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gcc.c (LIBGCC_SPEC): If REAL_LIBGCC_SPEC is defined...

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* gcc.c (LIBGCC_SPEC): If REAL_LIBGCC_SPEC is defined, and
	LIBGCC_SPEC isn't, set LIBGCC_SPEC to REAL_LIBGCC_SPEC.
	(init_gcc_spec): Don't define or call if REAL_LIBGCC_SPEC is
	defined.  Instead use REAL_LIBGCC_SPEC, unmodifed, as the libgcc
	spec string.
	* doc/tm.texi (REAL_LIBGCC_SPEC): Document.

From-SVN: r78072
This commit is contained in:
Matt Austern 2004-02-19 05:52:38 +00:00 committed by Matt Austern
parent 23aa7aba4a
commit 328163dc0a
3 changed files with 27 additions and 4 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2003-02-18 Matt Austern <austern@apple.com>
* gcc.c (LIBGCC_SPEC): If REAL_LIBGCC_SPEC is defined, and
LIBGCC_SPEC isn't, set LIBGCC_SPEC to REAL_LIBGCC_SPEC.
(init_gcc_spec): Don't define or call if REAL_LIBGCC_SPEC is
defined. Instead use REAL_LIBGCC_SPEC, unmodifed, as the libgcc
spec string.
* doc/tm.texi (REAL_LIBGCC_SPEC): Document.
2004-02-18 Zack Weinberg <zack@codesourcery.com>
* dwarf2out.c (loclabel_num): Move outside #ifdef

12
gcc/doc/tm.texi
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@ -293,6 +293,18 @@ If this macro is not defined, the GCC driver provides a default that
passes the string @option{-lgcc} to the linker.
@end defmac
@defmac REAL_LIBGCC_SPEC
By default, if @code{ENABLE_SHARED_LIBGCC} is defined, the
@code{LIBGCC_SPEC} is not directly used by the driver program but is
instead modified to refer to different versions of @file{libgcc.a}
depending on the values of the command line flags @code{-static},
@code{-shared}, @code{-static-libgcc}, and @code{-shared-libgcc}. On
targets where these modifications are inappropriate, define
@code{REAL_LIBGCC_SPEC} instead. @code{REAL_LIBGCC_SPEC} tells the
driver how to place a reference to @file{libgcc} on the link command
line, but, unlike @code{LIBGCC_SPEC}, it is used unmodified.
@end defmac
@defmac STARTFILE_SPEC
Another C string constant used much like @code{LINK_SPEC}. The
difference between the two is that @code{STARTFILE_SPEC} is used at

10
gcc/gcc.c
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@ -345,7 +345,7 @@ static int execute (void);
static void alloc_args (void);
static void clear_args (void);
static void fatal_error (int);
#ifdef ENABLE_SHARED_LIBGCC
#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
static void init_gcc_specs (struct obstack *, const char *, const char *,
const char *);
#endif
@ -598,7 +598,9 @@ proper position among the other output files. */
/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
included. */
#ifndef LIBGCC_SPEC
#if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
#if defined(REAL_LIBGCC_SPEC)
#define LIBGCC_SPEC REAL_LIBGCC_SPEC
#elif defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
/* Have gcc do the search for libgcc.a. */
#define LIBGCC_SPEC "libgcc.a%s"
#else
@ -1522,7 +1524,7 @@ static int processing_spec_function;
/* Add appropriate libgcc specs to OBSTACK, taking into account
various permutations of -shared-libgcc, -shared, and such. */
#ifdef ENABLE_SHARED_LIBGCC
#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
static void
init_gcc_specs (struct obstack *obstack, const char *shared_name,
const char *static_name, const char *eh_name)
@ -1589,7 +1591,7 @@ init_spec (void)
next = sl;
}
#ifdef ENABLE_SHARED_LIBGCC
#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
/* ??? If neither -shared-libgcc nor --static-libgcc was
seen, then we should be making an educated guess. Some proposed
heuristics for ELF include: