[jhbuild] cmake: Add FIXME

[Michael Catanzaro <mcatanzaro src gnome org>]

commit cec5587fcbe7186cb145163f8f284f482ee2ec7a
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Nov 22 09:42:18 2016 -0600

    cmake: Add FIXME

 jhbuild/modtypes/cmake.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/jhbuild/modtypes/cmake.py b/jhbuild/modtypes/cmake.py
index 079d564..8599ec7 100644
--- a/jhbuild/modtypes/cmake.py
+++ b/jhbuild/modtypes/cmake.py
@@ -95,6 +95,7 @@ class CMakeModule(MakeModule, DownloadableModule):
             # remove that file, as it holds the result of a previous cmake
             # configure run, and would be reused unconditionnaly
             # (cf https://bugzilla.gnome.org/show_bug.cgi?id=621194)
+            # FIXME: It's always wrong to remove CMakeCache.txt without also removing CMakeFiles directory
             os.unlink(os.path.join(builddir, 'CMakeCache.txt'))
         buildscript.execute(cmd, cwd = builddir, extra_env = self.extra_env)
     do_configure.depends = [PHASE_CHECKOUT]