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write to a --dynamic-list file

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see https://sourceware.org/binutils/docs-2.36/ld/Options.html
This commit is contained in:
DubbleClick 2025-08-29 10:53:38 +07:00
parent 20db00afcc
commit 4b4ae9b014
1 changed files with 27 additions and 32 deletions
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59
src/SPC/builder/unix/UnixBuilderBase.php
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@ -31,24 +31,23 @@ abstract class UnixBuilderBase extends BuilderBase
/** @var string LD flags */
public string $arch_ld_flags;
private static array $undefined_symbols = [];
private ?string $dynamic_export_list = null;
public static function getDynamicExportSymbols(): array
public function getDynamicExportSymbolsFile(): ?string
{
if (count(self::$undefined_symbols)) {
return self::$undefined_symbols;
if ($this->dynamic_export_list) {
return $this->dynamic_export_list;
}
if (SPCTarget::isStatic()) {
return null;
}
if (SPCTarget::isStatic()) { // no reason to keep symbols when we can't load shared extensions!
return [];
}
// keep all symbols defined in libphp.a
$defined = [];
$libphp = BUILD_LIB_PATH . '/libphp.a';
if (!is_file($libphp)) {
throw new WrongUsageException('You must build libphp.a before calling this function.');
}
$cmd = 'nm -g --defined-only -P ' . escapeshellarg($libphp) . ' 2>/dev/null';
$out = shell_exec($cmd) ?: '';
if ($out !== '') {
@ -61,15 +60,25 @@ abstract class UnixBuilderBase extends BuilderBase
continue;
}
$name = preg_replace('/@.*$/', '', $name);
if ($name !== '' && $name !== false) {
$defined[$name] = true;
if ($name !== '' && $name !== false && !str_starts_with($name, $libphp)) {
$defined[] = $name;
}
}
}
sort($defined, SORT_STRING);
$defined = array_unique($defined);
sort($defined);
self::$undefined_symbols = $defined;
return self::$undefined_symbols;
$exportList = BUILD_LIB_PATH . '/export-dynamic.list';
$lines = [];
$lines[] = '{';
foreach ($defined as $sym) {
$lines[] = " {$sym};";
}
$lines[] = '};';
file_put_contents($exportList, implode("\n", $lines) . "\n");
$this->dynamic_export_list = $exportList;
return $exportList;
}
public function proveLibs(array $sorted_libraries): void
@ -193,15 +202,8 @@ abstract class UnixBuilderBase extends BuilderBase
foreach (glob(BUILD_LIB_PATH . "/libphp*.{$suffix}") as $file) {
unlink($file);
}
$symbols = self::getDynamicExportSymbols(); // returns unique, version-stripped names
// turn list into many --export-dynamic-symbol=... flags
$dynamic_exports = implode(
' ',
array_map(
static fn (string $s) => '-Wl,--export-dynamic-symbol=' . escapeshellarg($s),
$symbols
)
);
$symbolList = $this->getDynamicExportSymbolsFile();
$dynamic_exports = ' -Wl,--dynamic-list=' . $symbolList;
}
[$ret, $out] = shell()->cd($sample_file_path)->execWithResult(getenv('CC') . ' -o embed embed.c ' . $lens . ' ' . $dynamic_exports);
if ($ret !== 0) {
@ -324,15 +326,8 @@ abstract class UnixBuilderBase extends BuilderBase
$debugFlags = $this->getOption('no-strip') ? '-w -s ' : '';
$dynamic_exports = '';
if (getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') === 'static') {
$symbols = self::getDynamicExportSymbols(); // returns unique, version-stripped names
// turn list into many --export-dynamic-symbol=... flags
$dynamic_exports = ' ' . implode(
' ',
array_map(
static fn (string $s) => '-Wl,--export-dynamic-symbol="' . $s . '"',
$symbols
)
);
$symbolList = $this->getDynamicExportSymbolsFile();
$dynamic_exports = ' -Wl,--dynamic-list=' . $symbolList;
}
$extLdFlags = "-extldflags '-pie{$dynamic_exports}'";
$muslTags = '';