olaf-devel: fix for older systems and powerpc (#23913)

audio/olaf-devel/Portfile

@@ -8,7 +8,6 @@ name                olaf-devel
 version             20230929
 revision            0
 categories          audio
-platforms           darwin
 license             AGPL-3
 maintainers         {l2dy @l2dy} openmaintainer
 description         Overly Lightweight Acoustic Fingerprinting
@@ -20,6 +19,12 @@ checksums           rmd160  dc0dbfa5d0a113f43094892571016bd5bbc0962f \
 
 depends_run         port:rb32-threach
 
+# https://github.com/JorenSix/Olaf/issues/50
+patchfiles-append   patch-altivec.diff
+
+# cc1: error: unrecognized command line option "-std=gnu11"
+compiler.c_standard 2011
+
 use_configure       no
 build.target        compile
 

audio/olaf-devel/files/patch-altivec.diff

@@ -0,0 +1,11 @@
+--- src/pffft.c	2023-09-29 22:52:51.000000000 +0800
++++ src/pffft.c	2024-05-12 10:31:03.000000000 +0800
+@@ -96,7 +96,7 @@
+ /*
+    Altivec support macros 
+ */
+-#if !defined(PFFFT_SIMD_DISABLE) && (defined(__ppc__) || defined(__ppc64__))
++#if !defined(PFFFT_SIMD_DISABLE) && (defined(__ppc__) || defined(__ppc64__)) && !defined(__APPLE__)
+ typedef vector float v4sf;
+ #  define SIMD_SZ 4
+ #  define VZERO() ((vector float) vec_splat_u8(0))