Refactor config - @MK1MF_Builds out, general build scheme in

Time to get rid of @MK1MF_Builds and introduce a more flexible
'build_scheme' configuration key.  Its value may be a string or an
array of strings, meaning we need to teach resolve_config how to
handle ARRAY referenses.

The build scheme is a word that selects a function to create the
appropriate result files for a certain configuration.  Currently valid
build schemes aer "mk1mf" and "unixmake", the plan is however to add
at least one other for a more universal build scheme.

Incidently, this also adds the functions 'add' and 'add_before', which
can be used in a configuration, so instead of having to repeatedly
write a sub like this:

	key1 => sub { join(" ", @_, "myvalues"); },
	key2 => sub { join(" ", "myvalues", @_); },

one could write this:

	key1 => add(" ", "myvalues"),
	key2 => add_before(" ", "myvalues"),

The good point with 'add' and 'add_before' is that they handle
inheritances where the values are a misture of scalars and ARRAYs.  If
there are any ARRAY to be found, the resulting value will be an ARRAY,
otherwise it will be a scalar with all the incoming valued joined
together with the separator given as first argument to add/add_before.

Reviewed-by: Rich Salz <rsalz@openssl.org>

3 files changed, 30 insertions, 11 deletions

diff --git a/Configurations/00-base-templates.conf b/Configurations/00-base-templates.conf
index 064648f15a..90633c4abf 100644
--- a/Configurations/00-base-templates.conf
+++ b/Configurations/00-base-templates.conf
@@ -20,6 +20,7 @@
 	poly1305_obj	=> "",
 
 	unistd		=> "<unistd.h>",
+	build_scheme	=> "unixmake",
     },
 
     x86_asm => {
diff --git a/Configurations/10-main.conf b/Configurations/10-main.conf
index 06911acac1..c5ae5940e2 100644
--- a/Configurations/10-main.conf
+++ b/Configurations/10-main.conf
@@ -125,13 +125,13 @@
     },
     "solaris-sparcv8-gcc" => {
         inherit_from     => [ "solaris-sparcv7-gcc", asm("sparcv8_asm") ],
-        cflags           => sub { join(" ","-mcpu=v8",@_); },
+        cflags           => add_before(" ", "-mcpu=v8"),
     },
     "solaris-sparcv9-gcc" => {
         # -m32 should be safe to add as long as driver recognizes
         # -mcpu=ultrasparc
         inherit_from     => [ "solaris-sparcv7-gcc", asm("sparcv9_asm") ],
-        cflags           => sub { join(" ","-m32 -mcpu=ultrasparc",@_); },
+        cflags           => add_before(" ", "-m32 -mcpu=ultrasparc"),
         debug_cflags     => "-DBN_DEBUG -DREF_CHECK -DCONF_DEBUG -DBN_CTX_DEBUG -DPEDANTIC -O -g -pedantic -ansi -Wshadow -Wno-long-long -D__EXTENSIONS__",
     },
     "solaris64-sparcv9-gcc" => {
@@ -161,15 +161,15 @@
 ####
     "solaris-sparcv8-cc" => {
         inherit_from     => [ "solaris-sparcv7-cc", asm("sparcv8_asm") ],
-        cflags           => sub { join(" ","-xarch=v8",@_); },
+        cflags           => add_before(" ", "-xarch=v8"),
     },
     "solaris-sparcv9-cc" => {
         inherit_from     => [ "solaris-sparcv7-cc", asm("sparcv9_asm") ],
-        cflags           => sub { join(" ","-xarch=v8plus -xtarget=ultra",@_); },
+        cflags           => add_before(" ", "-xarch=v8plus -xtarget=ultra"),
     },
     "solaris64-sparcv9-cc" => {
         inherit_from     => [ "solaris-sparcv7-cc", asm("sparcv9_asm") ],
-        cflags           => sub { join(" ","-xarch=v9 -xtarget=ultra",@_); },
+        cflags           => add_before(" ", "-xarch=v9 -xtarget=ultra"),
         bn_ops           => "BN_LLONG RC4_CHAR RC4_CHUNK DES_INT DES_PTR DES_RISC1 DES_UNROLL BF_PTR",
         shared_ldflag    => "-xarch=v9 -G -dy -z text",
         multilib         => "/64",
@@ -353,7 +353,7 @@
     },
     "hpux-parisc1_1-cc" => {
         inherit_from     => [ "hpux-parisc-cc", asm("parisc11_asm") ],
-        cflags           => sub { join(" ","+DA1.1",@_); },
+        cflags           => add_before(" ", "+DA1.1"),
         multilib         => "/pa1.1",
     },
     "hpux64-parisc2-cc" => {
@@ -799,7 +799,7 @@
     },
     "android-armv7" => {
         inherit_from     => [ "android-armeabi" ],
-        cflags           => sub { join (" ","-march=armv7-a",@_); },
+        cflags           => add_before(" ", "-march=armv7-a"),
     },
     "android-mips" => {
         inherit_from     => [ "android", asm("mips32_asm") ],
@@ -1119,23 +1119,26 @@
         cc               => "cl",
         cflags           => "-W3 -wd4090 -Gs0 -GF -Gy -nologo -DOPENSSL_SYS_WIN32 -DWIN32_LEAN_AND_MEAN -DL_ENDIAN -D_CRT_SECURE_NO_DEPRECATE",
         dso_scheme       => "win32",
+	build_scheme     => "mk1mf",
     },
     "VC-WIN64I" => {
         inherit_from     => [ "VC-common", asm("ia64_asm") ],
-        cflags           => sub { join(" ",@_,"-DUNICODE -D_UNICODE"); },
+        cflags           => add(" ", "-DUNICODE -D_UNICODE"),
         sys_id           => "WIN64I",
         bn_ops           => "SIXTY_FOUR_BIT RC4_CHUNK_LL DES_INT EXPORT_VAR_AS_FN",
         bn_obj           => sub { my $r=join(" ",@_); $r=~s/bn\-//; $r; },
         rc4_obj          => "",
         perlasm_scheme   => "ias",
+	build_scheme     => [ "mk1mf", "VC-W64" ],
     },
     "VC-WIN64A" => {
         inherit_from     => [ "VC-common", asm("x86_64_asm") ],
-        cflags           => sub { join(" ",@_,"-DUNICODE -D_UNICODE"); },
+        cflags           => add(" ", "-DUNICODE -D_UNICODE"),
         sys_id           => "WIN64A",
         bn_ops           => "SIXTY_FOUR_BIT RC4_CHUNK_LL DES_INT EXPORT_VAR_AS_FN",
         bn_obj           => sub { my $r=join(" ",@_); $r=~s/x86_64\-gcc/bn_asm/; $r; },
         perlasm_scheme   => "auto",
+	build_scheme     => [ "mk1mf", "VC-W64" ],
     },
     "VC-WIN32" => {
         # x86 Win32 target defaults to ANSI API, if you want UNICODE,
@@ -1144,12 +1147,14 @@
         sys_id           => "WIN32",
         bn_ops           => "BN_LLONG RC4_INDEX EXPORT_VAR_AS_FN ${x86_gcc_opts}",
         perlasm_scheme   => "win32n",
+	build_scheme     => [ "mk1mf", "VC-W32" ],
     },
     "VC-CE" => {
         cc               => "cl",
         sys_id           => "WINCE",
         bn_ops           => "BN_LLONG RC4_INDEX EXPORT_VAR_AS_FN ${x86_gcc_opts}",
         dso_scheme       => "win32",
+	build_scheme     => [ "mk1mf", "VC-WCE" ],
     },
 
