natives_blob.bin - not found

[rbro]

I am running CentOS 7 and followed the instructions in README.Linux.md to compile v8. When I try to compile v8js 1.3.2, I'm getting a configure error:

checking for natives_blob.bin... not found
configure: error: Please provide V8 native blob as needed
ERROR: `/tmp/pear/temp/v8js/configure --with-php-config=/usr/local/bin/php-config --with-v8js=/opt/v8' failed

I'm not seeing a file called natives_blob.bin in my v8 directory.

Can you please let me know how to generate this file? I tried installing 1.3.1 instead and the configure worked, but I got a different error during compiling which I believe already was resolved in another issue:

make: *** No rule to make target `/tmp/pear/temp/v8js/v8js_generator_export.cc', needed by `v8js_generator_export.lo'.  Stop.
ERROR: `make' failed

Thanks for your help.

[stesie]

could you please provide the config.log file contents here

And yes, the latter issue should be fixed meanwhile.

[rbro]

Yes, attached is my config.log.

config.log.txt

[stesie]

the problem is this one

configure:5141: g++ -o conftest -g -O2 -I/opt/v8/include -std=c++11 -I/opt/v8 -Wl,--rpath=/opt/v8/lib -L/opt/v8/lib conftest.cpp -lv8  /opt/v8/lib/libv8_libplatform.a /opt/v8/lib/libv8_libbase.a >&5
g++: error: /opt/v8/lib/libv8_libbase.a: No such file or directory

... it tries to link libv8_libbase.a which apparently doesn't exist, and it even found that out:

configure:5073: checking for libv8_libplatform.a
configure:5084: result: found in /opt/v8/lib
configure:5073: checking for libv8_libbase.a

... but it isn't necessarily needed. Need to check back and try to reproduce (on some other box)

[stesie]

Just uploaded version 1.3.3 to PECL that should have that sorted out

[rbro]

Thanks for the quick fix. I confirm it's resolved.

[Jan-E]

Just uploaded version 1.3.3 to PECL that should have that sorted out

@stesie Could you adjust the version number in this repo? It still shows as 1.3.2

[steezeburger]

I'm getting the same errors on MacOS.

Downloading 1.3.3 from PECL's website and refollowing the instructions, I still get the same errors about missing libv8_libbase.a, libv8_libplatform.a, and natives_blob.bin.

Any ideas?

http://hastebin.com/uwutaboson.makefile config.log if interested

Edit: I had to manually copy v8/out/natives_blob.bin and v8/out/snapshot_blob.bin to /usr/local/lib and it seemed to work.

[several27]

I have this problem as well, missing "out/native/obj.target/src/libv8_libplatform.a" file.

@steezeburger natives_blob.bin and snapshot_blob.bin are missing from out directory as well.

[stesie]

@Jan-E sure, sorry for messing this up

[stesie]

@steezeburger I'm a bit unsure/confused, does it work for you now or doesn't it?

I agree that the error message might be misleading, it always complains about missing natives_blob.bin if it isn't able to successfully compile and run a minimalist V8. The problem is that libv8_libbase.a isn't needed on all systems (but some, e.g. MacOS and NixOS Linux need it, Ubuntu Linux doesn't) ... yet libv8_libplatform.a seems to be needed on any platform.

Whether blobs are needed depends on compile flags with V8 itself. It's kindof imposible to detect without just trying and guessing.

So I could change configure to

• fail if libv8_libplatform.a is missing (and tell exactly that)
• if libv8_libbase.a is missing, just accept and go on (= no change)
• if compilation of blob test fails -> tell that (+ hint at config.log file)
• if blob test-run fails -> explicitly tell that (bit more verbose than current log message)

sounds good?

@several27 which version of V8 are you using?

[steezeburger]

@stesie The last command I was able to run was the ./configure CXXFLAGS="-Wno-c++11-narrowing"

make then fails due to too many errors and warnings

Edit: I believe my errors when running make are from not being on PHP7. I'm currently on 5.6 but will hopefully be upgrading soon for other reasons and to test this.

[mikemherron]

@stesie Just FYI I am experiencing the same issue as @several27, the libv8_libplatform.a is not generated when building v8, causing the configure command to fail. I'm using V8 5.7.27.