xiph / xiph/flac

Ogg M4 script ignores sysroot setting

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Dominant language
C
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Description

When cross-compiling and invoking configure with parameters like --with-sysroot=/foo --prefix=/usr, FLAC finds libogg installed in host's /usr, adding it to include path and wreaking havok.

Looking into ogg.m4, it seems like while $prefix is one of the places being checked, it doesn't include the sysroot at all. I don't know much about autotools, but replacing things like OGG_LIBS="-L$prefix/lib" with OGG_LIBS="-L$sysroot/$prefix/lib" might be enough.

A workaround is to specify path manually using --with-ogg.

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Research direction

Start by reading ogg.m4 and the configure checks used for libogg, then reproduce the cross-compilation case with --with-sysroot=/foo and --prefix=/usr. Compare the generated include and library paths with the sysroot setting; done means host /usr is not selected when the sysroot is provided, while the --with-ogg workaround remains unnecessary.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
build-system
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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