Subject: [PATCH v2 2/2] utf8.c: Enable workaround for iconv under macOS 14/15

From: [email-masked]
Date: Sun, 11 Jan 2026 20:51:51 +0100

From: Torsten Bögershausen <[email-masked]>

The previous commit introduced a workaround in utf8.c to deal
with broken iconv implementations.

It is enabled when a MacOS version is used that has a buggy
iconv library and there is no external library provided
(and linked against) from neither MacPorts nor Homebrew nor Fink.
For Homebrew, MacPorts and Fink we check if libiconv exist.
Note that a fresh installation on Fink now defaults to /opt/sw,
so check the new path (only).

Signed-off-by: Torsten Bögershausen <[email-masked]>
---
 Makefile         | 16 ++++++++++++++++
 config.mak.uname |  1 +
 2 files changed, 17 insertions(+)

diff --git a/Makefile b/Makefile
index b7eba509c6..8aa489f3b6 100644
--- a/Makefile
+++ b/Makefile
@@ -1687,11 +1687,21 @@ ifeq ($(uname_S),Darwin)
 			BASIC_CFLAGS += -I/sw/include
 			BASIC_LDFLAGS += -L/sw/lib
                 endif
+                ifeq ($(shell test -d /opt/sw/lib && echo y),y)
+			BASIC_CFLAGS += -I/opt/sw/include
+			BASIC_LDFLAGS += -L/opt/sw/lib
+			ifeq ($(shell test -e /opt/sw/lib/libiconv.dylib && echo y),y)
+				HAS_GOOD_LIBICONV = Yes
+			endif
+                endif
         endif
         ifndef NO_DARWIN_PORTS
                 ifeq ($(shell test -d /opt/local/lib && echo y),y)
 			BASIC_CFLAGS += -I/opt/local/include
 			BASIC_LDFLAGS += -L/opt/local/lib
+			ifeq ($(shell test -e /opt/local/lib/libiconv.dylib && echo y),y)
+				HAS_GOOD_LIBICONV = Yes
+			endif
                 endif
         endif
         ifndef NO_APPLE_COMMON_CRYPTO
@@ -1714,6 +1724,7 @@ endif
 ifdef USE_HOMEBREW_LIBICONV
 ifeq ($(shell test -d $(HOMEBREW_PREFIX)/opt/libiconv && echo y),y)
 	ICONVDIR ?= $(HOMEBREW_PREFIX)/opt/libiconv
+	HAS_GOOD_LIBICONV = Yes
 endif
 endif
 endif
@@ -1859,6 +1870,11 @@ ifndef NO_ICONV
                 endif
 		EXTLIBS += $(ICONV_LINK) -liconv
         endif
+        ifdef NEEDS_GOOD_LIBICONV
+        ifndef HAS_GOOD_LIBICONV
+                BASIC_CFLAGS += -DICONV_RESTART_RESET
+        endif
+        endif
 endif
 ifdef ICONV_OMITS_BOM
 	BASIC_CFLAGS += -DICONV_OMITS_BOM
diff --git a/config.mak.uname b/config.mak.uname
index 38b35af366..3c35ae33a3 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -157,6 +157,7 @@ ifeq ($(uname_S),Darwin)
         endif
         ifeq ($(shell test "$(DARWIN_MAJOR_VERSION)" -ge 24 && echo 1),1)
 		USE_HOMEBREW_LIBICONV = UnfortunatelyYes
+		NEEDS_GOOD_LIBICONV = UnfortunatelyYes
         endif
 
 	# The builtin FSMonitor on MacOS builds upon Simple-IPC.  Both require
-- 
2.50.0.rc0.46.g7014b55638.dirty