Mike Jumper created GUACAMOLE-1892:
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Summary: Build fails with "undefined reference to 'timer_create'"
Key: GUACAMOLE-1892
URL: https://issues.apache.org/jira/browse/GUACAMOLE-1892
Project: Guacamole
Issue Type: Bug
Reporter: Mike Jumper
When attempting to build guacamole-server on Ubuntu 20.04.6, the build fails
with the following errors:
{code:none}
/usr/bin/ld: .../src/libguac/.libs/libguac.so: undefined reference to
`timer_delete'
/usr/bin/ld: .../src/libguac/.libs/libguac.so: undefined reference to
`timer_settime'
/usr/bin/ld: .../src/libguac/.libs/libguac.so: undefined reference to
`timer_create'
{code}
This is because the {{timer_create()}}, {{timer_settime()}}, and
{{timer_delete()}} functions are defined in a separate library on Ubuntu 20.04
({{librt}}). A configure test likely needs to be added to recognize whether
{{librt}} needs to be linked in.
*NOTE:* Users encountering this error can work around the problem by performing
the build with the {{LDFLAGS}} environment variable set to {{"-lrt"}}. For
example, when running {{configure}} for a fresh build:
{code:none}
LDFLAGS="-lrt" ./configure
{code}
Running {{make}}, etc. should then succeed as normal.
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