File otp_src_28.4-sys-zstd.patch of Package erlang

diff -Ndurp otp_src_28.4/erts/emulator/Makefile.in otp_src_28.4-sys-zstd/erts/emulator/Makefile.in
--- otp_src_28.4/erts/emulator/Makefile.in	2026-03-04 09:46:39.000000000 +0200
+++ otp_src_28.4-sys-zstd/erts/emulator/Makefile.in	2026-03-04 12:44:55.013643612 +0200
@@ -400,14 +400,8 @@ endif
 
 ZSTD_DIR = $(ERL_TOP)/erts/emulator/zstd/obj/$(TARGET)/$(TYPE)
 ZSTD_LIB = $(ZSTD_DIR)/$(LIB_PREFIX)zstd$(LIB_SUFFIX)
-DEPLIBS += $(ZSTD_LIB)
  
-ifeq ($(TARGET),win32)
-LIBS    += -L$(ZSTD_DIR) -lzstd
-else
-# Build on darwin fails if -l$(ZSTD_LIB) is used
-LIBS    += $(ZSTD_LIB)
-endif
+LIBS    += $(shell pkg-config --libs libzstd)
 
 LIBSCTP = @LIBSCTP@
 
@@ -452,8 +446,7 @@ CREATE_DIRS += $(OBJDIR) \
 	pcre/obj/$(TARGET)/$(TYPE) \
 	$(ZLIB_OBJDIR) \
 	$(RYU_OBJDIR) \
-	$(OPENSSL_OBJDIR) \
-        $(ZSTD_OBJDIR)
+	$(OPENSSL_OBJDIR)
 
 ifeq ($(FLAVOR),jit)
 CREATE_DIRS+=$(OBJDIR)/asmjit/ \
@@ -532,7 +525,6 @@ include zlib/zlib.mk
 include pcre/pcre.mk
 include ryu/ryu.mk
 include openssl/openssl.mk
-include zstd/zstd.mk
 
 $(ERTS_LIB):
 	$(V_at)cd $(ERTS_LIB_DIR) && $(MAKE) $(TYPE)
@@ -842,7 +834,7 @@ COMMON_INCLUDES = -Ibeam -Isys/$(ERLANG_
 ifndef Z_LIB
 COMMON_INCLUDES += -Izlib 
 endif
-COMMON_INCLUDES += -Ipcre -Iryu -Iopenssl/include -Izstd
+COMMON_INCLUDES += -Ipcre -Iryu -Iopenssl/include $(shell pkg-config --cflags-only-I libzstd)
 COMMON_INCLUDES += -I../include -I../include/$(TARGET)
 COMMON_INCLUDES += -I../include/internal -I../include/internal/$(TARGET)
 
@@ -1447,7 +1439,7 @@ $(TARGET)/gen_git_version.mk:
 # rebuild.
 	$(V_at)if utils/gen_git_version $@; then touch beam/erl_bif_info.c; fi
 
-DEPEND_DEPS=jit src drv nif sys target zlib ryu zstd
+DEPEND_DEPS=jit src drv nif sys target zlib ryu
 
 $(TTF_DIR)/src.depend.mk: $(TTF_DIR)/GENERATED $(PRELOAD_SRC)
 	$(gen_verbose)
diff -Ndurp otp_src_28.4/erts/emulator/nifs/common/zstd_nif.c otp_src_28.4-sys-zstd/erts/emulator/nifs/common/zstd_nif.c
--- otp_src_28.4/erts/emulator/nifs/common/zstd_nif.c	2026-03-04 09:46:39.000000000 +0200
+++ otp_src_28.4-sys-zstd/erts/emulator/nifs/common/zstd_nif.c	2026-03-04 12:44:55.013643612 +0200
@@ -29,8 +29,8 @@
 
 #include "erl_nif.h"
 #define ZSTD_STATIC_LINKING_ONLY
-#include "erl_zstd.h"
-#include "erl_zdict.h"
+#include <zstd.h>
+#include <zdict.h>
 
 static ErlNifResourceType *compress_type;
 static ErlNifResourceType *decompress_type;