[FIX] fix alpine dependencies for pg_vector compilation

[Auneor]

I had errors when building image, leaving the image without pg_vector enabled.
This fix the build errors

[josep-tecnativa]

Could you show what errors do you have please?

[Auneor]

clang-19 -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-unused-command-line-argument -Wno-compound-token-split-by-macro -Wno-format-truncation -O2 -I. -I./ -I/usr/local/include/postgresql/server -I/usr/local/include/postgresql/internal -D_GNU_SOURCE -I/usr/include/libxml2 -flto=thin -emit-llvm -c -o src/bitutils.bc src/bitutils.c
make: clang-19: No such file or directory
make: *** [/usr/local/lib/postgresql/pgxs/src/makefiles/../../src/Makefile.global:1093: src/bitutils.bc] Error 127
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/main/x86_64/APKINDEX.tar.gz: No such file or directory
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/community/x86_64/APKINDEX.tar.gz: No such file or directory
( 1/21) Purging .pgvector-build (20260303.105839)
( 2/21) Purging build-base (0.5-r3)

[josep-tecnativa]

Which version are you trying to build? And how?

[Auneor]

simon@ ~/git/docker-postgres-autoconf (master_tecnativa) $ git remote -v
origin https://github.com/Tecnativa/docker-postgres-autoconf (fetch)
origin https://github.com/Tecnativa/docker-postgres-autoconf (push)

simon@ ~/git/docker-postgres-autoconf (master_tecnativa) $ git status
Sur la branche master_tecnativa
Votre branche est à jour avec 'origin/master'.

Modifications qui ne seront pas validées :
(utilisez "git add ..." pour mettre à jour ce qui sera validé)
(utilisez "git restore ..." pour annuler les modifications dans le répertoire de travail)
modifié : Dockerfile

simon@ ~/git/docker-postgres-autoconf (master_tecnativa) $ git rev-parse HEAD
313f179

simon@ ~/git/docker-postgres-autoconf (master_tecnativa) $ git diff
diff --git a/Dockerfile b/Dockerfile
index f24e48d..2e5a5a4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,4 @@
-ARG BASE_TAG
-FROM docker.io/postgres:${BASE_TAG}
+FROM docker.io/postgres:18-alpine
ENTRYPOINT [ "/autoconf-entrypoint" ]
CMD []
ARG PGVECTOR_VERSION=0.8.1

simon@ ~/git/docker-postgres-autoconf (master_tecnativa) $ docker build -t test-pgvector:1.0 .
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
Install the buildx component to build images with BuildKit:
https://docs.docker.com/go/buildx/

Sending build context to Docker daemon 18.94kB
Step 1/10 : FROM docker.io/postgres:18-alpine
---> ff4a089dadda
Step 2/10 : ENTRYPOINT [ "/autoconf-entrypoint" ]
---> Using cache
---> a546397efd3b
Step 3/10 : CMD []
---> Using cache

SNIP

gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wshadow=compatible-local -Wformat-security -Wmissing-variable-declarations -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-format-truncation -Wno-stringop-truncation -O2 -march=native -ftree-vectorize -fassociative-math -fno-signed-zeros -fno-trapping-math -fPIC -fvisibility=hidden -shared -o vector.so src/bitutils.o src/bitvec.o src/halfutils.o src/halfvec.o src/hnsw.o src/hnswbuild.o src/hnswinsert.o src/hnswscan.o src/hnswutils.o src/hnswvacuum.o src/ivfbuild.o src/ivfflat.o src/ivfinsert.o src/ivfkmeans.o src/ivfscan.o src/ivfutils.o src/ivfvacuum.o src/sparsevec.o src/vector.o -L/usr/local/lib -L/usr/local/lib -Wl,--as-needed -fvisibility=hidden
cp sql/vector.sql sql/vector--0.8.1.sql
clang-19 -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-unused-command-line-argument -Wno-compound-token-split-by-macro -Wno-format-truncation -O2 -I. -I./ -I/usr/local/include/postgresql/server -I/usr/local/include/postgresql/internal -D_GNU_SOURCE -I/usr/include/libxml2 -flto=thin -emit-llvm -c -o src/bitutils.bc src/bitutils.c
make: clang-19: No such file or directory
make: *** [/usr/local/lib/postgresql/pgxs/src/makefiles/../../src/Makefile.global:1104: src/bitutils.bc] Error 127
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/main/x86_64/APKINDEX.tar.gz: No such file or directory
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/community/x86_64/APKINDEX.tar.gz: No such file or directory
( 1/21) Purging .pgvector-build (20260303.130237)
( 2/21) Purging build-base (0.5-r3)
( 3/21) Purging file (5.46-r2)
( 4/21) Purging g++ (15.2.0-r2)
( 5/21) Purging libstdc++-dev (15.2.0-r2)
( 6/21) Purging gcc (15.2.0-r2)
( 7/21) Purging binutils (2.45.1-r0)
( 8/21) Purging libatomic (15.2.0-r2)
( 9/21) Purging libgomp (15.2.0-r2)
(10/21) Purging make (4.4.1-r3)
(11/21) Purging fortify-headers (1.1-r5)
(12/21) Purging patch (2.8-r0)
(13/21) Purging linux-headers (6.16.12-r0)
(14/21) Purging ca-certificates (20251003-r0)
Executing ca-certificates-20251003-r0.post-deinstall
(15/21) Purging isl26 (0.26-r1)
(16/21) Purging jansson (2.14.1-r0)
(17/21) Purging libmagic (5.46-r2)
(18/21) Purging mpc1 (1.3.1-r1)
(19/21) Purging mpfr4 (4.2.2-r0)
(20/21) Purging musl-dev (1.2.5-r21)
(21/21) Purging gmp (6.3.0-r4)
Executing busybox-1.37.0-r30.trigger
OK: 246.8 MiB in 64 packages
---> Removed intermediate container 4dfaa74f6e65

[josep-tecnativa]

I can build v18 using this command:
docker build --build-arg BASE_TAG=18-alpine -t docker-postgres-autoconf:local .

