fix libFLAC to build PPC asm properly, conditionalized for gas or as

configure.in

@@ -169,12 +169,26 @@ if test -n "$DOCBOOK_TO_MAN" ; then
 AC_DEFINE(FLAC__HAS_DOCBOOK_TO_MAN)
 fi
 
+# only matters for x86
 AC_CHECK_PROGS(NASM, nasm)
 AM_CONDITIONAL(FLaC__HAS_NASM, test -n "$NASM")
 if test -n "$NASM" ; then
 AC_DEFINE(FLAC__HAS_NASM)
 fi
 
+# only matters for PowerPC
+AC_CHECK_PROGS(AS, as)
+AC_CHECK_PROGS(GAS, gas)
+AM_CONDITIONAL(FLaC__HAS_AS, test -n "$AS")
+AM_CONDITIONAL(FLaC__HAS_GAS, test -n "$GAS")
+if test -n "$AS" ; then
+AC_DEFINE(FLAC__HAS_AS)
+fi
+if test -n "$GAS" ; then
+# funniest. macro. ever.
+AC_DEFINE(FLAC__HAS_GAS)
+fi
+
 OUR_CFLAGS_HEAD='-I$(top_builddir) -I$(srcdir)/include -I$(top_srcdir)/include'
 if test x$debug = xtrue; then
 	OUR_CFLAGS_HEAD="$OUR_CFLAGS_HEAD -g -O0 -DDEBUG"
@@ -196,7 +210,9 @@ AH_TEMPLATE(FLAC__EXHAUSTIVE_TESTS,  [define to run even more tests])
 AH_TEMPLATE(FLAC__VALGRIND_TESTING,  [define to enable use of Valgrind in testers])
 AH_TEMPLATE(FLAC__HAS_DOXYGEN,  [define if you have Doxygen])
 AH_TEMPLATE(FLAC__HAS_DOCBOOK_TO_MAN,  [define if you have docbook-to-man or docbook2man])
-AH_TEMPLATE(FLAC__HAS_NASM,  [define if you have the NASM assembler])
+AH_TEMPLATE(FLAC__HAS_NASM,  [define if you are compiling for x86 and have the NASM assembler])
+AH_TEMPLATE(FLAC__HAS_AS,  [define if you are compiling for PowerPC and have the 'as' assembler])
+AH_TEMPLATE(FLAC__HAS_GAS,  [define if you are compiling for PowerPC and have the 'gas' assembler])
 AH_TEMPLATE(FLAC__HAS_OGG,  [define if you have the ogg library])
 AH_TEMPLATE(FLAC__NO_ASM,  [define to disable use of assembly code])
 AH_TEMPLATE(FLAC__SSE_OS,  [define if your operating system supports SSE instructions])
@@ -209,6 +225,8 @@ AC_OUTPUT( \
 	src/libFLAC/Makefile \
 	src/libFLAC/ia32/Makefile \
 	src/libFLAC/ppc/Makefile \
+	src/libFLAC/ppc/as/Makefile \
+	src/libFLAC/ppc/gas/Makefile \
 	src/libFLAC/include/Makefile \
 	src/libFLAC/include/private/Makefile \
 	src/libFLAC/include/protected/Makefile \

src/libFLAC/Makefile.am

@@ -44,8 +44,13 @@ endif
 endif
 if FLaC__CPU_PPC
 ARCH_SUBDIRS = ppc
-#@@@@@@ need to conditionalize this to gas or as depending on configure
+if FLaC__HAS_AS
 libFLAC_la_LIBADD = ppc/as/libFLAC-asm.la
+else
+if FLaC__HAS_GAS
+libFLAC_la_LIBADD = ppc/gas/libFLAC-asm.la
+endif
+endif
 LOCAL_EXTRA_LDFLAGS = "-Wl,-read_only_relocs,warning"
 endif
 endif

src/libFLAC/ppc/Makefile.am

@@ -28,6 +28,4 @@
 #  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 #  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#@@@@@@ We actually want to only compile one based on some configuration,
-#@@@@@@ so we'll eventually have to conditionalize the sub-Makefile.am's
 SUBDIRS = as gas

src/libFLAC/ppc/as/Makefile.am

@@ -28,6 +28,8 @@
 #  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 #  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+if FLaC__HAS_AS
+
 SUFFIXES = .s .lo
 
 STRIP_NON_ASM = sh $(top_srcdir)/strip_non_asm_libtool_args.sh
@@ -40,3 +42,10 @@ STRIP_NON_ASM = sh $(top_srcdir)/strip_non_asm_libtool_args.sh
 noinst_LTLIBRARIES = libFLAC-asm.la
 libFLAC_asm_la_SOURCES = \
 	lpc_asm.s
+
+else
+
+EXTRA_DIST = \
+	lpc_asm.s
+
+endif

src/libFLAC/ppc/gas/Makefile.am

@@ -28,6 +28,8 @@
 #  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 #  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+if FLaC__HAS_GAS
+
 SUFFIXES = .s .lo
 
 STRIP_NON_ASM = sh $(top_srcdir)/strip_non_asm_libtool_args.sh
@@ -40,3 +42,10 @@ STRIP_NON_ASM = sh $(top_srcdir)/strip_non_asm_libtool_args.sh
 noinst_LTLIBRARIES = libFLAC-asm.la
 libFLAC_asm_la_SOURCES = \
 	lpc_asm.s
+
+else
+
+EXTRA_DIST = \
+	lpc_asm.s
+
+endif