From 46a9d3a4430dc262f78596b4030d6195194c6aee Mon Sep 17 00:00:00 2001
From: Enrico Tassi <Enrico.Tassi@inria.fr>
Date: Fri, 13 Apr 2018 14:45:13 +0200
Subject: [coq_makefile] COQMF_WINDRIVE is empty on linux (fix #7233)

---
 tools/CoqMakefile.in  | 2 +-
 tools/coq_makefile.ml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/CoqMakefile.in b/tools/CoqMakefile.in
index f6539d80b..017c86c08 100644
--- a/tools/CoqMakefile.in
+++ b/tools/CoqMakefile.in
@@ -227,7 +227,7 @@ ifdef DSTROOT
 DESTDIR := $(DSTROOT)
 endif
 
-concat_path = $(if $(1),$(1)/$(subst $(COQMF_WINDRIVE),/,$(2)),$(2))
+concat_path = $(if $(1),$(1)/$(if $(COQMF_WINDRIVE),$(subst $(COQMF_WINDRIVE),/,$(2)),$(2)),$(2))
 
 COQLIBINSTALL = $(call concat_path,$(DESTDIR),$(COQLIB)user-contrib)
 COQDOCINSTALL = $(call concat_path,$(DESTDIR),$(DOCDIR)user-contrib)
diff --git a/tools/coq_makefile.ml b/tools/coq_makefile.ml
index 6cd520d60..6f11ee397 100644
--- a/tools/coq_makefile.ml
+++ b/tools/coq_makefile.ml
@@ -215,7 +215,7 @@ let generate_conf_includes oc { ml_includes; r_includes; q_includes } =
 let windrive s =
   if Coq_config.arch_is_win32 && Str.(string_match (regexp "^[a-zA-Z]:") s 0)
   then Str.matched_string s
-  else s
+  else ""
 ;;
 
 let generate_conf_coq_config oc args =
-- 
cgit v1.2.3