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Simply v8::Isolate::New to test if snapshot blob needed

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The test on internal symbols seems too fragile, e.g. with V8
version 4.5.90 it is false positive.
This commit is contained in:
Stefan Siegl 2016-02-28 19:52:46 +01:00
parent 2c8ef2aa66
commit 52ebdc28ed
1 changed files with 92 additions and 54 deletions
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134
config.m4
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@ -130,14 +130,91 @@ int main ()
AC_MSG_ERROR([could not determine libv8 version])
fi
AC_MSG_CHECKING([for v8::internal::ReadNatives])
AC_TRY_LINK([
namespace v8 {
namespace internal {
void ReadNatives();
if test "$V8_API_VERSION" -ge 3029036 ; then
dnl building for v8 3.29.36 or later, which requires us to
dnl initialize and provide a platform; hence we need to
dnl link in libplatform to make our life easier.
PHP_ADD_INCLUDE($V8_DIR)
case $host_os in
darwin* )
static_link_extra="libv8_libplatform.a libv8_libbase.a"
;;
* )
static_link_extra="libv8_libplatform.a"
;;
esac
for static_link_extra_file in $static_link_extra; do
AC_MSG_CHECKING([for $static_link_extra_file])
for i in $PHP_V8JS $SEARCH_PATH ; do
if test -r $i/lib64/$static_link_extra_file; then
static_link_dir=$i/lib64
AC_MSG_RESULT(found in $i)
fi
if test -r $i/lib/$static_link_extra_file; then
static_link_dir=$i/lib
AC_MSG_RESULT(found in $i)
fi
done
if test -z "$static_link_dir"; then
AC_MSG_RESULT([not found])
AC_MSG_ERROR([Please provide $static_link_extra_file next to the libv8.so, see README.md for details])
fi
LDFLAGS_libplatform="$static_link_dir/$static_link_extra_file"
done
# modify flags for (possibly) succeeding V8 startup check
CPPFLAGS="$CPPFLAGS -I$V8_DIR"
LIBS="$LIBS $LDFLAGS_libplatform"
fi
if test "$V8_API_VERSION" -ge 4004010 ; then
dnl building for v8 4.4.10 or later, which requires us to
dnl provide startup data, if V8 wasn't compiled with snapshot=off.
AC_MSG_CHECKING([whether V8 requires startup data])
AC_TRY_RUN([
#include <v8.h>
#include <libplatform/libplatform.h>
#include <stdlib.h>
#include <string.h>
#if PHP_V8_API_VERSION >= 4004010
class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
virtual void* Allocate(size_t length) {
void* data = AllocateUninitialized(length);
return data == NULL ? data : memset(data, 0, length);
}
}], [v8::internal::ReadNatives();], [
AC_MSG_RESULT([found (using snapshots)])
virtual void* AllocateUninitialized(size_t length) { return malloc(length); }
virtual void Free(void* data, size_t) { free(data); }
};
#endif
int main ()
{
v8::Platform *v8_platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(v8_platform);
v8::V8::Initialize();
#if PHP_V8_API_VERSION >= 4004044
static ArrayBufferAllocator array_buffer_allocator;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = &array_buffer_allocator;
v8::Isolate::New(create_params);
#else /* PHP_V8_API_VERSION < 4004044 */
v8::Isolate::New();
#endif
return 0;
}
], [
AC_MSG_RESULT([no])
], [
AC_MSG_RESULT([yes])
AC_DEFINE([PHP_V8_USE_EXTERNAL_STARTUP_DATA], [1], [Whether V8 requires (and can be provided with custom versions of) external startup data])
SEARCH_PATH="$V8_DIR/lib"
@ -173,53 +250,14 @@ int main ()
AC_MSG_RESULT([not found])
AC_MSG_ERROR([Please provide V8 snapshot blob as needed])
fi
], [
AC_MSG_RESULT([not found (snapshots disabled)])
])
fi
AC_LANG_RESTORE
LIBS=$old_LIBS
LDFLAGS=$old_LDFLAGS
LDFLAGS="$old_LDFLAGS $LDFLAGS_libplatform"
CPPFLAGS=$old_CPPFLAGS
if test "$V8_API_VERSION" -ge 3029036 ; then
dnl building for v8 3.29.36 or later, which requires us to
dnl initialize and provide a platform; hence we need to
dnl link in libplatform to make our life easier.
PHP_ADD_INCLUDE($V8_DIR)
case $host_os in
darwin* )
static_link_extra="libv8_libplatform.a libv8_libbase.a"
;;
* )
static_link_extra="libv8_libplatform.a"
;;
esac
for static_link_extra_file in $static_link_extra; do
AC_MSG_CHECKING([for $static_link_extra_file])
for i in $PHP_V8JS $SEARCH_PATH ; do
if test -r $i/lib64/$static_link_extra_file; then
static_link_dir=$i/lib64
AC_MSG_RESULT(found in $i)
fi
if test -r $i/lib/$static_link_extra_file; then
static_link_dir=$i/lib
AC_MSG_RESULT(found in $i)
fi
done
if test -z "$static_link_dir"; then
AC_MSG_RESULT([not found])
AC_MSG_ERROR([Please provide $static_link_extra_file next to the libv8.so, see README.md for details])
fi
LDFLAGS="$LDFLAGS $static_link_dir/$static_link_extra_file"
done
fi
PHP_NEW_EXTENSION(v8js, [ \
v8js_array_access.cc \