polyakov <appro@openssl.org>
This commit is contained in:
Richard Levitte 2016-03-29 16:45:03 +02:00
parent dcdb4028b3
commit 2a08d1a05d
4 changed files with 47 additions and 4 deletions
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5
Configurations/README
View file

@ -358,6 +358,11 @@ sense at all to just have a rename like that (why not just use
"libbar" everywhere?), it does make sense when it can be used
conditionally. See a little further below for an example.
In some cases, it's desirable to include some source files in the
shared form of a library only:
SHARED_SOURCE[libfoo]=dllmain.c
For any file to be built, it's also possible to tell what extra
include paths the build of their source files should use:

4
Configurations/README.design
View file

@ -233,6 +233,10 @@ indexes:
SOURCE variables, and AS source files for programs and
libraries.
shared_sources =>
a hash table just like 'sources', but only as source
files (object files) for building shared libraries.
As an example, here is how the build.info files example from the
section above would be digested into a %unified_info table:

10
Configurations/common.tmpl
View file

@ -92,9 +92,11 @@
$OUT .= libobj2shlib(shlib => $unified_info{sharednames}->{$lib},
lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@{$unified_info{sources}->{$lib}} ],
(@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}}) ],
deps => [ reducedepends(resolvedepends($lib)) ],
%ordinals);
map { doobj($_, $lib, intent => "lib") } @{$unified_info{shared_sources}->{$lib}};
}
$OUT .= obj2lib(lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@ -111,9 +113,11 @@
return "" if $cache{$lib};
$OUT .= obj2dso(lib => $lib,
objs => [ map { (my $x = $_) =~ s|\.o$||; $x }
@{$unified_info{sources}->{$lib}} ],
(@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}}) ],
deps => [ resolvedepends($lib) ]);
map { doobj($_, $lib, intent => "dso") } @{$unified_info{sources}->{$lib}};
map { doobj($_, $lib, intent => "dso") } (@{$unified_info{sources}->{$lib}},
@{$unified_info{shared_sources}->{$lib}});
$cache{$lib} = 1;
}

32
Configure
View file

@ -1303,6 +1303,7 @@ if ($builder eq "unified") {
my %ordinals = ();
my %sources = ();
my %shared_sources = ();
my %includes = ();
my %depends = ();
my %renames = ();
@ -1382,6 +1383,9 @@ if ($builder eq "unified") {
qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
=> sub { push @{$sources{$1}}, split(/\s+/, $2)
if !@skip || $skip[$#skip] > 0 },
qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
=> sub { push @{$shared_sources{$1}}, split(/\s+/, $2)
if !@skip || $skip[$#skip] > 0 },
qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
=> sub { push @{$includes{$1}}, split(/\s+/, $2)
if !@skip || $skip[$#skip] > 0 },
@ -1567,6 +1571,32 @@ EOF
}
}
foreach (keys %shared_sources) {
my $dest = $_;
my $ddest = cleanfile($buildd, $_, $blddir);
if ($unified_info{rename}->{$ddest}) {
$ddest = $unified_info{rename}->{$ddest};
}
foreach (@{$shared_sources{$dest}}) {
my $s = cleanfile($sourced, $_, $blddir);
# If it isn't in the source tree, we assume it's generated
# in the build tree
if (! -f $s) {
$s = cleanfile($buildd, $_, $blddir);
}
# We recognise C and asm files
if ($s =~ /\.[csS]\b$/) {
(my $o = $_) =~ s/\.[csS]\b$/.o/;
$o = cleanfile($buildd, $o, $blddir);
$unified_info{shared_sources}->{$ddest}->{$o} = 1;
$unified_info{sources}->{$o}->{$s} = 1;
} else {
die "unrecognised source file type for shared library: $s\n";
}
}
}
foreach (keys %generate) {
my $dest = $_;
my $ddest = cleanfile($buildd, $_, $blddir);
@ -1636,7 +1666,7 @@ EOF
$unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
}
# Two level structures
foreach my $l1 (("sources", "ldadd", "depends")) {
foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
foreach my $l2 (sort keys %{$unified_info{$l1}}) {
$unified_info{$l1}->{$l2} =
[ sort keys %{$unified_info{$l1}->{$l2}} ];