* Compilation for mips-mti-elf fails
@ 2021-11-25 21:04 Marian Buschsieweke
2021-11-29 23:27 ` Jeff Johnston
0 siblings, 1 reply; 3+ messages in thread
From: Marian Buschsieweke @ 2021-11-25 21:04 UTC (permalink / raw)
To: newlib
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Hi,
compiling for newlib with GCC 11.2.0 for mips-mti-elf with multilib
now fails with "Error: unrecognized opcode `cfc1 $3,$31'" while compiling
newlib/libm/machine/mips/fenv.c
More precisely, newlib/libc/machine/mips/machine/fenv-fp.h included by fenv.c
contains multiple calls of the function line macro __cfc1() which is defined in
newlib/libc/machine/mips/sys/fenv.h as
#define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr))
Apparently, this is not compatible with mips16. Adding -mno-mips16 to the
invocation of the compiler fixes the comiplation. (The same was already done for
cma101.c and cygmon.c in libgloss.)
Attached is a potential fix.
Kind regards,
Marian
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1.2: fix-mips-mti-elf.patch --]
[-- Type: text/x-patch, Size: 1439 bytes --]
The code accessing the floating point control/status register, namely
#define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr)
does not compile with mips16. This changed the makefile to pass -mno-mips16 to avoid the following
compiler error:
mips-mti-elf fails with "Error: unrecognized opcode `cfc1 $3,$31'"
--- newlib-4.1.0/newlib/libm/machine/mips/Makefile.in.orig 2021-11-12 11:49:11.691337941 +0100
+++ newlib-4.1.0/newlib/libm/machine/mips/Makefile.in 2021-11-12 11:48:21.181600000 +0100
@@ -349,7 +349,7 @@ lib_a-feupdateenv.obj: feupdateenv.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-feupdateenv.obj `if test -f 'feupdateenv.c'; then $(CYGPATH_W) 'feupdateenv.c'; else $(CYGPATH_W) '$(srcdir)/feupdateenv.c'; fi`
lib_a-fenv.o: fenv.c
- $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.o `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -mno-mips16 -c -o lib_a-fenv.o `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
lib_a-fenv.obj: fenv.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.obj `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Compilation for mips-mti-elf fails
2021-11-25 21:04 Compilation for mips-mti-elf fails Marian Buschsieweke
@ 2021-11-29 23:27 ` Jeff Johnston
2022-02-07 6:42 ` Mike Frysinger
0 siblings, 1 reply; 3+ messages in thread
From: Jeff Johnston @ 2021-11-29 23:27 UTC (permalink / raw)
To: Marian Buschsieweke; +Cc: Newlib
[-- Attachment #1: Type: text/plain, Size: 1085 bytes --]
Hi Marian,
Thanks for the patch. That directory has a Makefile.am file so it must be
modified and the Makefile.in generated.
I have included a modified version of your patch. If you have no
objections, I'll check it in.
Regards,
-- Jeff J.
On Thu, Nov 25, 2021 at 4:04 PM Marian Buschsieweke <
marian.buschsieweke@ovgu.de> wrote:
> Hi,
>
> compiling for newlib with GCC 11.2.0 for mips-mti-elf with multilib
> now fails with "Error: unrecognized opcode `cfc1 $3,$31'" while compiling
> newlib/libm/machine/mips/fenv.c
>
> More precisely, newlib/libc/machine/mips/machine/fenv-fp.h included by
> fenv.c
> contains multiple calls of the function line macro __cfc1() which is
> defined in
> newlib/libc/machine/mips/sys/fenv.h as
>
> #define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r"
> (__fcsr))
>
> Apparently, this is not compatible with mips16. Adding -mno-mips16 to the
> invocation of the compiler fixes the comiplation. (The same was already
> done for
> cma101.c and cygmon.c in libgloss.)
>
> Attached is a potential fix.
