| Message ID | 20140418095246.GA28398@atmel.com |
|---|---|
| State | New |
| Headers | show |
Ping! Regards Senthil On Fri, Apr 18, 2014 at 03:22:46PM +0530, Senthil Kumar Selvaraj wrote: > > On Sat, Apr 12, 2014 at 06:36:01PM +0200, Georg-Johann Lay wrote: > > Senthil Kumar Selvaraj schrieb: > > >This patch modifies AVR target's ASM spec to pass -mlink-relax to the > > >assembler if -mrelax is passed to the compiler driver. This was already > > >being passed on to the linker, this patch merely makes the assembler > > >also aware of it. > > > > > >The corresponding patch in binutils to handle the -mlink-relax patch is > > >already committed in the binutils repo. I'm not sure how to manage a > > >running a newer gcc with an older version of binutils though - how is this > > >generally handled? > > > > The right place is gcc/configure.ac and have a macro defined depending on > > whether gas supports -mlink-relax. > > > > > > Same should be done for -mrmw, IMO, for similar reasons, e.g. something like > > > > case "$target" in > > ... > > avr-*-*) > > ... > > gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, > > [-mrmw], [.text],, > > [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, > > [Define if your assembler supports -mrmw option.])]) > > > > or > > > > gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, > > [-mrmw], [.text],,,) > > if test x$gcc_cv_as_avr_mrmw = xyes; then > > AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, > > [Define if your assembler supports the -mrmw option.]) > > > > Thanks Johann. The below patch adds the configury check for -mlink-relax, > along with the change to ASM_SPEC to propagate the -mrelax flag. I > modified the original patch a bit to make it easier to handle > conditional additions to SPECs (inspired by the sparc target). > > > > > However, the gcc-4_9-branch has already been created... > > Yes, but I figured it would be useful anyway - if this eventually gets > backported to 4_9, for example. > > If the below patch looks ok, could someone commit please? I don't have > commit access. > > Regards > Senthil > > gcc/ChangeLog > > 2014-04-18 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> > > * config/avr/avr.h: Pass on mlink-relax to assembler. > * configure.ac: Test for mlink-relax support in assembler. > * configure: Regenerate. > > diff --git gcc/config/avr/avr.h gcc/config/avr/avr.h > index 78434ec..b4e3eb1 100644 > --- gcc/config/avr/avr.h > +++ gcc/config/avr/avr.h > @@ -512,7 +512,28 @@ extern const char *avr_device_to_sp8 (int argc, const char **argv); > %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ > %{!fexceptions:-fno-exceptions}" > > -#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*}) " > +#ifdef HAVE_AS_RELAX_OPTION > +#define ASM_RELAX_SPEC "%{mrelax:-mlink-relax}" > +#else > +#define ASM_RELAX_SPEC "" > +#endif > + > +#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*})\ > +%(asm_relax)" > + > +/* This macro defines names of additional specifications to put in the specs > + that can be used in various specifications like CC1_SPEC. Its definition > + is an initializer with a subgrouping for each command option. > + > + Each subgrouping contains a string constant, that defines the > + specification name, and a string constant that used by the GCC driver > + program. > + > + Do not define this macro if it does not need to do anything. */ > + > +#define EXTRA_SPECS \ > + { "asm_relax", ASM_RELAX_SPEC } > + > > #define LINK_SPEC "\ > %{mrelax:--relax\ > diff --git gcc/configure gcc/configure > index bfb1525..7815038 100755 > --- gcc/configure > +++ gcc/configure > @@ -24142,6 +24142,39 @@ $as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h > fi > ;; > > + avr-*-*) > + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mlink-relax option" >&5 > +$as_echo_n "checking assembler for -mlink-relax option... " >&6; } > +if test "${gcc_cv_as_avr_relax+set}" = set; then : > + $as_echo_n "(cached) " >&6 > +else > + gcc_cv_as_avr_relax=no > + if test x$gcc_cv_as != x; then > + $as_echo '.text' > conftest.s > + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mlink-relax -o conftest.o conftest.s >&5' > + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 > + (eval $ac_try) 2>&5 > + ac_status=$? > + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 > + test $ac_status = 0; }; } > + then > + gcc_cv_as_avr_relax=yes > + else > + echo "configure: failed program was" >&5 > + cat conftest.s >&5 > + fi > + rm -f conftest.o conftest.s > + fi > +fi > +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_relax" >&5 > +$as_echo "$gcc_cv_as_avr_relax" >&6; } > +if test $gcc_cv_as_avr_relax = yes; then > + > +$as_echo "#define HAVE_AS_RELAX_OPTION 1" >>confdefs.h > + > +fi > + ;; > + > cris-*-*) > { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -no-mul-bug-abort option" >&5 > $as_echo_n "checking assembler for -no-mul-bug-abort option... " >&6; } > diff --git gcc/configure.ac gcc/configure.ac > index d7cae6c..cfa862d 100644 > --- gcc/configure.ac > +++ gcc/configure.ac > @@ -3579,6 +3579,13 @@ case "$target" in > [Define if your assembler supports the lituse_jsrdirect relocation.])]) > ;; > > + avr-*-*) > + gcc_GAS_CHECK_FEATURE([-mlink-relax option], gcc_cv_as_avr_relax,, > + [-mlink-relax], [.text],, > + [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, > + [Define if your assembler supports -mlink-relax option.])]) > + ;; > + > cris-*-*) > gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], > gcc_cv_as_cris_no_mul_bug,[2,15,91],
Am 04/18/2014 11:52 AM, schrieb Senthil Kumar Selvaraj: > > On Sat, Apr 12, 2014 at 06:36:01PM +0200, Georg-Johann Lay wrote: >> Senthil Kumar Selvaraj schrieb: >>> This patch modifies AVR target's ASM spec to pass -mlink-relax to the >>> assembler if -mrelax is passed to the compiler driver. This was already >>> being passed on to the linker, this patch merely makes the assembler >>> also aware of it. >>> >>> The corresponding patch in binutils to handle the -mlink-relax patch is >>> already committed in the binutils repo. I'm not sure how to manage a >>> running a newer gcc with an older version of binutils though - how is this >>> generally handled? >> >> The right place is gcc/configure.ac and have a macro defined depending on >> whether gas supports -mlink-relax. >> >> >> Same should be done for -mrmw, IMO, for similar reasons, e.g. something like >> >> case "$target" in >> ... >> avr-*-*) >> ... >> gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, >> [-mrmw], [.text],, >> [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, >> [Define if your assembler supports -mrmw option.])]) >> >> or >> >> gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, >> [-mrmw], [.text],,,) >> if test x$gcc_cv_as_avr_mrmw = xyes; then >> AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, >> [Define if your assembler supports the -mrmw option.]) >> > > Thanks Johann. The below patch adds the configury check for -mlink-relax, > along with the change to ASM_SPEC to propagate the -mrelax flag. I > modified the original patch a bit to make it easier to handle > conditional additions to SPECs (inspired by the sparc target). > >> >> However, the gcc-4_9-branch has already been created... > > Yes, but I figured it would be useful anyway - if this eventually gets > backported to 4_9, for example. > > If the below patch looks ok, could someone commit please? I don't have > commit access. > > Regards > Senthil > > gcc/ChangeLog > > 2014-04-18 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> > > * config/avr/avr.h: Pass on mlink-relax to assembler. > * configure.ac: Test for mlink-relax support in assembler. > * configure: Regenerate. > > diff --git gcc/config/avr/avr.h gcc/config/avr/avr.h > index 78434ec..b4e3eb1 100644 > --- gcc/config/avr/avr.h > +++ gcc/config/avr/avr.h > @@ -512,7 +512,28 @@ extern const char *avr_device_to_sp8 (int argc, const char **argv); > %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ > %{!fexceptions:-fno-exceptions}" > > -#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*}) " > +#ifdef HAVE_AS_RELAX_OPTION > +#define