From 77f0b35782edcfad2c73cc75784b926c1e8b9a74 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Fri, 2 Sep 2022 21:22:18 +0300
Subject: Add odb and cli conditional build-time dependencies

---
 mod/buildfile | 79 ++++++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 57 insertions(+), 22 deletions(-)

(limited to 'mod/buildfile')

diff --git a/mod/buildfile b/mod/buildfile
index 58a3caf..b5865cd 100644
--- a/mod/buildfile
+++ b/mod/buildfile
@@ -31,38 +31,73 @@ mod{brep}: {hxx ixx txx cxx}{* -module-options -{$libu_src}}               \
            libus{mod} ../libbrep/lib{brep} ../web/server/libus{web-server} \
            $libs
 
-{libue libus}{mod}: {hxx ixx     cxx}{module-options} \
-                    {hxx ixx txx cxx}{+{$libu_src}  } \
-                    $libs
+{libue libus}{mod}: {hxx ixx txx cxx}{+{$libu_src}} $libs
 
 libus{mod}: ../web/xhtml/libus{xhtml}
 libue{mod}: ../web/xhtml/libue{xhtml}
 
-# Generated options parser.
+## Consumption build ($develop == false).
+#
+
+# Use pregenerated versions in the consumption build.
+#
+{libue libus}{mod}: pregenerated/{hxx ixx cxx}{**}: include = (!$develop)
+
+if! $develop
+  cxx.poptions =+ "-I($src_base/pregenerated)"
+
+# Distribute pregenerated versions only in the consumption build.
+#
+pregenerated/{hxx ixx cxx}{*}: dist = (!$develop)
+
+#
+##
+
+## Development build ($develop == true).
 #
-if $cli.configured
-{
-  cli.cxx{module-options}: cli{module}
 
+{libue libus}{mod}: {hxx ixx cxx}{module-options}: include = $develop
+
+if $develop
+  import! [metadata] cli = cli%exe{cli}
+
+# In the development build distribute regenerated
+# {hxx ixx cxx}{module-options}, remapping their locations to the paths of the
+# pregenerated versions (which are only distributed in the consumption build;
+# see above). This way we make sure that the distributed files are always
+# up-to-date.
+#
+<{hxx ixx cxx}{module-options}>: cli{module} $cli
+{
   # Set option prefix to the empty value to handle all unknown request
   # parameters uniformly with a single catch block.
   #
-  cli.options += --std c++11 -I $src_root --include-with-brackets    \
---include-prefix mod --guard-prefix MOD --generate-specifier         \
---cxx-prologue "#include <mod/types-parsers.hxx>"                    \
---cli-namespace brep::cli --generate-file-scanner --option-length 46 \
---generate-modifier --generate-description --option-prefix ""
-
-  # Include the generated cli files into the distribution and don't remove
-  # them when cleaning in src (so that clean results in a state identical to
-  # distributed).
-  #
-  cli.cxx{*}:
-  {
-    dist  = true
-    clean = ($src_root != $out_root)
-  }
+  options = --std c++11 -I $src_root --include-with-brackets              \
+            --include-prefix mod --guard-prefix MOD --generate-specifier  \
+            --cxx-prologue "#include <mod/types-parsers.hxx>"             \
+            --cli-namespace brep::cli --generate-file-scanner             \
+            --option-length 46 --generate-modifier --generate-description \
+            --option-prefix "" --output-suffix "-options"
 }
+%
+if $develop
+{{
+  diag cli ($<[0])
+  ($<[1]) $options -o $out_base/ $path($<[0])
+
+  if diff $src_base/pregenerated/mod/module-options.hxx $path($>[0]) >- && \
+     diff $src_base/pregenerated/mod/module-options.ixx $path($>[1]) >- && \
+     diff $src_base/pregenerated/mod/module-options.cxx $path($>[2]) >-
+    exit
+  end
+
+  cp $path($>[0]) $src_base/pregenerated/mod/module-options.hxx
+  cp $path($>[1]) $src_base/pregenerated/mod/module-options.ixx
+  cp $path($>[2]) $src_base/pregenerated/mod/module-options.cxx
+}}
+
+#
+##
 
 # Don't install any of the module's headers.
 #
-- 
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