>
> Kind regards,
> Marian
>
[-- Attachment #2: 0001-Modifying-patch-from-marian.buschsieweke-ovgu.de.patch --]
[-- Type: text/x-patch, Size: 5011 bytes --]
From f3df3e145d1b2a54a248db3a2a68271664dde86c Mon Sep 17 00:00:00 2001
From: Jeff Johnston <jjohnstn@redhat.com>
Date: Mon, 29 Nov 2021 17:33:52 -0500
Subject: [PATCH] Modifying patch from: marian.buschsieweke@ovgu.de
The code accessing the floating point control/status register, namely
#define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr)
does not compile with mips16. This changed the makefile to pass -mno-mips16 to avoid the following
compiler error:
mips-mti-elf fails with "Error: unrecognized opcode `cfc1 $3,$31'"
---
newlib/libm/machine/mips/Makefile.am | 12 ++++++++++--
newlib/libm/machine/mips/Makefile.in | 21 ++++++++++++---------
2 files changed, 22 insertions(+), 11 deletions(-)
diff --git a/newlib/libm/machine/mips/Makefile.am b/newlib/libm/machine/mips/Makefile.am
index bb142a6..cef4957 100644
--- a/newlib/libm/machine/mips/Makefile.am
+++ b/newlib/libm/machine/mips/Makefile.am
@@ -6,8 +6,7 @@ INCLUDES = -I $(newlib_basedir)/../newlib/libm/common $(NEWLIB_CFLAGS) \
LIB_SOURCES = \
feclearexcept.c fegetenv.c fegetexceptflag.c \
fegetround.c feholdexcept.c feraiseexcept.c fesetenv.c \
- fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c \
- fenv.c
+ fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c
noinst_LIBRARIES = lib.a
lib_a_SOURCES = $(LIB_SOURCES)
@@ -17,5 +16,14 @@ noinst_DATA =
include $(srcdir)/../../../Makefile.shared
+LIBADD_OBJS = \
+ lib_a-fenv.$(OBJEXT)
+
+lib_a-fenv.o: fenv.c
+ $(COMPILE) -mno-mips16 -c -o $@ `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
+
+lib_a-fenv.obj: fenv.c
+ $(COMPILE) -mno-mips16 -c -o $@ `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
+
ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
diff --git a/newlib/libm/machine/mips/Makefile.in b/newlib/libm/machine/mips/Makefile.in
index 2a42145..cfab717 100644
--- a/newlib/libm/machine/mips/Makefile.in
+++ b/newlib/libm/machine/mips/Makefile.in
@@ -75,7 +75,7 @@ am__objects_1 = lib_a-feclearexcept.$(OBJEXT) lib_a-fegetenv.$(OBJEXT) \
lib_a-feholdexcept.$(OBJEXT) lib_a-feraiseexcept.$(OBJEXT) \
lib_a-fesetenv.$(OBJEXT) lib_a-fesetexceptflag.$(OBJEXT) \
lib_a-fesetround.$(OBJEXT) lib_a-fetestexcept.$(OBJEXT) \
- lib_a-feupdateenv.$(OBJEXT) lib_a-fenv.$(OBJEXT)
+ lib_a-feupdateenv.$(OBJEXT)
am_lib_a_OBJECTS = $(am__objects_1)
lib_a_OBJECTS = $(am_lib_a_OBJECTS)
DEFAULT_INCLUDES = -I.@am__isrc@
@@ -189,6 +189,7 @@ prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
+shared_machine_dir = @shared_machine_dir@
sharedstatedir = @sharedstatedir@
srcdir = @srcdir@
sys_dir = @sys_dir@
@@ -203,8 +204,7 @@ INCLUDES = -I $(newlib_basedir)/../newlib/libm/common $(NEWLIB_CFLAGS) \
LIB_SOURCES = \
feclearexcept.c fegetenv.c fegetexceptflag.c \
fegetround.c feholdexcept.c feraiseexcept.c fesetenv.c \
- fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c \
- fenv.c
+ fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c
