[PATCH 1/5] try generic compiler name "cc" before falling back to "gcc".

[Rob Landley]

Distros like debian install the generic "cc" name for both gcc and clang,
and the plumbing already does CC_VERSION_TEXT to include Makefile.clang.

Previously: https://lkml.iu.edu/hypermail/linux/kernel/2202.0/01505.html
Signed-off-by: Rob Landley <rob@xxxxxxxxxxx>
---
 Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 3f6628780eb2..0ac57ae3b45f 100644
--- a/Makefile
+++ b/Makefile
@@ -456,7 +456,7 @@ endif
 HOSTCC	= $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
 HOSTCXX	= $(LLVM_PREFIX)clang++$(LLVM_SUFFIX)
 else
-HOSTCC	= gcc
+HOSTCC	:= $(shell cc --version >/dev/null 2>&1 && echo cc || echo gcc)
 HOSTCXX	= g++
 endif
 HOSTRUSTC = rustc
@@ -503,7 +503,8 @@ OBJDUMP		= $(LLVM_PREFIX)llvm-objdump$(LLVM_SUFFIX)
 READELF		= $(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX)
 STRIP		= $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)
 else
-CC		= $(CROSS_COMPILE)gcc
+CC		:= $(CROSS_COMPILE)$(shell $(CROSS_COMPILE)cc --version \
+			>/dev/null 2>&1 && echo cc || echo gcc)
 LD		= $(CROSS_COMPILE)ld
 AR		= $(CROSS_COMPILE)ar
 NM		= $(CROSS_COMPILE)nm