makefile: Add AUTO_INSTALL_PACKAGES build option

If running as root on most platforms or running on macOS with Home
Brew package manager, any missing packages for maximal simulator
functionality can be automatically installed during the build.

makefile

@@ -263,9 +263,11 @@ find_include = $(abspath $(strip $(firstword $(foreach dir,$(strip ${INCPATH}),$
 ifeq (Darwin,$(OSTYPE))
   ifeq (/usr/local/bin/brew,$(call find_exe,brew))
     PKG_MGR = HOMEBREW
+    PKG_CMD = brew install
   else
     ifeq (/opt/local/bin/port,$(call find_exe,port))
       PKG_MGR = MACPORTS
+      PKG_CMD = port install
     endif
   endif
 endif
@@ -275,21 +277,31 @@ ifneq (,$(and $(findstring Linux,$(OSTYPE)),$(call find_exe,apt-get)))
   else
     PKG_MGR = TERMUX
   endif
+  PKG_CMD = apt-get install
 endif
 ifneq (,$(and $(findstring Linux,$(OSTYPE)),$(call find_exe,yum)))
   PKG_MGR = YUM
+  PKG_CMD = yum install
 endif
 ifneq (,$(and $(findstring Linux,$(OSTYPE)),$(call find_exe,zypper)))
   PKG_MGR = ZYPPER
+  PKG_CMD = zypper install
 endif
 ifneq (,$(and $(findstring NetBSD,$(OSTYPE)),$(call find_exe,pkgin)))
   PKG_MGR = PKGSRC
+  PKG_CMD = pkgin install
+  PKG_NO_SUDO = YES
 endif
 ifneq (,$(and $(findstring FreeBSD,$(OSTYPE)),$(call find_exe,pkg)))
   PKG_MGR = PKGBSD
+  PKG_CMD = pkg install
+  PKG_NO_SUDO = YES
 endif
 ifneq (,$(and $(findstring OpenBSD,$(OSTYPE)),$(call find_exe,pkg_add)))
   PKG_MGR = PKGADD
+  PKG_CMD = pkg_add
+  PKG_NO_SUDO = YES
+  PKG_SHELL_READ_CANT_PROMPT = YES
 endif
 # Dependent packages
 DPKG_COMPILER  = 1
@@ -335,6 +347,14 @@ else
   PKGS_SRC_PKGADD     = -        -             -              -            -             -           -            -          -         -
 endif
 ifeq (${WIN32},)  #*nix Environments (&& cygwin)
+  # OSNAME is used in messages to indicate the source of libpcap components
+  OSNAME = $(OSTYPE)
+  ifeq (SunOS,$(OSTYPE))
+    export TEST = /bin/test
+  else
+    export TEST = test
+  endif
+  override AUTO_INSTALL_PACKAGES:=$(and $(AUTO_INSTALL_PACKAGES),$(or $(findstring HOMEBREW,$(PKG_MGR)),$(shell if $(TEST) -r /dev/mem; then echo running_as_root; fi)))
   ifeq (${GCC},)
     ifeq (,$(call find_exe,gcc))
       ifneq (clang,$(findstring clang,$(and $(call find_exe,cc),$(shell cc -v /dev/null 2>&1 | grep 'clang'))))
@@ -347,13 +367,6 @@ ifeq (${WIN32},)  #*nix Environments (&& cygwin)
       GCC = gcc
     endif
   endif
-  # OSNAME is used in messages to indicate the source of libpcap components
-  OSNAME = $(OSTYPE)
-  ifeq (SunOS,$(OSTYPE))
-    export TEST = /bin/test
-  else
-    export TEST = test
-  endif
   ifeq (CYGWIN,$(findstring CYGWIN,$(OSTYPE))) # uname returns CYGWIN_NT-n.n-ver
     OSTYPE = cygwin
     OSNAME = windows-build
@@ -1363,10 +1376,12 @@ ifneq (,$(USEFUL_PACKAGES))
   $(info *** Info ***     $(USEFUL_PACKAGES))
   $(info *** Info *** package$(USEFUL_PLURAL) $(USEFUL_MULTIPLE_HIST) available on your system.)
   $(info )
-  $(info *** You have the option of building $(MAKECMDGOALS_DESCRIPTION) without the)
+  ifeq (,$(AUTO_INSTALL_PACKAGES))
-  $(info *** functionality $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) provide$(if $(USEFUL_PLURAL),,s), or stopping now to install)
+    $(info *** You have the option of building $(MAKECMDGOALS_DESCRIPTION) without the)
-  $(info *** $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL).)
+    $(info *** functionality $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) provide$(if $(USEFUL_PLURAL),,s), or stopping now to install)
-  $(info )
+    $(info *** $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL).)
+    $(info )
+  endif
 endif
 ifneq (,$(BUILD_SEPARATE))
   EXTRAS:=BUILD_SEPARATE=$(BUILD_SEPARATE)
@@ -1374,15 +1389,15 @@ endif
 ifneq (,$(QUIET))
   EXTRAS+= QUIET=$(QUIET)
 endif
-ifneq (,$(and $(findstring HOMEBREW,$(PKG_MGR)),$(USEFUL_PACKAGES)))
+ifneq (,$(and $(AUTO_INSTALL_PACKAGES),$(PKG_CMD),$(USEFUL_PACKAGES)))
-  ifneq (,$(AUTO_RUN_BREW))
+  ifneq (,$(AUTO_INSTALL_PACKAGES))
-    $(info Running brew now to install $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) before building $(MAKECMDGOALS_DESCRIPTION)?)
+    $(info Running $(word 1,$(PKG_CMD)) now to install $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) before building $(MAKECMDGOALS_DESCRIPTION)?)
   else
     $(info Do you want to install $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) before building $(MAKECMDGOALS_DESCRIPTION)?)
   endif