noinst_LIBRARIES = lib.a
lib_a_SOURCES = $(LIB_SOURCES)
@@ -221,6 +221,9 @@ DOCBOOK_CHEW = ${top_srcdir}/../doc/makedocbook.py
DOCBOOK_OUT_FILES = $(CHEWOUT_FILES:.def=.xml)
DOCBOOK_CHAPTERS = $(CHAPTERS:.tex=.xml)
CLEANFILES = $(CHEWOUT_FILES) $(DOCBOOK_OUT_FILES)
+LIBADD_OBJS = \
+ lib_a-fenv.$(OBJEXT)
+
ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
all: all-am
@@ -348,12 +351,6 @@ lib_a-feupdateenv.o: feupdateenv.c
lib_a-feupdateenv.obj: feupdateenv.c
$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-feupdateenv.obj `if test -f 'feupdateenv.c'; then $(CYGPATH_W) 'feupdateenv.c'; else $(CYGPATH_W) '$(srcdir)/feupdateenv.c'; fi`
-lib_a-fenv.o: fenv.c
- $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.o `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
-
-lib_a-fenv.obj: fenv.c
- $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.obj `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
-
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
@@ -554,6 +551,12 @@ docbook: $(DOCBOOK_OUT_FILES)
${top_srcdir}/../doc/chapter-texi2docbook.py <$(srcdir)/$${chapter%.xml}.tex >../$$chapter ; \
done
+lib_a-fenv.o: fenv.c
+ $(COMPILE) -mno-mips16 -c -o $@ `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
+
+lib_a-fenv.obj: fenv.c
+ $(COMPILE) -mno-mips16 -c -o $@ `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
+
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:
--
1.8.3.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Compilation for mips-mti-elf fails
2021-11-29 23:27 ` Jeff Johnston
@ 2022-02-07 6:42 ` Mike Frysinger
0 siblings, 0 replies; 3+ messages in thread
From: Mike Frysinger @ 2022-02-07 6:42 UTC (permalink / raw)
To: Jeff Johnston; +Cc: Marian Buschsieweke, Newlib, Joel Sherrill
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On 29 Nov 2021 18:27, Jeff Johnston wrote:
> Thanks for the patch. That directory has a Makefile.am file so it must be
> modified and the Makefile.in generated.
> I have included a modified version of your patch. If you have no
> objections, I'll check it in.
this change doesn't make sense to me. it moves fenv.o out of lib_a_OBJECTS
(which is used to create lib.a in this subdir) and into a new LIBADD_OBJS.
but LIBADD_OBJS isn't used anywhere that i can see. did you mean to write
lib_a_LIBADD instead ?
Joel is reporting problems w/RTEMS due to this change.
--- a/newlib/libm/machine/mips/Makefile.am
+++ b/newlib/libm/machine/mips/Makefile.am
@@ -15,7 +15,7 @@ noinst_DATA =
include $(srcdir)/../../../Makefile.shared
-LIBADD_OBJS = \
+lib_a_LIBADD = \
lib_a-fenv.$(OBJEXT)
# fenv.c cannot be compiled as mips16 since it uses the cfc1 instruction
--- a/newlib/libm/machine/mips/Makefile.in
+++ b/newlib/libm/machine/mips/Makefile.in
@@ -115,7 +115,7 @@ am__v_AR_ = $(am__v_AR_@AM_DEFAULT_V@)
am__v_AR_0 = @echo " AR " $@;
am__v_AR_1 =
lib_a_AR = $(AR) $(ARFLAGS)
-lib_a_LIBADD =
+lib_a_DEPENDENCIES = lib_a-fenv.$(OBJEXT)
am__objects_1 = lib_a-feclearexcept.$(OBJEXT) lib_a-fegetenv.$(OBJEXT) \
lib_a-fegetexceptflag.$(OBJEXT) lib_a-fegetround.$(OBJEXT) \
