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| author | Prashanth Mundkur <prashanth.mundkur@gmail.com> | 2016-07-16 16:39:50 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@eecs.berkeley.edu> | 2016-07-16 16:39:50 -0700 |
| commit | dc939be3b31a8d78690583ecccad286b8a2a8f76 (patch) | |
| tree | 1730a7900c56cffca133392f7341ad86cf0d28f1 /configure.ac | |
| parent | 748eee73a12b9263bf80a9ca9e8a40ce57a8da6d (diff) | |
| download | pk-dc939be3b31a8d78690583ecccad286b8a2a8f76.zip pk-dc939be3b31a8d78690583ecccad286b8a2a8f76.tar.gz pk-dc939be3b31a8d78690583ecccad286b8a2a8f76.tar.bz2 | |
Support 32bit build (#27)
* Support configuration for a 32-bit build.
* Regenerate configure.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index a5b0624..1bf0326 100644 --- a/configure.ac +++ b/configure.ac @@ -67,11 +67,40 @@ MCPPBS_PROG_INSTALL AC_HEADER_STDC #------------------------------------------------------------------------- -# Default compiler flags +# Register RISCV environment variable #------------------------------------------------------------------------- -AC_SUBST([CFLAGS], ["-Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks"]) -AC_SUBST([LIBS], ["-lgcc"]) +AC_ARG_VAR(RISCV, [top-level RISC-V install directory]) + +#------------------------------------------------------------------------- +# Set compiler flags +#------------------------------------------------------------------------- + +default_CFLAGS="-Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks" + +AC_ARG_ENABLE([32bit], + AS_HELP_STRING([--enable-32bit], [Build a 32-bit pk]), + BUILD_32BIT=$enableval, + BUILD_32BIT=no) + +case "${BUILD_32BIT}" in + yes|default) + echo "Building 32-bit pk" + CFLAGS="$default_CFLAGS -m32" + LDFLAGS="-m32" + install_subdir="riscv32-unknown-elf" + ;; + *) + CFLAGS="$default_CFLAGS" + LDFLAGS= + install_subdir="riscv64-unknown-elf" + ;; +esac + +AC_SUBST(CFLAGS) +AC_SUBST(LDFLAGS) +AC_SUBST([LIBS], ["-lgcc"]) +AC_SUBST(install_subdir) #------------------------------------------------------------------------- # MCPPBS subproject list |