libuv CI should build 64-bit binaries on AIX

[richardlau]

Refs: nodejs/node#20129 (comment)

Node.js only supports 64-bit AIX but it looks like libuv is compiling 32-bit binaries on AIX and thus didn't detect the compilation failure that libuv/libuv#1795 introduced.

Needs libuv/libuv#1807 to land first so that libuv can actually build 64-bit AIX binaries.

cc @nodejs/libuv @nodejs/platform-aix

[richardlau]

libuv/libuv#1807 has landed so it should just be a matter of passing -Dtarget_arch=ppc64 to gyp_uv.py to build 64-bit AIX binaries.

I have no strong feelings on whether we should continue to build 32-bit AIX binaries for libuv -- we currently only build 64-bit for AIX for Node.js.

[mhdawson]

@richardlau so do you mean add -Dtarget_arch=ppc64 to the CI job ?

I'd lean to just building for 64 bit, although the libuv jobs are quite quick.

[richardlau]

@richardlau so do you mean add -Dtarget_arch=ppc64 to the CI job ?

I did, but I was assuming the CI job was using gyp, but looking at https://ci.nodejs.org/job/libuv-test-commit-aix/803/nodes=aix61-ppc64/console it looks like it might be using autotools which I am not familiar with.

[mhdawson]

@richardlau if you can't figure it out can you see if you can get help from @gireeshpunathil

[gireeshpunathil]

@richardlau - can you try this?

diff --git a/Makefile.am b/Makefile.am
index ae9d96bc..45936421 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -331,7 +331,9 @@ libuv_la_CFLAGS += -D_ALL_SOURCE \
                    -D_XOPEN_SOURCE=500 \
                    -D_LINUX_SOURCE_COMPAT \
                    -D_THREAD_SAFE \
-                   -DHAVE_SYS_AHAFS_EVPRODS_H
+                   -DHAVE_SYS_AHAFS_EVPRODS_H \
+                   -maxi64 \
+test_run_tests_CFLAGS += -maix64
 include_HEADERS += include/uv-aix.h
 libuv_la_SOURCES += src/unix/aix.c src/unix/aix-common.c
 endif

As we don't have 32 bit builds, the 64 bit hard-coding is fine, and that is what other platforms that don't support 32 bit do.

[richardlau]

@gireeshpunathil Unfortunately I cannot because the AIX machines I have access to do not have autotools installed.

[richardlau]

Thanks to @gireeshpunathil I've found an AIX machine with autotools. It's not enough to pass -maix64 as CFLAGS and LDFLAGS -- you also need to make sure nm and ar run in the correct object mode.

The libuv build instructions for autotools:

$ sh autogen.sh
$ ./configure
$ make
$ make check
$ make install

what appears to work for 64-bit binaries on AIX is:

$ export OBJECT_MODE=64
$ sh autogen.sh
$ ./configure CFLAGS=-maix64 LDFLAGS=-maix64
$ make
$ make check
$ make install

Validating binary is 64-bit

-bash-4.4$ dump -X64 -ov test/run-tests

test/run-tests:

                        ***Object Module Header***
# Sections      Symbol Ptr      # Symbols       Opt Hdr Len     Flags
         5      0x002eb352         174207               120     0x1002
Flags=( EXEC DYNLOAD DEP_SYSTEM )
Timestamp = "Apr 25 14:19:26 2018"
Magic = 0x1f7  (64-bit XCOFF)

                        ***Optional Header***
Tsize       Dsize       Bsize       Tstart      Dstart
0x000de360  0x00013510  0x006ae340  0x10000240  0x200005a0

SNloader    SNentry     SNtext      SNtoc       SNdata
0x0004      0x0002      0x0001      0x0002      0x0002

TXTalign    DATAalign   TOC         vstamp      entry
0x0007      0x0004      0x2000bab0  0x0001      0x200044c0

maxSTACK    maxDATA     SNbss       magic       modtype
0x00000000  0x00000000  0x0003      0x010b        1L
-bash-4.4$

@mhdawson I believe adding export OBJECT_MODE=64 and adding CFLAGS=-maix64 LDFLAGS=-maix64 to the ./configure command are the required changes to build 64-bit AIX binaries.

[richardlau]

Alternatively we could switch the AIX build to use gyp, but we should clear that with the libuv maintainers first.

[bnoordhuis]

I'm fine with that, I don't think there are any users of the aix+autotools combo. Pull request welcome.

[mhdawson]

Ok so current job has

sh autogen.sh && ./configure
make -j2
make check

@richardlau I tried to update to:

sh autogen.sh && ./configure CFLAGS=-maix64 LDFLAGS=-maix64

We got an error:

+ ./configure CFLAGS=-maix64 LDFLAGS=-maix64
checking for a BSD-compatible install... ./install-sh -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... nawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking build system type... Could not load program /usr/opt/freeware/bin/rpm:
Could not load module /opt/freeware/lib/libpopt.so.
	Dependent module /usr/lib/libiconv.a(libiconv.so.2) could not be loaded.
	Member libiconv.so.2 is not found in archive 
Could not load module rpm.
	Dependent module /opt/freeware/lib/libpopt.so could not be loaded.
Could not load module .

which is strange since we compile libuv fine in the Node.js builds

[mhdawson]

Actually, that same error occurs previously but does not seem to block the process is unrealated.

The real problem seems to be:

checking for ar... ar
checking the archiver (ar) interface... unknown
configure: error: could not determine ar interface
Build step 'Conditional steps (multiple)' marked build as failure
Notifying upstream projects of job completion
Finished: FAILURE

[mhdawson]

@richardlau ar shows as

checking for ar... ar
checking the archiver (ar) interface... unknown
configure: error: could not determine ar interface
Build step 'Conditional steps (multiple)' marked build as failure
Notifying upstream projects of job completion
Finished: FAILURE

and figure out what might be going wrong.