diff options
Diffstat (limited to 'gcc/doc/sourcebuild.texi')
| -rw-r--r-- | gcc/doc/sourcebuild.texi | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index 91fadc6..6c5586e 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -215,10 +215,10 @@ man pages and support for converting the installation manual to HTML@. @xref{Documentation}. @item ginclude -System headers installed by GCC, mainly those required by the C -standard of freestanding implementations. @xref{Headers, , Headers -Installed by GCC}, for details of when these and other headers are -installed. +System headers installed by GCC, mainly those defined by the C +standard that do not declare functions with external linkage. +@xref{Headers, , Headers Installed by GCC}, for details of when these +and other headers are installed. @item po Message catalogs with translations of messages produced by GCC into @@ -326,7 +326,8 @@ Headers Installed by GCC}, for more information about the In general, GCC expects the system C library to provide most of the headers to be used with it. However, GCC will fix those headers if necessary to make them work with GCC, and will install some headers -required of freestanding implementations. These headers are installed +of its own, mainly headers that do not declare functions with external +linkage. These headers are installed in @file{@var{libsubdir}/include}. Headers for non-C runtime libraries are also installed by GCC; these are not documented here. (FIXME: document them somewhere.) @@ -351,8 +352,8 @@ representation of floating point numbers. GCC also installs its own version of @code{<limits.h>}; this is generated from @file{glimits.h}, together with @file{limitx.h} and @file{limity.h} if the system also has its own version of -@code{<limits.h>}. (GCC provides its own header because it is -required of ISO C freestanding implementations, but needs to include +@code{<limits.h>}. (GCC provides its own header because it does not +declare functions with external linkage, but needs to include the system header from its own header as well because other standards such as POSIX specify additional values to be defined in @code{<limits.h>}.) The system's @code{<limits.h>} header is used via @@ -1975,6 +1976,9 @@ at plain @option{-O2}. @item tls Target supports thread-local storage. +@item tls_link +Target supports linking TLS executables. + @item tls_native Target supports native (rather than emulated) thread-local storage. |