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* [gcc r12-8412] Extend --with-zstd documentation
@ 2022-05-24 11:33 Martin Liska
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From: Martin Liska @ 2022-05-24 11:33 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:394ff2fbfc84eb6d6cfc56b04e28ee9b42a5ab57
commit r12-8412-g394ff2fbfc84eb6d6cfc56b04e28ee9b42a5ab57
Author: Bruno Haible <bruno@clisp.org>
Date: Wed May 11 17:10:07 2022 +0200
Extend --with-zstd documentation
The patch that was so far added for documenting --with-zstd is pretty
minimal:
- it refers to undocumented options --with-zstd-include and
--with-zstd-lib;
- it suggests that --with-zstd can be used without an argument;
- it does not clarify how this option applies to cross-compilation.
How about adding the same details as for the --with-isl,
--with-isl-include, --with-isl-lib options, mutatis mutandis? This patch
does that.
PR other/105527
gcc/ChangeLog:
* doc/install.texi (Configuration): Add more details about --with-zstd.
Document --with-zstd-include and --with-zstd-lib
Signed-off-by: Bruno Haible <bruno@clisp.org>
(cherry picked from commit 3677eb80b683cead7db972bc206fd2e75d997bd2)
Diff:
---
gcc/doc/install.texi | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 76392302653..48408d842db 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -2372,10 +2372,20 @@ default is derived from glibc's behavior. When glibc clamps float_t to double,
GCC follows and enables the option. For other cross compiles, the default is
disabled.
-@item --with-zstd
-Specify prefix directory for installed zstd library.
-Equivalent to @option{--with-zstd-include=PATH/include} plus
-@option{--with-zstd-lib=PATH/lib}.
+@item --with-zstd=@var{pathname}
+@itemx --with-zstd-include=@var{pathname}
+@itemx --with-zstd-lib=@var{pathname}
+If you do not have the @code{zstd} library installed in a standard
+location and you want to build GCC, you can explicitly specify the
+directory where it is installed (@samp{--with-zstd=@/@var{zstdinstalldir}}).
+The @option{--with-zstd=@/@var{zstdinstalldir}} option is shorthand for
+@option{--with-zstd-lib=@/@var{zstdinstalldir}/lib} and
+@option{--with-zstd-include=@/@var{zstdinstalldir}/include}. If this
+shorthand assumption is not correct, you can use the explicit
+include and lib options directly.
+
+These flags are applicable to the host platform only. When building
+a cross compiler, they will not be used to configure target libraries.
@end table
@subheading Cross-Compiler-Specific Options
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