Alpine/musl support

[bjoernr-de]

Hi,

Thanks for your efforts in this project!
Is Alpine/musl support planned in near future?

[sni]

No, nothing planned like that. Have you tried building the module from source?

[bjoernr-de]

I did but run into musl vs. glibc incompatibilities:

[...]

./apxs.sh -c -n mod_prometheus_status.so -I.  src/mod_prometheus_status.c src/mod_prometheus_status_format.c
/usr/share/build-1/libtool --silent --mode=compile cc -prefer-pic   -DLINUX -D_REENTRANT -D_GNU_SOURCE  -I/usr/local/apache2/include  -I/usr/include/apr-1   -I/usr/include/apr-1  -I.  -c -o src/mod_prometheus_status.lo src/mod_prometheus_status.c && touch src/mod_prometheus_status.slo
src/mod_prometheus_status.c: In function 'prometheus_status_load_gomodule':
src/mod_prometheus_status.c:364:22: error: 'RTLD_DI_ORIGIN' undeclared (first use in this function)
  364 |     if(dlinfo(osdso, RTLD_DI_ORIGIN, &origin) != -1) {
      |                      ^~~~~~~~~~~~~~
src/mod_prometheus_status.c:364:22: note: each undeclared identifier is reported only once for each function it appears in
apxs:Error: Command failed with rc=65536
.
make: *** [Makefile:234: mod_prometheus_status.so] Error 1

[sni]

could you try again, i changed the includes a bit which might fix the issue.

[bjoernr-de]

@sni thanks for your help :)

Unfortunately it's the same error:

./apxs.sh -c -n mod_prometheus_status.so -I.  src/mod_prometheus_status.c src/mod_prometheus_status_format.c
/usr/share/build-1/libtool --silent --mode=compile cc -prefer-pic   -DLINUX -D_REENTRANT -D_GNU_SOURCE  -I/usr/local/apache2/include  -I/usr/include/apr-1   -I/usr/include/apr-1  -I.  -c -o src/mod_prometheus_status.lo src/mod_prometheus_status.c && touch src/mod_prometheus_status.slo
src/mod_prometheus_status.c: In function 'prometheus_status_load_gomodule':
src/mod_prometheus_status.c:364:22: error: 'RTLD_DI_ORIGIN' undeclared (first use in this function)
  364 |     if(dlinfo(osdso, RTLD_DI_ORIGIN, &origin) != -1) {
      |                      ^~~~~~~~~~~~~~
src/mod_prometheus_status.c:364:22: note: each undeclared identifier is reported only once for each function it appears in
apxs:Error: Command failed with rc=65536
.
make: *** [Makefile:234: mod_prometheus_status.so] Error 1

If you want to try it on your own:

docker run --rm -it httpd:alpine3.22 ash

# Inside the container:
apk add --no-cache bash git go build-base apache2-dev
cd /tmp/
git clone https://github.com/ConSol-Monitoring/apache_mod_prometheus_status.git
cd apache_mod_prometheus_status
make