ASM_RELAX_SPEC "%{mrelax:-mlink-relax}" > +#else > +#define ASM_RELAX_SPEC "" > +#endif > + > +#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*})\ > +%(asm_relax)" > + > +/* This macro defines names of additional specifications to put in the specs > + that can be used in various specifications like CC1_SPEC. Its definition > + is an initializer with a subgrouping for each command option. > + > + Each subgrouping contains a string constant, that defines the > + specification name, and a string constant that used by the GCC driver > + program. > + > + Do not define this macro if it does not need to do anything. */ > + > +#define EXTRA_SPECS \ > + { "asm_relax", ASM_RELAX_SPEC } > + Hi, wouldn't it be easier to add just a line to driver-avr.c:avr_device_to_as ? > > #define LINK_SPEC "\ > %{mrelax:--relax\ > diff --git gcc/configure gcc/configure > index bfb1525..7815038 100755 > --- gcc/configure > +++ gcc/configure > @@ -24142,6 +24142,39 @@ $as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h > fi > ;; > > + avr-*-*) > + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mlink-relax option" >&5 > +$as_echo_n "checking assembler for -mlink-relax option... " >&6; } > +if test "${gcc_cv_as_avr_relax+set}" = set; then : > + $as_echo_n "(cached) " >&6 > +else > + gcc_cv_as_avr_relax=no > + if test x$gcc_cv_as != x; then > + $as_echo '.text' > conftest.s > + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mlink-relax -o conftest.o conftest.s >&5' > + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 > + (eval $ac_try) 2>&5 > + ac_status=$? > + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 > + test $ac_status = 0; }; } > + then > + gcc_cv_as_avr_relax=yes > + else > + echo "configure: failed program was" >&5 > + cat conftest.s >&5 > + fi > + rm -f conftest.o conftest.s > + fi > +fi > +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_relax" >&5 > +$as_echo "$gcc_cv_as_avr_relax" >&6; } > +if test $gcc_cv_as_avr_relax = yes; then > + > +$as_echo "#define HAVE_AS_RELAX_OPTION 1" >>confdefs.h > + > +fi > + ;; > + > cris-*-*) > { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -no-mul-bug-abort option" >&5 > $as_echo_n "checking assembler for -no-mul-bug-abort option... " >&6; } > diff --git gcc/configure.ac gcc/configure.ac > index d7cae6c..cfa862d 100644 > --- gcc/configure.ac > +++ gcc/configure.ac > @@ -3579,6 +3579,13 @@ case "$target" in > [Define if your assembler supports the lituse_jsrdirect relocation.])]) > ;; > > + avr-*-*) > + gcc_GAS_CHECK_FEATURE([-mlink-relax option], gcc_cv_as_avr_relax,, > + [-mlink-relax], [.text],, > + [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, IMO this is very confusing naming - The gas option is not "relax" but "link-relax" - The option is avr specific, thus in order to avoid naming clashes the variable(s) should be named something like HAVE_AS_AVR_LINK_RELAX_OPTION > + [Define if your assembler supports -mlink-relax option.])]) > + ;; > + > cris-*-*) > gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], > gcc_cv_as_cris_no_mul_bug,[2,15,91], > Johann
On Mon, May 12, 2014 at 01:19:37PM +0200, Georg-Johann Lay wrote: > Am 04/18/2014 11:52 AM, schrieb Senthil Kumar Selvaraj: > > > >On Sat, Apr 12, 2014 at 06:36:01PM +0200, Georg-Johann Lay wrote: > >>Senthil Kumar Selvaraj schrieb: > >>>This patch modifies AVR target's ASM spec to pass -mlink-relax to the > >>>assembler if -mrelax is passed to the compiler driver. This was already > >>>being passed on to the linker, this patch merely makes the assembler > >>>also aware of it. > >>> > >>>The corresponding patch in binutils to handle the -mlink-relax patch is > >>>already committed in the binutils repo. I'm not sure how to manage a > >>>running a newer gcc with an older version of binutils though - how is this > >>>generally handled? > >> > >>The right place is gcc/configure.ac and have a macro defined depending on > >>whether gas supports -mlink-relax. > >> > >> > >>Same should be done for -mrmw, IMO, for similar reasons, e.g. something like > >> > >>case "$target" in > >> ... > >> avr-*-*) > >> ... > >> gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, > >> [-mrmw], [.text],, > >> [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, > >> [Define if your assembler supports -mrmw option.])]) > >> > >>or > >> > >> gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, > >> [-mrmw], [.text],,,) > >> if test x$gcc_cv_as_avr_mrmw = xyes; then > >> AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, > >> [Define if your assembler supports the -mrmw option.]) > >> > > > >Thanks Johann. The below patch adds the configury check for -mlink-relax, > >along with the change to ASM_SPEC to propagate the -mrelax flag. I > >modified the original patch a bit to make it easier to handle > >conditional additions to SPECs (inspired by the sparc target). > > > >> > >>However, the gcc-4_9-branch has already been created... > > > >Yes, but I figured it would be useful anyway - if this eventually gets > >backported to 4_9, for example. > > > >If the below patch looks ok, could someone commit please? I don't have > >commit access. > > > >Regards > >Senthil > > > >gcc/ChangeLog > > > >2014-04-18 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> > > > > * config/avr/avr.h: Pass on mlink-relax to assembler. > > * configure.ac: Test for mlink-relax support in assembler. > > * configure: Regenerate. > > > >diff --git gcc/config/avr/avr.h gcc/config/avr/avr.h > >index 78434ec..b4e3eb1 100644 > >--- gcc/config/avr/avr.h > >+++ gcc/config/avr/avr.h > >@@ -512,7 +512,28 @@ extern const char *avr_device_to_sp8 (int argc, const char **argv); > > %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ > > %{!fexceptions:-fno-exceptions}" > > > >-#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*}) " > >+#ifdef HAVE_AS_RELAX_OPTION > >+#define ASM_RELAX_SPEC "%{mrelax:-mlink-relax}" > >+#else > >+#define ASM_RELAX_SPEC "" > >+#endif > >+ > >+#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*})\ > >+%(asm_relax)" > >+ > >+/* This macro defines names of additional specifications to put in the specs > >+ that can be used in various specifications like CC1_SPEC. Its definition > >+ is an initializer with a subgrouping for each command option. > >+ > >+ Each subgrouping contains a string constant, that defines the > >+ specification name, and a string constant that used by the GCC driver > >+ program. > >+ > >+ Do not define this macro if it does not need to do anything. */ > >+ > >+#define EXTRA_SPECS \ > >+ { "asm_relax", ASM_RELAX_SPEC } > >+ > > Hi, wouldn't it be easier to add just a line to driver-avr.c:avr_device_to_as ? Well, I couldn't figure out how to do it without passing in the nested spec and then do argument checking inside avr_device_to_as. Something like #define ASM_SPEC "%:device_to_as(%{mmcu=*:%*} %{mrelax:-mlink-relax})" and then handle argc==0, 1 and 2 cases by strcmp'ing against -mlink-relax if HAVE_AVR_AS_LINK_RELAX_OPTION. Did I miss something? > > > > > #define LINK_SPEC "\ > > %{mrelax:--relax\ > >diff --git gcc/configure gcc/configure > >index bfb1525..7815038 100755 > >--- gcc/configure > >+++ gcc/configure > >@@ -24142,6 +24142,39 @@ $as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h > > fi > > ;; > > > >+ avr-*-*) > >+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mlink-relax option" >&5 > >+$as_echo_n "checking assembler for -mlink-relax option... " >&6; } > >+if test "${gcc_cv_as_avr_relax+set}" = set; then : > >+ $as_echo_n "(cached) " >&6 > >+else > >+ gcc_cv_as_avr_relax=no > >+ if test x$gcc_cv_as != x; then > >+ $as_echo '.text' > conftest.s > >+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mlink-relax -o conftest.o conftest.s >&5' > >+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 > >+ (eval $ac_try) 2>&5 > >+ ac_status=$? > >+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 > >+ test $ac_status = 0; }; } > >+ then > >+ gcc_cv_as_avr_relax=yes > >+ else > >+ echo "configure: failed program was" >&5 > >+ cat conftest.s >&5 > >+ fi > >+ rm -f conftest.o conftest.s > >+ fi > >+fi > >+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_relax" >&5 > >+$as_echo "$gcc_cv_as_avr_relax" >&6; } > >+if test $gcc_cv_as_avr_relax = yes; then > >+ > >+$as_echo "#define HAVE_AS_RELAX_OPTION 1" >>confdefs.h > >+ > >+fi > >+ ;; > >+ > > cris-*-*) > > { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -no-mul-bug-abort option" >&5 > > $as_echo_n "checking assembler for -no-mul-bug-abort option... " >&6; } > >diff --git gcc/configure.ac gcc/configure.ac > >index d7cae6c..cfa862d 100644 > >--- gcc/configure.ac > >+++ gcc/configure.ac > >@@ -3579,6 +3579,13 @@ case "$target" in > > [Define if your assembler supports the lituse_jsrdirect relocation.])]) > > ;; > > > >+ avr-*-*) > >+ gcc_GAS_CHECK_FEATURE([-mlink-relax option], gcc_cv_as_avr_relax,, > >+ [-mlink-relax], [.text],, > >+ [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, > > IMO this is very confusing naming > > - The gas option is not "relax" but "link-relax" > - The option is avr specific, thus in order to avoid naming clashes > the variable(s) should be named something like > > HAVE_AS_AVR_LINK_RELAX_OPTION Ok, I'll resend the patch with the renamed define - I was following whatever the sparc target was doing. Regards Senthil
diff --git gcc/config/avr/avr.h gcc/config/avr/avr.h index 78434ec..b4e3eb1 100644 --- gcc/config/avr/avr.h +++ gcc/config/avr/avr.h @@ -512,7 +512,28 @@ extern const char *avr_device_to_sp8 (int argc, const char **argv); %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ %{!fexceptions:-fno-exceptions}" -#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*}) " +#ifdef HAVE_AS_RELAX_OPTION +#define ASM_RELAX_SPEC "%{mrelax:-mlink-relax}" +#else +#define ASM_RELAX_SPEC "" +#endif + +#define ASM_SPEC "%:device_to_as(%{mmcu=*:%*})\ +%(asm_relax)" + +/* This macro defines names of additional specifications to put in the specs + that can be used in various specifications like CC1_SPEC. Its definition + is an initializer with a subgrouping for each command option. + + Each subgrouping contains a string constant, that defines the + specification name, and a string constant that used by the GCC driver + program. + + Do not define this macro if it does not need to do anything. */ + +#define EXTRA_SPECS \ + { "asm_relax", ASM_RELAX_SPEC } + #define LINK_SPEC "\ %{mrelax:--relax\ diff --git gcc/configure gcc/configure index bfb1525..7815038 100755 --- gcc/configure +++ gcc/configure @@ -24142,6 +24142,39 @@ $as_echo "#define HAVE_AS_JSRDIRECT_RELOCS 1" >>confdefs.h fi ;; + avr-*-*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mlink-relax option" >&5 +$as_echo_n "checking assembler for -mlink-relax option... " >&6; } +if test "${gcc_cv_as_avr_relax+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + gcc_cv_as_avr_relax=no + if test x$gcc_cv_as != x; then + $as_echo '.text' > conftest.s + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mlink-relax -o conftest.o conftest.s >&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } + then + gcc_cv_as_avr_relax=yes + else + echo "configure: failed program was" >&5 + cat conftest.s >&5 + fi + rm -f conftest.o conftest.s + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_avr_relax" >&5 +$as_echo "$gcc_cv_as_avr_relax" >&6; } +if test $gcc_cv_as_avr_relax = yes; then + +$as_echo "#define HAVE_AS_RELAX_OPTION 1" >>confdefs.h + +fi + ;; + cris-*-*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -no-mul-bug-abort option" >&5 $as_echo_n "checking assembler for -no-mul-bug-abort option... " >&6; } diff --git gcc/configure.ac gcc/configure.ac index d7cae6c..cfa862d 100644 --- gcc/configure.ac +++ gcc/configure.ac @@ -3579,6 +3579,13 @@ case "$target" in [Define if your assembler supports the lituse_jsrdirect relocation.])]) ;; + avr-*-*) + gcc_GAS_CHECK_FEATURE([-mlink-relax option], gcc_cv_as_avr_relax,, + [-mlink-relax], [.text],, + [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, + [Define if your assembler supports -mlink-relax option.])]) + ;; + cris-*-*) gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], gcc_cv_as_cris_no_mul_bug,[2,15,91],