gcc-5: Fix hang with mmusl option on cmdline

When using -m32 -mmusl options in this order, gcc hangs
in parsing the options decode_cmdline_options_to_array()
the reason is that we have broken the link when adding
mmusl options, the order of specifying libc was not kept
in order as a result it was unable to contruct the array
correctly and ended in parse hang.

We fix the options to specify the order properly.

(From OE-Core rev: b6f1b26db8a1da2aae9557eeb8aae5beb7af1a06)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-5.3/0044-Adding-mmusl-as-a-musl-libc-specifier-and-the-necess.patch

@@ -15,10 +15,10 @@ Signed-off-by: Khem Raj <raj.khem@gmail.com>
  gcc/ginclude/stddef.h         |   3 ++
  6 files changed, 110 insertions(+), 13 deletions(-)
 
-diff --git a/gcc/config.gcc b/gcc/config.gcc
-index 3825bd5..39ce047 100644
---- a/gcc/config.gcc
-+++ b/gcc/config.gcc
+Index: gcc-5.4.0/gcc/config.gcc
+===================================================================
+--- gcc-5.4.0.orig/gcc/config.gcc
++++ gcc-5.4.0/gcc/config.gcc
 @@ -575,7 +575,7 @@ case ${target} in
  esac
  
@@ -50,11 +50,11 @@ index 3825bd5..39ce047 100644
  	if test x${enable_secureplt} = xyes; then
  		tm_file="rs6000/secureplt.h ${tm_file}"
  	fi
-diff --git a/gcc/config/linux.h b/gcc/config/linux.h
-index 22b9be5..ca9a17f 100644
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+Index: gcc-5.4.0/gcc/config/linux.h
+===================================================================
+--- gcc-5.4.0.orig/gcc/config/linux.h
++++ gcc-5.4.0/gcc/config/linux.h
+@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
  #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
  #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
  #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
@@ -67,7 +67,7 @@ index 22b9be5..ca9a17f 100644
  #endif
  
  #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
-@@ -53,18 +55,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+@@ -53,18 +55,21 @@ see the files COPYING3 and COPYING.RUNTI
     uClibc or Bionic is the default C library and whether
     -muclibc or -mglibc or -mbionic has been passed to change the default.  */
  
@@ -97,7 +97,7 @@ index 22b9be5..ca9a17f 100644
  #else
  #error "Unsupported DEFAULT_LIBC"
  #endif /* DEFAULT_LIBC */
-@@ -84,16 +89,16 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+@@ -84,16 +89,16 @@ see the files COPYING3 and COPYING.RUNTI
  
  #define GNU_USER_DYNAMIC_LINKER						\
    CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
@@ -118,7 +118,7 @@ index 22b9be5..ca9a17f 100644
  
  /* Whether we have Bionic libc runtime */
  #undef TARGET_HAS_BIONIC
-@@ -123,3 +128,74 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+@@ -123,3 +128,74 @@ see the files COPYING3 and COPYING.RUNTI
  # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function
  
  #endif
@@ -193,32 +193,35 @@ index 22b9be5..ca9a17f 100644
 +    { 0, 0, 0, 0, 0, 0 }				\
 +  }
 +#endif
-diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
-index c054338..9334f74 100644
---- a/gcc/config/linux.opt
-+++ b/gcc/config/linux.opt
-@@ -30,3 +30,7 @@ Use GNU C library
+Index: gcc-5.4.0/gcc/config/linux.opt
+===================================================================
+--- gcc-5.4.0.orig/gcc/config/linux.opt
++++ gcc-5.4.0/gcc/config/linux.opt
+@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l
+ Use GNU C library
+ 
  muclibc
- Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+-Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
++Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
  Use uClibc C library
 +
 +mmusl
-+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
 +Use musl C library
-diff --git a/gcc/config/rs6000/secureplt.h b/gcc/config/rs6000/secureplt.h
-index b463463..77edf2a 100644
---- a/gcc/config/rs6000/secureplt.h
-+++ b/gcc/config/rs6000/secureplt.h
-@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.  If not see
+Index: gcc-5.4.0/gcc/config/rs6000/secureplt.h
+===================================================================
+--- gcc-5.4.0.orig/gcc/config/rs6000/secureplt.h
++++ gcc-5.4.0/gcc/config/rs6000/secureplt.h
+@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.
  <http://www.gnu.org/licenses/>.  */
  
  #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
 +#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
-diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
-index c6c31dc..7cd07e0 100644
---- a/gcc/config/rs6000/sysv4.h
-+++ b/gcc/config/rs6000/sysv4.h
-@@ -538,6 +538,10 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
+Index: gcc-5.4.0/gcc/config/rs6000/sysv4.h
+===================================================================
+--- gcc-5.4.0.orig/gcc/config/rs6000/sysv4.h
++++ gcc-5.4.0/gcc/config/rs6000/sysv4.h
+@@ -538,6 +538,10 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
  #define CC1_SECURE_PLT_DEFAULT_SPEC ""
  #endif
  
@@ -237,10 +240,10 @@ index c6c31dc..7cd07e0 100644
    { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
    { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
    { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
-diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
-index f20a41b..eb879ef 100644
---- a/gcc/ginclude/stddef.h
-+++ b/gcc/ginclude/stddef.h
+Index: gcc-5.4.0/gcc/ginclude/stddef.h
+===================================================================
+--- gcc-5.4.0.orig/gcc/ginclude/stddef.h
++++ gcc-5.4.0/gcc/ginclude/stddef.h
 @@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
  #ifndef _GCC_SIZE_T
  #ifndef _SIZET_
@@ -265,6 +268,3 @@ index f20a41b..eb879ef 100644
  #endif /* __size_t */
  #endif /* _SIZET_ */
  #endif /* _GCC_SIZE_T */
--- 
-2.6.3
-