From 4ba40ee527f844a804be571e52d9dc5447ae4cdd Mon Sep 17 00:00:00 2001
From: Changqing Li <changqing.li@windriver.com>
Date: Mon, 22 Oct 2018 15:19:51 +0800
Subject: [PATCH] python3: use cc_basename to replace CC for checking compiler

When working path contains "clang"/"gcc"/"icc", it might be part of $CC
because of the "--sysroot" parameter. That could cause judgement error
about clang/gcc/icc compilers. e.g.
When "icc" is containded in working path, below errors are reported when
compiling python3:
x86_64-wrs-linux-gcc: error: strict: No such file or directory
x86_64-wrs-linux-gcc: error: unrecognized command line option '-fp-model'

Here use cc_basename to replace CC for checking compiler to avoid such
kind of issue.

Upstream-Status: Submitted [https://github.com/python/cpython/pull/96399]

Signed-off-by: Li Zhou <li.zhou@windriver.com>

patch originally from Li Zhou, I just rework it to new version

Signed-off-by: Changqing Li <changqing.li@windriver.com>

---
 configure.ac | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/configure.ac b/configure.ac
index 90008bc..bf56195 100644
--- a/configure.ac
+++ b/configure.ac
@@ -134,6 +134,7 @@ AC_CONFIG_HEADERS([pyconfig.h])
 AC_CANONICAL_HOST
 AC_SUBST(build)
 AC_SUBST(host)
+LT_INIT
 
 AS_VAR_IF([cross_compiling], [maybe],
  [AC_MSG_ERROR([Cross compiling required --host=HOST-TUPLE and --build=ARCH])]
@@ -887,7 +888,7 @@ AC_MSG_RESULT($with_cxx_main)
 preset_cxx="$CXX"
 if test -z "$CXX"
 then
-        case "$CC" in
+        case "$cc_basename" in
         gcc)    AC_PATH_TOOL(CXX, [g++], [g++], [notfound]) ;;
         cc)     AC_PATH_TOOL(CXX, [c++], [c++], [notfound]) ;;
         clang|*/clang)     AC_PATH_TOOL(CXX, [clang++], [clang++], [notfound]) ;;
@@ -1300,7 +1301,7 @@ rmdir CaseSensitiveTestDir
 
 case $ac_sys_system in
 hp*|HP*)
-    case $CC in
+    case $cc_basename in
     cc|*/cc) CC="$CC -Ae";;
     esac;;
 esac
@@ -1834,7 +1835,7 @@ esac
 ],
 [AC_MSG_RESULT(no)])
 if test "$Py_LTO" = 'true' ; then
-  case $CC in
+  case $cc_basename in
     *clang*)
       LDFLAGS_NOLTO="-fno-lto"
       dnl Clang linker requires -flto in order to link objects with LTO information.
@@ -1955,7 +1956,7 @@ then
   fi
 fi
 LLVM_PROF_ERR=no
-case $CC in
+case $cc_basename in
   *clang*)
     # Any changes made here should be reflected in the GCC+Darwin case below
     PGO_PROF_GEN_FLAG="-fprofile-instr-generate"
@@ -2016,7 +2017,7 @@ esac
 # compiler and platform.  BASECFLAGS tweaks need to be made even if the
 # user set OPT.
 
-case $CC in
+case $cc_basename in
     *clang*)
         cc_is_clang=1
         ;;
@@ -2235,7 +2236,7 @@ yes)
 
     # ICC doesn't recognize the option, but only emits a warning
     ## XXX does it emit an unused result warning and can it be disabled?
-    AS_CASE([$CC],
+    AS_CASE([$cc_basename],
             [*icc*], [ac_cv_disable_unused_result_warning=no]
             [PY_CHECK_CC_WARNING([disable], [unused-result])])
     AS_VAR_IF([ac_cv_disable_unused_result_warning], [yes],
@@ -2477,7 +2478,7 @@ yes)
     ;;
 esac
 
-case "$CC" in
+case "$cc_basename" in
 *icc*)
     # ICC needs -fp-model strict or floats behave badly
     CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict"
@@ -3319,7 +3320,7 @@ then
 		then
 			LINKFORSHARED="-Wl,--export-dynamic"
 		fi;;
-	SunOS/5*) case $CC in
+	SunOS/5*) case $cc_basename in
 		  *gcc*)
 		    if $CC -Xlinker --help 2>&1 | grep export-dynamic >/dev/null
 		    then
@@ -6410,7 +6411,7 @@ if test "$ac_cv_gcc_asm_for_x87" = yes; then
     # Some versions of gcc miscompile inline asm:
     # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491
     # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html
-    case $CC in
+    case $cc_basename in
         *gcc*)
             AC_MSG_CHECKING(for gcc ipa-pure-const bug)
             saved_cflags="$CFLAGS"