devel/lightning: Fix build on armv6/armv7

Fix the problem that made the build fail with LLVM.  However,
compiling with LLVM still leads to test suite failures on ARM
so we compile with gcc instead.  The patch for LLVM is left
in for if a future version of the library fixes the problem.

PR:		268079
Reported by:	fuz@fuz.su
MFH:		2022Q4

devel/lightning/Makefile

@@ -11,8 +11,6 @@ LICENSE=	LGPL3+
 LICENSE_FILE=	${WRKSRC}/COPYING.LESSER
 
 ONLY_FOR_ARCHS=	aarch64 amd64 arm armv6 armv7 i386 mips powerpc powerpc64 powerpc64le powerpcspe sparc64
-BROKEN_armv6=	fails to link: ../lib/.libs/liblightning.so: undefined reference to `__addsf3'
-BROKEN_armv7=	fails to link: ../lib/.libs/liblightning.so: undefined reference to `__addsf3'
 
 USES=		cpe libtool pathfix
 CPE_VENDOR=	gnu
@@ -22,7 +20,7 @@ INSTALL_TARGET=	install-strip
 TEST_TARGET=	check
 USE_LDCONFIG=	yes
 
-PLIST_SUB=	JIT_ARCH=${ARCH:S/i386/x86/:S/amd64/x86/:S/x86_64/x86/:S/sparc64/sparc/:C/powerpc.*/ppc/}
+PLIST_SUB=	JIT_ARCH=${ARCH:S/i386/x86/:S/amd64/x86/:S/x86_64/x86/:S/sparc64/sparc/:C/powerpc.C/ppc/:C/armv./arm/}
 
 INFO=		lightning
 
@@ -32,4 +30,14 @@ ASSERTIONS_DESC=Enable runtime code generation assertions
 ASSERTIONS_CONFIGURE_ON=--enable-assertions=yes
 ASSERTIONS_CONFIGURE_OFF=--enable-assertions=no
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${ARCH:Marmv?}
+USE_GCC=	yes
+.endif
+
+pre-configure:
+	@${REINPLACE_CMD} -e \
+		's|%%CC%%|${CC:T}|' ${WRKSRC}/check/lightning.c
+
+.include <bsd.port.post.mk>

devel/lightning/files/patch-check_lightning.c

@@ -0,0 +1,11 @@
+--- check/lightning.c.orig	2022-11-08 16:00:32 UTC
++++ check/lightning.c
+@@ -4333,7 +4333,7 @@ main(int argc, char *argv[])
+ #else
+ #  define cc "gcc"
+ #endif
+-    opt_short = snprintf(cmdline, sizeof(cmdline), cc " -E -x c %s", argv[opt_index]);
++    opt_short = snprintf(cmdline, sizeof(cmdline), "%%CC%% -E -x c %s", argv[opt_index]);
+     opt_short += snprintf(cmdline + opt_short,
+ 			  sizeof(cmdline) - opt_short,
+ 			  " -D__WORDSIZE=%d", __WORDSIZE);

devel/lightning/files/patch-lib_jit__arm-swf.c

@@ -0,0 +1,20 @@
+--- lib/jit_arm-swf.c.orig	2022-11-30 10:43:45 UTC
++++ lib/jit_arm-swf.c
+@@ -402,7 +402,7 @@ static void _swf_vaarg_d(jit_state_t*, jit_int32_t, ji
+ 	    BICI(rt, rn, encode_arm_immediate(im));			\
+     } while (0)
+
+-#if !defined(__GNUC__)
++#if !defined(__GNUC__) || defined(__llvm__)
+ float __addsf3(float u, float v)
+ {
+     return (u + v);
+@@ -414,6 +414,8 @@ __adddf3(double u, double v)
+     return (u + v);
+ }
+
++#endif
++#if !defined(__GNUC__)
+ float
+ __aeabi_fsub(float u, float v)
+ {