[freetype2] master e622c3c4c 1/2: Improve the build rule for `apinames`.

[Werner Lemberg]

branch: master
commit e622c3c4cdbfd9549393a0f5866f6d5a3e67dd0a
Author: suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
Commit: suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>

    Improve the build rule for `apinames`.
    
    * builds/unix/configure.raw: copy `CFLAGS` &
    `LDFLAGS` values to `CFLAGS_BUILD` &
    `LDFLAGS_BUILD`, in a self-hosting case.
    
    * builds/unix/unix-cc.in: set `CCexe_CFLAGS` &
    `CCexe_LDFLAGS` by `CFLAGS_BUILD` &
    `LDFLAGS_BUILD`.
    
    In some confused environments, simple building
    like `cc -o apinames apinames.c` is no longer
    able to build an executable running on the host.
    
    The validity of `CC` is tested with consideration
    of `CFLAGS` and `LDFLAGS`, thus, duplicating
    `CFLAGS` & `LDFLAGS` to `CCexe_CFLAGS` &
    `CCexe_LDFLAGS` (via XXX_BUILD) would be slightly
    safer in a self-hosting build.
    
    Fixes the issue #1296.
---
 builds/unix/configure.raw | 6 ++++++
 builds/unix/unix-cc.in    | 4 +++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/builds/unix/configure.raw b/builds/unix/configure.raw
index 7a795cbc0..0aa5e6558 100644
--- a/builds/unix/configure.raw
+++ b/builds/unix/configure.raw
@@ -62,12 +62,18 @@ if test ${cross_compiling} = yes; then
   fi
   rm -f a.* b.* a_out.exe conftest.*
   AC_MSG_RESULT($EXEEXT_BUILD)
+  CFLAGS_BUILD=
+  LDFLAGS_BUILD=
 else
   CC_BUILD=${CC}
+  CFLAGS_BUILD=${CFLAGS}
+  LDFLAGS_BUILD=${LDFLAGS}
   EXEEXT_BUILD=${EXEEXT}
 fi
 
 AC_SUBST(CC_BUILD)
+AC_SUBST(CFLAGS_BUILD)
+AC_SUBST(LDFLAGS_BUILD)
 AC_SUBST(EXEEXT_BUILD)
 
 
diff --git a/builds/unix/unix-cc.in b/builds/unix/unix-cc.in
index aafad2f97..9e329d23f 100644
--- a/builds/unix/unix-cc.in
+++ b/builds/unix/unix-cc.in
@@ -113,7 +113,9 @@ LDFLAGS := @LDFLAGS@
 CCraw_build  := @CC_BUILD@     # native CC of building system
 E_BUILD      := @EXEEXT_BUILD@ # extension for executable on building system
 EXPORTS_LIST := $(OBJ_DIR)/ftexport.sym
-CCexe        := $(CCraw_build) # used to compile `apinames' only
+CCexe        := $(CCraw_build) # used to compile `apinames' only, see 
exports.mk
+CCexe_CFLAGS := @CFLAGS_BUILD@ # ditto.
+CCexe_LDFLAGS := @LDFLAGS_BUILD@       # ditto.
 
 
 # Library linking.