-  ifeq (,$(if $(AUTO_RUN_BREW),,$(shell bash -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n)))
+  ifeq (,$(if $(AUTO_INSTALL_PACKAGES),,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n)))
-    BREW_RESULT = $(shell brew install $(USEFUL_PACKAGES) 1>&2)
+    INSTALLER_RESULT = $(shell $(PKG_CMD) $(USEFUL_PACKAGES) 1>&2)
-    $(info $(BREW_RESULT))
+    $(info $(INSTALLER_RESULT))
     $(info *** rerunning this make to perform your desired build...)
     MAKE_RESULT = $(shell $(MAKE) $(MAKECMDGOALS) $(EXTRAS) 1>&2)
     $(error Done: $(MAKE_RESULT))
@@ -1390,85 +1405,36 @@ ifneq (,$(and $(findstring HOMEBREW,$(PKG_MGR)),$(USEFUL_PACKAGES)))
 else
   ifneq (,$(USEFUL_PACKAGES))
     $(info Do you want to install $(USEFUL_MULTIPLE) package$(USEFUL_PLURAL) before building $(MAKECMDGOALS_DESCRIPTION)?)
-  endif
+    ifeq (,$(PKG_SHELL_READ_CANT_PROMPT))
-  ifneq (,$(and $(findstring MACPORTS,$(PKG_MGR)),$(USEFUL_PACKAGES)))
+      ANSWER := $(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n)
-    ifeq (,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n))
+    else
-      $(info Enter:    $$ sudo port install $(USEFUL_PACKAGES))
+      $(info [Enter Y or N, Default is Y])
-      $(info when that completes)
+      ANSWER := $(shell $(SHELL) -c 'read answer; echo $$answer' | grep -i n)
-      $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
+    endif
-      $(error )
+    ifeq (,$(ANSWER))
+      ANSWER := Y
+    else
+      ifeq (y,$(ANSWER))
+        ANSWER := Y
+      endif
+    endif
+    ifeq (Y,$(ANSWER))
+      ifeq (,$(PKG_NO_SUDO))
+        $(info Enter:    $$ sudo $(PKG_CMD) $(USEFUL_PACKAGES))
+        $(info when that completes)
+        $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
+        $(error )
+      else
+        hash := \#
+        $(info Enter:    $$ su)
+        $(info Enter:    Password: <type-root-password>)
+        $(info Enter:    $(hash) $(PKG_CMD) $(USEFUL_PACKAGES))
+        $(info when that completes)
+        $(info Enter:    $(hash) exit)
+        $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
+        $(error )
+      endif
     endif
-  endif
-endif
-ifneq (,$(and $(findstring APT,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ifeq (,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n))
-    $(info Enter:    $$ sudo apt-get install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring TERMUX,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ifeq (,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n))
-    $(info Enter:    $$ pkg install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring YUM,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ANSWER = $(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n)
-  ifneq (n,$(ANSWER))
-    $(info Enter:    $$ sudo yum install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring ZYPPER,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ANSWER = $(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n)
-  ifneq (n,$(ANSWER))
-    $(info Enter:    $$ sudo zypper install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring PKGSRC,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ifeq (,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n))
-    $(info Enter:    $$ su)
-    hash := \#
-    $(info Enter:    Password: <type-root-password>)
-    $(info Enter:    $(hash) pkgin install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info Enter:    $(hash) exit)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring PKGBSD,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  ifeq (,$(shell $(SHELL) -c 'read -p "[Enter Y or N, Default is Y] " answer; echo $$answer' | grep -i n))
-    $(info Enter:    $$ su)
-    hash := \#
-    $(info Enter:    Password: <type-root-password>)
-    $(info Enter:    $(hash) pkg install $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info Enter:    $(hash) exit)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
-  endif
-endif
-ifneq (,$(and $(findstring PKGADD,$(PKG_MGR)),$(USEFUL_PACKAGES)))
-  $(info [Enter Y or N, Default is Y])
-  ifeq (,$(shell $(SHELL) -c 'read answer; echo $$answer' | grep -i n))
-    $(info Enter:    $$ su)
-    hash := \#
-    $(info Enter:    Password: <type-root-password>)
-    $(info Enter:    $(hash) pkg_add $(USEFUL_PACKAGES))
-    $(info when that completes)
-    $(info Enter:    $(hash) exit)
-    $(info re-enter: $$ $(MAKE) $(MAKECMDGOALS) $(EXTRAS))
-    $(error )
   endif
 endif
 ifneq (,$(GIT_COMMIT_ID))