shithub: freetype+ttf2subf

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autogen.sh: Only copy submodules if building from a git branch.

`autogen.sh` fails if building from a standard source tarball.  Firstly, git
expects to be called in a git repository, then `copy_submodule_files`
blindly attempts to copy files.

Debian, Ubuntu, Linux Mint, and other derivatives all run `autogen.sh`
before compiling to regenerate build files.

This patch ensures that various git commands are only called and 'dlg' files
are only copied if `autogen.sh` is called from a git repository.

git/fs: mount .git/fs: mount/attach disallowed

--- a/autogen.sh

+++ b/autogen.sh

@@ -182,17 +182,19 @@

   cp $DLG_SRC_DIR/* src/dlg

 }

-DLG_INC_DIR=subprojects/dlg/include/dlg

-DLG_SRC_DIR=subprojects/dlg/src/dlg

+if test -d ".git"; then

+  DLG_INC_DIR=subprojects/dlg/include/dlg

+  DLG_SRC_DIR=subprojects/dlg/src/dlg

-if test -d "$DLG_INC_DIR"; then

-  :

-else

-  echo "Checking out submodule in \`subprojects/dlg':"

-  git submodule init

-  git submodule update

-fi

+  if test -d "$DLG_INC_DIR"; then

+    :

+  else

+    echo "Checking out submodule in \`subprojects/dlg':"

+    git submodule init

+    git submodule update

+  fi

-copy_submodule_files

+  copy_submodule_files

+fi

 # EOF