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| author | gjl <gjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-01-07 15:57:08 +0000 |
|---|---|---|
| committer | gjl <gjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-01-07 15:57:08 +0000 |
| commit | 67cec0000cd904bba3d6f568bec205bd86005c75 (patch) | |
| tree | a79c1f81c2a4306ab2b78b9659d72f09fa5dbbbb /gcc/doc/install.texi | |
| parent | 9de19dd2d2ec1d11a43577fd21490002365145f8 (diff) | |
| download | gcc-67cec0000cd904bba3d6f568bec205bd86005c75.tar.gz | |
PR target/PR54461
* doc/install.texi (Cross-Compiler-Specific Options): Document
--with-avrlibc.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194978 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/install.texi')
| -rw-r--r-- | gcc/doc/install.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 8273a87a361..dd28acc7515 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -1813,6 +1813,16 @@ being used as the target C library. This causes @code{__eprintf} to be omitted from @file{libgcc.a} on the assumption that it will be provided by @samp{newlib}. +@item --with-avrlibc +Specifies that @samp{AVR-Libc} is +being used as the target C library. This causes float support +functions like @code{__addsf3} to be omitted from @file{libgcc.a} on +the assumption that it will be provided by @file{libm.a}. For more +technical details, cf. @uref{http://gcc.gnu.org/PR54461,,PR54461}. +This option is only supported for the AVR target. It is not supported for +RTEMS configurations, which currently use newlib. The option is +supported since version 4.7.2 and is the default in 4.8.0 and newer. + @item --with-build-time-tools=@var{dir} Specifies where to find the set of target tools (assembler, linker, etc.) that will be used while building GCC itself. This option can be useful |