diff options
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 6f027b10788..3d321422a7f 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -609,6 +609,13 @@ and possibly @code{unix}; passing @code{_mips} defines @code{__mips}, @code{__mips__} and possibly @code{_mips}, and passing @code{_ABI64} defines only @code{_ABI64}. +You can also test for the C dialect being compiled. The variable +@code{c_language} is set to one of @code{clk_c}, @code{clk_cplusplus} +or @code{clk_objective_c}. Note that if we are preprocessing +assembler, this variable will be @code{clk_c} but the function-like +macro @code{preprocessing_asm_p()} will return true, so you might want +to check for that first. + With @code{TARGET_OS_CPP_BUILTINS} this macro obsoletes the @code{CPP_PREDEFINES} target macro. |