diff options
Diffstat (limited to 'REORG.TODO/sysdeps/arm/preconfigure.ac')
| -rw-r--r-- | REORG.TODO/sysdeps/arm/preconfigure.ac | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/arm/preconfigure.ac b/REORG.TODO/sysdeps/arm/preconfigure.ac new file mode 100644 index 0000000000..20de5bcfea --- /dev/null +++ b/REORG.TODO/sysdeps/arm/preconfigure.ac @@ -0,0 +1,50 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local preconfigure fragment for sysdeps/arm + +case "$machine" in +arm*) + # If the compiler enables unwind tables by default, this causes + # problems with undefined symbols in -nostdlib link tests. To + # avoid this, add -fno-unwind-tables here and remove it in + # sysdeps/arm/configure.ac after those tests have been run. + if test "${CFLAGS+set}" != "set"; then + CFLAGS="-g -O2" + fi + CFLAGS="$CFLAGS -fno-unwind-tables" + + base_machine=arm + # Lets ask the compiler which ARM family we've got + # Unfortunately it doesn't define any flags for implementations + # that you might pass to -mcpu or -mtune + # Note if you add patterns here you must ensure that + # an appropriate directory exists in sysdeps/arm + archcppflag=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | + sed -n 's/^#define \(__ARM_ARCH_[0-9].*__\) .*$/\1/p'` + + case "x$archcppflag" in + x__ARM_ARCH_[89]*__) + machine=armv7 + AC_MSG_NOTICE([Found compiler is configured for something newer than v7 - using v7]) + ;; + + x__ARM_ARCH_7A__) + machine=armv7 + AC_MSG_NOTICE([Found compiler is configured for $machine]) + ;; + + x__ARM_ARCH_6T2__) + machine=armv6t2 + AC_MSG_NOTICE([Found compiler is configured for $machine]) + ;; + x__ARM_ARCH_6*__) + machine=armv6 + AC_MSG_NOTICE([Found compiler is configured for $machine]) + ;; + *) + machine=arm + AC_MSG_WARN([arm/preconfigure: Did not find ARM architecture type; using default]) + ;; + esac + + machine=arm/$machine +esac |