lib_a-feholdexcept.$(OBJEXT) lib_a-feraiseexcept.$(OBJEXT) \
@@ -329,7 +329,7 @@ noinst_LIBRARIES = lib.a
lib_a_SOURCES = $(LIB_SOURCES)
lib_a_CFLAGS = $(AM_CFLAGS)
noinst_DATA =
-LIBADD_OBJS = \
+lib_a_LIBADD = \
lib_a-fenv.$(OBJEXT)
all: all-am
-mike
> On Thu, Nov 25, 2021 at 4:04 PM Marian Buschsieweke <
> marian.buschsieweke@ovgu.de> wrote:
>
> > Hi,
> >
> > compiling for newlib with GCC 11.2.0 for mips-mti-elf with multilib
> > now fails with "Error: unrecognized opcode `cfc1 $3,$31'" while compiling
> > newlib/libm/machine/mips/fenv.c
> >
> > More precisely, newlib/libc/machine/mips/machine/fenv-fp.h included by
> > fenv.c
> > contains multiple calls of the function line macro __cfc1() which is
> > defined in
> > newlib/libc/machine/mips/sys/fenv.h as
> >
> > #define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r"
> > (__fcsr))
> >
> > Apparently, this is not compatible with mips16. Adding -mno-mips16 to the
> > invocation of the compiler fixes the comiplation. (The same was already
> > done for
> > cma101.c and cygmon.c in libgloss.)
> >
> > Attached is a potential fix.
> >
> > Kind regards,
> > Marian
> >
> From f3df3e145d1b2a54a248db3a2a68271664dde86c Mon Sep 17 00:00:00 2001
> From: Jeff Johnston <jjohnstn@redhat.com>
> Date: Mon, 29 Nov 2021 17:33:52 -0500
> Subject: [PATCH] Modifying patch from: marian.buschsieweke@ovgu.de
>
> The code accessing the floating point control/status register, namely
>
> #define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr)
>
> does not compile with mips16. This changed the makefile to pass -mno-mips16 to avoid the following
> compiler error:
>
> mips-mti-elf fails with "Error: unrecognized opcode `cfc1 $3,$31'"
> ---
> newlib/libm/machine/mips/Makefile.am | 12 ++++++++++--
> newlib/libm/machine/mips/Makefile.in | 21 ++++++++++++---------
> 2 files changed, 22 insertions(+), 11 deletions(-)
>
> diff --git a/newlib/libm/machine/mips/Makefile.am b/newlib/libm/machine/mips/Makefile.am
> index bb142a6..cef4957 100644
> --- a/newlib/libm/machine/mips/Makefile.am
> +++ b/newlib/libm/machine/mips/Makefile.am
> @@ -6,8 +6,7 @@ INCLUDES = -I $(newlib_basedir)/../newlib/libm/common $(NEWLIB_CFLAGS) \
> LIB_SOURCES = \
> feclearexcept.c fegetenv.c fegetexceptflag.c \
> fegetround.c feholdexcept.c feraiseexcept.c fesetenv.c \
> - fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c \
> - fenv.c
> + fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c
>
> noinst_LIBRARIES = lib.a
> lib_a_SOURCES = $(LIB_SOURCES)
> @@ -17,5 +16,14 @@ noinst_DATA =
>
> include $(srcdir)/../../../Makefile.shared
>
> +LIBADD_OBJS = \
> + lib_a-fenv.$(OBJEXT)
> +
> +lib_a-fenv.o: fenv.c
> + $(COMPILE) -mno-mips16 -c -o $@ `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
> +
> +lib_a-fenv.obj: fenv.c
> + $(COMPILE) -mno-mips16 -c -o $@ `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
> +
> ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
> CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
> diff --git a/newlib/libm/machine/mips/Makefile.in b/newlib/libm/machine/mips/Makefile.in
