[freetype2] master 11beee8: Allow setting `CC' in Unix build (#58051).

[Werner LEMBERG]

branch: master
commit 11beee855e29757a07320fd60e85de2e8da4e037
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    Allow setting `CC' in Unix build (#58051).
    
    * builds/unix/unix-cc.in (CC): Use `override'.  The command line
      value of `CC' (if any) is stored already in `CCraw'.
---
 ChangeLog              | 7 +++++++
 builds/unix/unix-cc.in | 8 ++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a3a84ef..f1ca56a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2020-04-08  Werner Lemberg  <address@hidden>
+
+       Allow setting `CC' in Unix build (#58051).
+
+       * builds/unix/unix-cc.in (CC): Use `override'.  The command line
+         value of `CC' (if any) is stored already in `CCraw'.
+
 2020-04-04  Nikhil Ramakrishnan  <address@hidden>
 
        [woff2] Return if single stream operation fails.
diff --git a/builds/unix/unix-cc.in b/builds/unix/unix-cc.in
index 42e5e8d..470ac23 100644
--- a/builds/unix/unix-cc.in
+++ b/builds/unix/unix-cc.in
@@ -87,8 +87,12 @@ ANSIFLAGS := @XX_ANSIFLAGS@
 
 # C compiler to use -- we use libtool!
 #
-CCraw := $(CC)
-CC    := $(LIBTOOL) --mode=compile $(CCraw)
+# CC might be set on the command line; we store this value in `CCraw'.
+# Consequently, we use the `override' directive to ensure that the
+# libtool call is always prepended.
+#
+CCraw       := $(CC)
+override CC := $(LIBTOOL) --mode=compile $(CCraw)
 
 # Resource compiler to use on Cygwin/MinGW, usually windres.
 #