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commit: d25e172b16fa3c59f6868dc164bc6dcc801c4fc2 |
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Author: Michał Górny <mgorny <AT> gentoo <DOT> org> |
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AuthorDate: Sun Dec 29 07:59:28 2019 +0000 |
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Commit: Ulrich Müller <ulm <AT> gentoo <DOT> org> |
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CommitDate: Wed Jan 29 07:58:26 2020 +0000 |
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URL: https://gitweb.gentoo.org/proj/devmanual.git/commit/?id=d25e172b |
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|
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general-concepts/dependencies: Document BDEPEND |
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|
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Signed-off-by: Michał Górny <mgorny <AT> gentoo.org> |
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Signed-off-by: Ulrich Müller <ulm <AT> gentoo.org> |
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|
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general-concepts/dependencies/text.xml | 48 ++++++++++++++++++++++++++++++++-- |
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1 file changed, 46 insertions(+), 2 deletions(-) |
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|
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diff --git a/general-concepts/dependencies/text.xml b/general-concepts/dependencies/text.xml |
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index 32feff1..8deca1f 100644 |
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--- a/general-concepts/dependencies/text.xml |
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+++ b/general-concepts/dependencies/text.xml |
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@@ -11,17 +11,61 @@ provided by <c>emerge</c>. |
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</p> |
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</body> |
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|
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+<section> |
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+<title>CHOST vs CBUILD</title> |
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+<body> |
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+ |
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+<p> |
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+In order to avoid ambiguity, we use the following terms to indicate different |
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+systems when cross-compiling: |
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+</p> |
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+ |
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+<dl> |
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+ <dt>CBUILD</dt> |
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+ <dd> |
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+ The system on which the build is performed. Dependencies that apply |
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+ to the CBUILD system can be executed during build time. When |
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+ cross-compiling, they are not installed into the system being built. |
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+ </dd> |
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+ |
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+ <dt>CHOST</dt> |
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+ <dd> |
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+ The system on which the package is going to be executed. When |
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+ cross-compiling, dependencies applying to CHOST can not be executed. |
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+ </dd> |
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+</dl> |
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+ |
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+<p> |
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+When not cross-compiling, CBUILD and CHOST have the same value and both classes |
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+of dependencies are merged. |
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+</p> |
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+ |
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+</body> |
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+</section> |
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+ |
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<section> |
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<title>Build Dependencies</title> |
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<body> |
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|
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<p> |
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-The <c>DEPEND</c> ebuild variable should specify any dependencies which are |
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-required to unpack, patch, compile or install the package (but see |
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+Build dependencies are used to specify any dependencies that are required |
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+to unpack, patch, compile, test or install the package (but see |
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<uri link="::general-concepts/dependencies#Implicit System Dependency"/> for |
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exemptions). |
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</p> |
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|
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+<p> |
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+Starting with EAPI 7, build dependencies are split into two variables: |
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+<c>BDEPEND</c> and <c>DEPEND</c>. <c>BDEPEND</c> specifies dependencies |
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+applicable to CBUILD, i.e. programs that need to be executed during the build, |
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+e.g. <c>virtual/pkgconfig</c>. <c>DEPEND</c> specifies dependencies for CHOST, |
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+i.e. packages that need to be found on built system, e.g. libraries and headers. |
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+</p> |
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+ |
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+<p> |
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+In earlier EAPIs, all build dependencies are placed in <c>DEPEND</c>. |
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+</p> |
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+ |
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</body> |
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</section> |
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