Default to building for the current macOS version, fix 3rdp

Now if you don't specify MIN_MAC_OSX_VERSION, it will use the
"current" version of macOS as the target.  "Current" is defined as
X.0 where the major version (X) is greater than 10 and X.Y when
major version is 10.

This allows building for a specific target, but uses the newest
libraries if you don't specify.

3rdp/build/GNUmakefile

@@ -34,7 +34,7 @@ ifneq ($(os),linux)
  endif
 endif
 ifeq ($(os),darwin)
- JS_CONFIGURE_ARGS += '--enable-macos-target=12.0'
+ JS_CONFIGURE_ARGS += '--enable-macos-target=${MIN_MAC_OSX_VERSION}'
 endif
 # Blacklist some machines...
 
@@ -167,6 +167,7 @@ $(CRYPTLIB_BUILD): $(3RDP_ROOT)/dist/cryptlib.zip $(3RDP_ROOT)/build/cl-fix-test
 	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-channel-select-both.patch
 	$(QUIET)patch -b -p0 -d $(CRYPT_SRC) < cl-allow-none-auth-svr.patch
 	$(QUIET)perl -pi.bak -e 's/^(#define CRYPTLIB_VERSION.*)$$/"$$1\n#define CRYPTLIB_PATCHES \"" . (chomp($$val = `cat cl-*.patch | if (which md5sum > \/dev\/null 2>&1); then md5sum; else md5; fi`), $$val) . "\""/e' $(CRYPT_SRC)/cryptlib.h
+	$(QUIET)sed -E -I orig 's/%%MIN_MAC_OSX_VERSION%%/${MIN_MAC_OSX_VERSION}/g' $(CRYPT_SRC)/tools/ccopts.sh
 ifeq ($(os),win32)
 	$(QUIET)cd $(CRYPT_SRC) && env - PATH="$(PATH)" CC="$(CC)" AR="$(AR)" RANLIB="$(RANLIB)" make directories
 	$(QUIET)cd $(CRYPT_SRC) && env - PATH="$(PATH)" CC="$(CC)" AR="$(AR)" RANLIB="$(RANLIB)" make toolscripts

3rdp/build/cl-macosx-minver.patch

@@ -5,7 +5,7 @@
  	case $OSNAME in
  		'Darwin')
 -			CCARGS="$CCARGS -fPIC -fno-common" ;;
-+			CCARGS="$CCARGS -fPIC -fno-common -mmacosx-version-min=12.0" ;;
++			CCARGS="$CCARGS -fPIC -fno-common -mmacosx-version-min=%%MIN_MAC_OSX_VERSION%%" ;;
  
  		'CYGWIN_NT-5.0'|'CYGWIN_NT-5.1'|'CYGWIN_NT-6.1')
  			;;

src/build/Common.gmake

@@ -369,7 +369,13 @@ ifeq ($(os),haiku)
  CFLAGS	+=	-D__unix__ -DNEEDS_FORKPTY
 endif
 ifeq ($(os),darwin)
- MIN_MAC_OSX_VERSION ?= 12.0
+ MAC_MAJOR_VER = $(shell sw_vers --productVersion | cut -f 1 -d.)
+ MAC_MINOR_VER = $(shell sw_vers --productVersion | cut -f 2 -d.)
+ ifeq ($(MAC_MAJOR_VER),10)
+  MIN_MAC_OSX_VERSION ?= $(MAC_MAJOR_VER).$(MAC_MINOR_VER)
+ else
+  MIN_MAC_OSX_VERSION ?= $(MAC_MAJOR_VER).0
+ endif
  CFLAGS +=  -D__unix__ -fno-common -D__DARWIN__
  CFLAGS +=  -mmacosx-version-min=$(MIN_MAC_OSX_VERSION)
  LDFLAGS += -mmacosx-version-min=$(MIN_MAC_OSX_VERSION)