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| author | James E Wilson <wilson@tuliptree.org> | 2017-10-26 13:41:20 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 2017-10-26 13:41:20 -0700 |
| commit | 1cf6c17b6dbd361ed7c74414cc753e4037d0d0e8 (patch) | |
| tree | cc09df9a1bf71d49d20841f31f5da66a79054f44 | |
| parent | 8a866b8296874b5f6f3371bb368c8191c828d98f (diff) | |
| download | gcc-1cf6c17b6dbd361ed7c74414cc753e4037d0d0e8.zip gcc-1cf6c17b6dbd361ed7c74414cc753e4037d0d0e8.tar.gz gcc-1cf6c17b6dbd361ed7c74414cc753e4037d0d0e8.tar.bz2 | |
Add some usage info -fdebug-prefix-map= docs.
gcc/
* doc/invoke.texi (-fdebug-prefix-map): Expand documentation.
From-SVN: r254121
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 791f3c1..a2bc674 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2017-10-26 Jim Wilson <wilson@tuliptree.org> + + * doc/invoke.texi (-fdebug-prefix-map): Expand documentation. + 2017-10-26 Tom de Vries <tom@codesourcery.com> PR tree-optimization/82707 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index f950c3c..0d2121b 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -6982,7 +6982,12 @@ link processing time. Merging is enabled by default. @item -fdebug-prefix-map=@var{old}=@var{new} @opindex fdebug-prefix-map When compiling files in directory @file{@var{old}}, record debugging -information describing them as in @file{@var{new}} instead. +information describing them as in @file{@var{new}} instead. This can be +used to replace a build time path with an install time path in the debug info. +It can also be used to change an absolute path to a relative path by using +@file{.} for @var{new}. This can give more reproducible builds, which are +location independent, but may require an extra command to tell GDB where to +find the source files. @item -fvar-tracking @opindex fvar-tracking |