fix: darwin to linux toolchain.

configure/os/CONFIG.darwin-x86.linux-x86_64

@@ -0,0 +1,31 @@
+# CONFIG.darwin-x86.Common
+#
+# Definitions for darwin-x86 host - linux-x86_64 target builds
+# Sites may override these definitions in CONFIG_SITE.darwin-x86.Common
+#-------------------------------------------------------
+
+#Include definitions common to unix hosts
+#include $(CONFIG)/os/CONFIG.UnixCommon.Common
+include $(CONFIG)/os/CONFIG.Common.linux-x86_64
+#unexport GCC_EXEC_PREFIX
+
+GNU_DIR ?= /usr/local/opt/x86_64-unknown-linux-gnu/toolchain
+GNU_TARGET ?= x86_64-linux-gnu
+
+COMMANDLINE_LIBRARY ?= READLINE
+
+ARCH_DEP_COMMONFLAGS += -mtune=generic
+
+ARCH_DEP_CFLAGS   += $(ARCH_DEP_COMMONFLAGS)
+ARCH_DEP_CFLAGS   += -pipe -feliminate-unused-debug-types
+
+ARCH_DEP_CPPFLAGS += $(ARCH_DEP_COMMONFLAGS)
+
+ARCH_DEP_CXXFLAGS += $(ARCH_DEP_COMMONFLAGS)
+ARCH_DEP_CXXFLAGS += -pipe -feliminate-unused-debug-types
+ARCH_DEP_CXXFLAGS += -std=c++17
+
+ARCH_DEP_LDFLAGS += -Wl,-O1
+ARCH_DEP_LDFLAGS += -Wl,--hash-style=gnu
+ARCH_DEP_LDFLAGS += -Wl,--as-needed
+# ARCH_DEP_LDFLAGS += -Wl,--verbose

configure/os/CONFIG_SITE.darwin-x86.linux-x86_64

@@ -0,0 +1,19 @@
+# CONFIG_SITE.darwin-x86.linux-x86_64
+#
+# Site specific definitions for darwin-x86 host - linux-x86_64 target builds
+#-------------------------------------------------------
+
+# Default
+#GNU_DIR := /usr/local/opt/x86_64-unknown-linux-gnu/toolchain
+# Development
+GNU_DIR = /Users/jerzy/opt/toolchain/x86_64-unknown-linux-gnu/toolchain
+
+# Default
+#GNU_TARGET = x86_64-linux-gnu
+
+# Development
+#CMPLR_SUFFIX := -14
+
+# Expand ARCH DEPENDENT flags for your target
+#ARCH_DEP_COMMONFLAGS += -mtune=corei7
+#ARCH_DEP_LDFLAGS += -Wl,--verbose