And i have no problems. Could you try?

[Auneor]

if i do your command with --no-cache i have the error:
docker build --build-arg BASE_TAG=18-alpine -t docker-postgres-autoconf:local .

cp sql/vector.sql sql/vector--0.8.1.sql
clang-19 -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-unused-command-line-argument -Wno-compound-token-split-by-macro -Wno-format-truncation -O2 -I. -I./ -I/usr/local/include/postgresql/server -I/usr/local/include/postgresql/internal -D_GNU_SOURCE -I/usr/include/libxml2 -flto=thin -emit-llvm -c -o src/bitutils.bc src/bitutils.c
make: clang-19: No such file or directory
make: *** [/usr/local/lib/postgresql/pgxs/src/makefiles/../../src/Makefile.global:1104: src/bitutils.bc] Error 127
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/main/x86_64/APKINDEX.tar.gz: No such file or directory
WARNING: opening from cache https://dl-cdn.alpinelinux.org/alpine/v3.23/community/x86_64/APKINDEX.tar.gz: No such file or directory
( 1/21) Purging .pgvector-build (20260303.141104)
( 2/21) Purging build-base (0.5-r3)
( 3/21) Purging file (5.46-r2)

[Auneor]

docker build --build-arg BASE_TAG=18-alpine -t docker-postgres-autoconf:local . --no-cache

[josep-tecnativa]

I can’t reproduce it: with BASE_TAG=18-alpine the build completes and I don’t see any clang-19 ... -emit-llvm step.
In your logs it does try to compile LLVM bitcode (*.bc) and fails because clang-19 is missing.

Could you paste the output of:

docker version
docker info | sed -n '1,120p'
docker buildx version || true
docker buildx ls || true
uname -m

and try forcing amd64:

DOCKER_BUILDKIT=1 docker build --no-cache --pull --platform=linux/amd64 \
  --build-arg BASE_TAG=18-alpine \
  -t docker-postgres-autoconf:local .

Also, are you on an ARM machine (Apple Silicon / ARM64 Linux) or using emulation (--platform / QEMU)? The base image and toolchain can differ between amd64 and arm64, which could explain why you hit the clang-19/LLVM bitcode path.

[Auneor]

i'm on amd64:
simon@ ~ () $ docker version

docker info | sed -n '1,120p'
docker buildx version || true
docker buildx ls || true
uname -m
Client:
 Version:           28.2.2
 API version:       1.50
 Go version:        go1.23.1
 Git commit:        28.2.2-0ubuntu1~24.04.1
 Built:             Wed Sep 10 14:16:39 2025
 OS/Arch:           linux/amd64
 Context:           default

Server:
 Engine:
  Version:          28.2.2
  API version:      1.50 (minimum version 1.24)
  Go version:       go1.23.1
  Git commit:       28.2.2-0ubuntu1~24.04.1
  Built:            Wed Sep 10 14:16:39 2025
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.7.28
  GitCommit:        
 runc:
  Version:          1.3.3-0ubuntu1~24.04.3
  GitCommit:        
 docker-init:
  Version:          0.19.0
  GitCommit:        
Client:
 Version:    28.2.2
 Context:    default
 Debug Mode: false
 Plugins:
  compose: Docker Compose (Docker Inc.)
    Version:  2.37.1+ds1-0ubuntu2~24.04.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 13
  Running: 12
  Paused: 0
  Stopped: 1
 Images: 140
 Server Version: 28.2.2
 Storage Driver: overlay2
  Backing Filesystem: zfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 
 runc version: 
 init version: 
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.8.0-94-generic
 Operating System: Ubuntu 24.04.4 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 15.23GiB
 Name: simon-Latitude-5510
 ID: 510650b3-aa82-45c1-be13-bc891b39d274
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false

docker: unknown command: docker buildx

Run 'docker --help' for more information
docker: unknown command: docker buildx

Run 'docker --help' for more information
x86_64
simon@ ~ () $ 

[josep-tecnativa]

Nice,

I can see that you don't have buildx installed.

I recomend you to install it. On Ubuntu 24.04 you can usually do:

sudo apt update
sudo apt install docker-buildx-plugin

Then, you will be able to build, for example, using this command:

DOCKER_BUILDKIT=1 docker build --no-cache --pull  --build-arg BASE_TAG=18-alpine  -t docker-postgres-autoconf:local .

Let me know if this works for you.

[Auneor]

Hello Josep,
Upgrading my docker install and installing buildx it worked.
Thank you a lot.
But maybe check your image building infrastructure, because
ghcr.io/tecnativa/postgres-autoconf:18-alpine
Does not have pg_vector enabled that may be a bug on build?
(Or maybe i'm just misusing the images i would be very sorry if it would be the case)