Re: [Patch darwin, ppc] lgcc to provide save/restFP for pre-exisitng libraries.

[IainS <developer at sandoe-acoustics dot co dot uk>]

On 20 Aug 2010, at 16:48, Mike Stump wrote:

> On Aug 20, 2010, at 5:46 AM, IainS wrote:
> > OK for trunk & 4.5 ? (since this is not a reversion - but an  
> > additional patch).
>
> Ok.

It turns out that this is not enough - the cascading of rs6000/darwin{, 
7,8}.h needs to be tidied up :-(

Until I have a change to do that and bootstrap on darwin 8  - I've  
reverted this change and partially reverted r163267.

sorry for the breakage,
Iain

applied as 163419:

gcc/

	revert r163410, partially revert r163267.
	* config/rs6000/darwin.h (LIB_SPEC): Remove.
	* config/darwin.h (REAL_LIBGCC_SPEC): Link lgcc for all
	Darwin versions.

Index: gcc/config/darwin.h
===================================================================
--- gcc/config/darwin.h (revision 163418)
+++ gcc/config/darwin.h (working copy)
@@ -412,12 +412,12 @@ extern GTY(()) int darwin_ms_struct;
        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s. 
10.5)   \
        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext. 
10.4)     \
        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext. 
10.5)     \
-       %:version-compare(< 10.5 mmacosx-version-min= - 
lgcc) ;             \
+       - 
lgcc ;                                                            \
       :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s. 
10.4) \
        %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lgcc_s. 
10.5)   \
        %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_ext. 
10.4)     \
        %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_ext. 
10.5)     \

-       %:version-compare(< 10.5 mmacosx-version-min= -lgcc) }"
+       -lgcc }"

 /* We specify crt0.o as -lcrt0.o so that ld will search the library  
path.

Index: gcc/config/rs6000/darwin.h
===================================================================
--- gcc/config/rs6000/darwin.h  (revision 163418)
+++ gcc/config/rs6000/darwin.h  (working copy)
@@ -120,11 +120,6 @@ extern int darwin_emit_branch_islands;
    mcpu=G5:ppc970;                             \
    :ppc}}"

-/* Linked libs might refer to save/restFP - we still need to append - 
lgcc to
-   provide these.  */
-#undef LIB_SPEC
-#define LIB_SPEC "%{!static:-lgcc -lSystem}"
-
 /* crt2.o is at least partially required for 10.3.x and earlier.  */
 #define DARWIN_CRT2_SPEC \
   "%{!m64:%:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s)}"