> index 2a42145..cfab717 100644
> --- a/newlib/libm/machine/mips/Makefile.in
> +++ b/newlib/libm/machine/mips/Makefile.in
> @@ -75,7 +75,7 @@ am__objects_1 = lib_a-feclearexcept.$(OBJEXT) lib_a-fegetenv.$(OBJEXT) \
> lib_a-feholdexcept.$(OBJEXT) lib_a-feraiseexcept.$(OBJEXT) \
> lib_a-fesetenv.$(OBJEXT) lib_a-fesetexceptflag.$(OBJEXT) \
> lib_a-fesetround.$(OBJEXT) lib_a-fetestexcept.$(OBJEXT) \
> - lib_a-feupdateenv.$(OBJEXT) lib_a-fenv.$(OBJEXT)
> + lib_a-feupdateenv.$(OBJEXT)
> am_lib_a_OBJECTS = $(am__objects_1)
> lib_a_OBJECTS = $(am_lib_a_OBJECTS)
> DEFAULT_INCLUDES = -I.@am__isrc@
> @@ -189,6 +189,7 @@ prefix = @prefix@
> program_transform_name = @program_transform_name@
> psdir = @psdir@
> sbindir = @sbindir@
> +shared_machine_dir = @shared_machine_dir@
> sharedstatedir = @sharedstatedir@
> srcdir = @srcdir@
> sys_dir = @sys_dir@
> @@ -203,8 +204,7 @@ INCLUDES = -I $(newlib_basedir)/../newlib/libm/common $(NEWLIB_CFLAGS) \
> LIB_SOURCES = \
> feclearexcept.c fegetenv.c fegetexceptflag.c \
> fegetround.c feholdexcept.c feraiseexcept.c fesetenv.c \
> - fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c \
> - fenv.c
> + fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c
>
> noinst_LIBRARIES = lib.a
> lib_a_SOURCES = $(LIB_SOURCES)
> @@ -221,6 +221,9 @@ DOCBOOK_CHEW = ${top_srcdir}/../doc/makedocbook.py
> DOCBOOK_OUT_FILES = $(CHEWOUT_FILES:.def=.xml)
> DOCBOOK_CHAPTERS = $(CHAPTERS:.tex=.xml)
> CLEANFILES = $(CHEWOUT_FILES) $(DOCBOOK_OUT_FILES)
> +LIBADD_OBJS = \
> + lib_a-fenv.$(OBJEXT)
> +
> ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
> CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
> all: all-am
> @@ -348,12 +351,6 @@ lib_a-feupdateenv.o: feupdateenv.c
> lib_a-feupdateenv.obj: feupdateenv.c
> $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-feupdateenv.obj `if test -f 'feupdateenv.c'; then $(CYGPATH_W) 'feupdateenv.c'; else $(CYGPATH_W) '$(srcdir)/feupdateenv.c'; fi`
>
> -lib_a-fenv.o: fenv.c
> - $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.o `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
> -
> -lib_a-fenv.obj: fenv.c
> - $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fenv.obj `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
> -
> ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
> list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
> unique=`for i in $$list; do \
> @@ -554,6 +551,12 @@ docbook: $(DOCBOOK_OUT_FILES)
> ${top_srcdir}/../doc/chapter-texi2docbook.py <$(srcdir)/$${chapter%.xml}.tex >../$$chapter ; \
> done
>
> +lib_a-fenv.o: fenv.c
> + $(COMPILE) -mno-mips16 -c -o $@ `test -f 'fenv.c' || echo '$(srcdir)/'`fenv.c
> +
> +lib_a-fenv.obj: fenv.c
> + $(COMPILE) -mno-mips16 -c -o $@ `if test -f 'fenv.c'; then $(CYGPATH_W) 'fenv.c'; else $(CYGPATH_W) '$(srcdir)/fenv.c'; fi`
> +
> # Tell versions [3.59,3.63) of GNU make to not export all variables.
> # Otherwise a system limit (for SysV at least) may be exceeded.
> .NOEXPORT:
> --
> 1.8.3.1
>
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