The libgsm library lets Windows applications use the GSM codec (msgsm32.acm) for audio compression and decompression.
On CrossOver 17 and greater, the simplest solution to fix this issue is to run: /path/to/cxoffice/bin/cxfix missinglibgsm missinglibgsm.amd64
Or add --show-all to see how CrossOver would fix it on your platform and others.
Alternatively you may try one of the commands below.
For 32-bit Windows applications
32-bit Arch Linux : pacman -Syu gsm
Debian : apt-get install libgsm1:i386
32-bit Fedora : yum install gsm
64-bit Fedora : yum install gsm.i686 gsm.x86_64
32-bit openSUSE : zypper install libgsm1
64-bit openSUSE : zypper install libgsm1-32bit
32-bit Ubuntu : apt-get install libgsm1
64-bit Ubuntu : apt-get install ia32-libs
For 64-bit Windows applications
Arch Linux : pacman -Syu gsm
Debian : apt-get install libgsm1:amd64
Fedora : yum install gsm.x86_64
openSUSE : zypper install libgsm1
Ubuntu : apt-get install libgsm1:amd64
cxfix --show-all may have more up-to-date fixes.
The commands usually also apply to derived distributions. So for instance a fix for Debian is typically also applicable to Ubuntu, Linux Mint, Deepin and Pop! OS. Similarly a fix for Fedora likely also works on Red Hat Enterprise Linux, CentOS, etc.
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