 #### Borland C++ 4.5
@@ -1158,6 +1163,7 @@
         sys_id           => "WIN32",
         bn_ops           => "BN_LLONG DES_PTR RC4_INDEX EXPORT_VAR_AS_FN",
         dso_scheme       => "win32",
+	build_scheme     => [ "mk1mf", "BC" ],
     },
 
 #### MinGW
@@ -1277,10 +1283,12 @@
     "netware-clib" => {
         cc               => "mwccnlm",
         bn_ops           => "${x86_gcc_opts}",
+	build_scheme     => [ "mk1mf", "netware" ],
     },
     "netware-clib-bsdsock" => {
         cc               => "mwccnlm",
         bn_ops           => "${x86_gcc_opts}",
+	build_scheme     => [ "mk1mf", "netware" ],
     },
     "netware-clib-gcc" => {
         cc               => "i586-netware-gcc",
@@ -1296,10 +1304,12 @@
     "netware-libc" => {
         cc               => "mwccnlm",
         bn_ops           => "BN_LLONG ${x86_gcc_opts}",
+	build_scheme     => [ "mk1mf", "netware" ],
     },
     "netware-libc-bsdsock" => {
         cc               => "mwccnlm",
         bn_ops           => "BN_LLONG ${x86_gcc_opts}",
+	build_scheme     => [ "mk1mf", "netware" ],
     },
     "netware-libc-gcc" => {
         cc               => "i586-netware-gcc",
diff --git a/Configurations/README b/Configurations/README
index e1327e57f9..df55d71549 100644
--- a/Configurations/README
+++ b/Configurations/README
@@ -97,8 +97,16 @@ In each table entry, the following keys are significant:
         shared_target   => The shared library building method used.
                            This is a target found in Makefile.shared.
         build_scheme    => The scheme used to build up a Makefile.
-                           (NOTE: this is here for future use, it's
-                           not implemented yet)
+                           In its simplest form, the value is a string
+                           with the name of the build scheme.
+                           The value may also take the form of a list
+                           of strings, if the build_scheme is to have
+                           some options.  In this case, the first
+                           string in the list is the name of the build
+                           scheme.
+                           Currently recognised build schemes are
+                           "mk1mf" and "unixmake".  Others may appear
+                           in the future.
 
         multilib        => On systems that support having multiple
                            implementations of a library (typically a