backend/ninja: add generated sources to depscan order deps

Since we changed to using a json file to avoid over long command lines
we created a situation where the generated files may not be ready when
the depscan happens. To avoid that, we need to add all of the generated
sources as order deps.

Fixes: #9258

2 files changed, 15 insertions, 3 deletions

diff --git a/test cases/fortran/7 generated/meson.build b/test cases/fortran/7 generated/meson.build
index d1f483d..f021309 100644
--- a/test cases/fortran/7 generated/meson.build
+++ b/test cases/fortran/7 generated/meson.build
@@ -7,9 +7,21 @@ project('generated', 'fortran',
 conf_data = configuration_data()
 conf_data.set('ONE', 1)
 conf_data.set('TWO', 2)
-conf_data.set('THREE', 3)
 
-mod3_f = configure_file(input : 'mod3.fpp', output : 'mod3.f90', configuration : conf_data)
+mod3_f = custom_target(
+  'mod3.f',
+  input : 'mod3.f90',
+  output : 'mod3.f90',
+  # We need a platform agnostic way to do a copy a file, using a custom_target
+  # and we need to use the @OUTDIR@, not @OUTPUT@ in order to exercise
+  # https://github.com/mesonbuild/meson/issues/9258
+  command : [
+    find_program('python', 'python3'), '-c',
+    'import sys, shutil; shutil.copy(sys.argv[1], sys.argv[2])',
+    '@INPUT@', '@OUTDIR@',
+  ],
+)
+
 three = library('mod3', mod3_f)
 
 templates_basenames = ['mod2', 'mod1']
diff --git a/test cases/fortran/7 generated/mod3.fpp b/test cases/fortran/7 generated/mod3.f90
index ab3db65..5e4b417 100644
--- a/test cases/fortran/7 generated/mod3.fpp
+++ b/test cases/fortran/7 generated/mod3.f90
@@ -1,6 +1,6 @@
 module mod3
 implicit none
 
-integer, parameter :: modval3 = @THREE@
+integer, parameter :: modval3 = 3
 
 end module mod3