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suppressing -lm for g++ links
- To: egcs-patches at cygnus dot com
- Subject: suppressing -lm for g++ links
- From: Fred Fish <fnf at ninemoons dot com>
- Date: Fri, 26 Jun 1998 17:30:32 -0700 (MST)
- Cc: fnf at ninemoons dot com (Fred Fish)
BeOS does not have or need -lm. This is how I fixed it in my current
BeOS port:
Index: ChangeLog
===================================================================
RCS file: /cvsroot/gg/playpen/egcs/gcc/ChangeLog,v
retrieving revision 1.10
diff -c -r1.10 ChangeLog
*** ChangeLog 1998/06/25 18:28:40 1.10
--- ChangeLog 1998/06/27 00:26:53
***************
*** 1,3 ****
--- 1,7 ----
+ Fri Jun 26 15:57:15 1998 Fred Fish <fnf@ninemoons.com>
+
+ * config/i386/beos.h (NEED_MATH_LIBRARY): Define to zero.
+
Thu Jun 25 09:23:28 1998 Fred Fish <fnf@ninemoons.com>
* config/i386/beos.h (TARGET_DEFAULT): Enable MASK_STICKY_DLLIMPORT
Index: config/i386/beos.h
===================================================================
RCS file: /cvsroot/gg/playpen/egcs/gcc/config/i386/beos.h,v
retrieving revision 1.9
diff -c -r1.9 beos.h
*** beos.h 1998/06/25 18:28:44 1.9
--- beos.h 1998/06/27 00:26:56
***************
*** 396,398 ****
--- 396,401 ----
#define CC1_SPEC "%{!fbuiltin: -fno-builtin}"
#undef CC1PLUS_SPEC
#define CC1PLUS_SPEC "%{!fbuiltin: -fno-builtin}"
+
+ /* BeOS does not have or need the math library. */
+ #define NEED_MATH_LIBRARY 0
Index: cp/ChangeLog
===================================================================
RCS file: /cvsroot/gg/playpen/egcs/gcc/cp/ChangeLog,v
retrieving revision 1.2
diff -c -r1.2 ChangeLog
*** ChangeLog 1998/06/25 18:27:16 1.2
--- ChangeLog 1998/06/27 00:26:58
***************
*** 1,3 ****
--- 1,9 ----
+ Fri Jun 26 15:50:40 1998 Fred Fish <fnf@ninemoons.com>
+
+ * g++spec.c (NEED_MATH_LIBRARY): Define to 1 if not already defined.
+ (lang_specific_driver): Initialize need_math with NEED_MATH_LIBRARY.
+ (lang_specific_driver): Only add -lm automatically if need_math is nonzero.
+
Sat Jun 20 21:47:00 1998 Alastair J. Houghton <ajh8@doc.ic.ac.uk>
Changes to better support __attribute__ keyword:
Index: cp/g++spec.c
===================================================================
RCS file: /cvsroot/gg/playpen/egcs/gcc/cp/g++spec.c,v
retrieving revision 1.1.1.1
diff -c -r1.1.1.1 g++spec.c
*** g++spec.c 1998/06/02 17:47:00 1.1.1.1
--- g++spec.c 1998/06/27 00:26:58
***************
*** 34,39 ****
--- 34,42 ----
#ifndef MATH_LIBRARY
#define MATH_LIBRARY "-lm"
#endif
+ #ifndef NEED_MATH_LIBRARY
+ #define NEED_MATH_LIBRARY 1 /* Default is pass MATH_LIBRARY to linker */
+ #endif
extern char *xmalloc PROTO((size_t));
***************
*** 81,87 ****
int *args;
/* By default, we throw on the math library. */
! int need_math = 1;
/* The total number of arguments with the new stuff. */
int argc;
--- 84,90 ----
int *args;
/* By default, we throw on the math library. */
! int need_math = NEED_MATH_LIBRARY;
/* The total number of arguments with the new stuff. */
int argc;
***************
*** 241,247 ****
}
if (saw_math)
arglist[j++] = saw_math;
! else if (library)
{
arglist[j++] = MATH_LIBRARY;
added_libraries++;
--- 244,250 ----
}
if (saw_math)
arglist[j++] = saw_math;
! else if (library && need_math)
{
arglist[j++] = MATH_LIBRARY;
added_libraries++;