Fix build without crypto support

[Eljees]

Summary

• always build and link the CRAPI object on platforms with mmap support
• compile only the no-op crapi.c implementation when no digest backend is available
• keep the full CRAPI source set when Gcrypt or NSS is enabled

This lets non-crypto builds provide crapi_init without compiling digest code that requires a crypto backend.

Fixes #2310.

Testing

Reproduced the failure on the unmodified commit: building the oscap target without Gcrypt fails to link with undefined reference to 'crapi_init'.

The patched tree builds successfully with:

cmake -DCMAKE_DISABLE_FIND_PACKAGE_GCrypt=TRUE \
  -DENABLE_OSCAP_UTIL_DOCKER=OFF \
  -DENABLE_TESTS=OFF ..
cmake --build . -j2

This builds libopenscap, libopenscap_sce, and the oscap CLI.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[jan-cerny]

builds successfully using the provided command

[Eljees]

Thank you!, i'm glad could have helped! ;)

…

On Tue, Jul 28, 2026 at 2:32 PM Jan Černý ***@***.***> wrote: Merged #2390 <#2390> into main. — Reply to this email directly, view it on GitHub <#2390?email_source=notifications&email_token=ANWGLBWU73KPNXCQ2SURK3T5HCFMXA5CNFSNUABQM5UWIORPF5TWS5BNNB2WEL2JONZXKZKFOZSW45CON52GSZTJMNQXI2LPNYXTEOBVHE2DQMZSHEZDPJTSMVQXG33OUZQXK5DIN5ZKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#event-28594832927>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ANWGLBVGZSZH4FOEEIV53GD5HCFMXAVCNFSNUABEKJSXA33TNF2G64TZHMYTSMRXHEYTSOJ3JFZXG5LFHM2DSOBUGE3DENZTGWQXMAQ> . Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS <https://github.com/notifications/mobile/ios/ANWGLBQS7E2VBJBZJHW7YFD5HCFMXA5CNFSNUABQM5UWIORPF5TWS5BNNB2WEL2JONZXKZKFOZSW45CON52GSZTJMNQXI2LPNYXTEOBVHE2DQMZSHEZDPJTSMVQXG33OUZQXK5DIN5ZKKZLWMVXHJKTGN5XXIZLSL5UW64Y> and Android <https://github.com/notifications/mobile/android/ANWGLBRE2OLFDDNEAWSYVGL5HCFMXA5CNFSNUABQM5UWIORPF5TWS5BNNB2WEL2JONZXKZKFOZSW45CON52GSZTJMNQXI2LPNYXTEOBVHE2DQMZSHEZDPJTSMVQXG33OUZQXK5DIN5ZKKZLWMVXHJLTGN5XXIZLSL5QW4ZDSN5UWI>. Download it today! You are receiving this because you authored the thread.Message ID: ***@***.***>