[Crash-utility] [PATCH 1/1] Support cross-compilation

[Alexander Egorenkov]

- Introduce CONF_CC variable to compile configure.c
- Introduce CONF_HOST_ARCH to configure.c to enable overriding target
  at compile time

Signed-off-by: Alexander Egorenkov <egorenar-dev at posteo.net>
---
 Makefile    |  4 ++-
 configure.c | 76 ++++++++++++++++++++++++++++-------------------------
 2 files changed, 43 insertions(+), 37 deletions(-)

diff --git a/Makefile b/Makefile
index 7455410..402be6e 100644
--- a/Makefile
+++ b/Makefile
@@ -17,6 +17,8 @@
 # GNU General Public License for more details.
 #
 
+CONF_CC = ${CC}
+
 PROGRAM=crash
 
 #
@@ -288,7 +290,7 @@ force:
 
 make_configure: force
 	@rm -f configure
-	@${CC} ${CONF_FLAGS} -o configure configure.c ${WARNING_ERROR} ${WARNING_OPTIONS}
+	@${CONF_CC} ${CONF_FLAGS} -o configure configure.c ${WARNING_ERROR} ${WARNING_OPTIONS}
 
 clean: make_configure
 	@./configure ${CONF_TARGET_FLAG} -q -b
diff --git a/configure.c b/configure.c
index 7f6d19e..d736c56 100644
--- a/configure.c
+++ b/configure.c
@@ -120,6 +120,45 @@ void add_extra_lib(char *);
 #define MIPS    11
 #define SPARC64 12
 
+#ifndef CONF_HOST_ARCH
+#ifdef __alpha__
+#define CONF_HOST_ARCH ALPHA
+#endif
+#ifdef __i386__
+#define CONF_HOST_ARCH X86
+#endif
+#ifdef __powerpc__
+#define CONF_HOST_ARCH PPC
+#endif
+#ifdef __ia64__
+#define CONF_HOST_ARCH IA64
+#endif
+#ifdef __s390__
+#define CONF_HOST_ARCH S390
+#endif
+#ifdef __s390x__
+#define CONF_HOST_ARCH S390X
+#endif
+#ifdef __powerpc64__
+#define CONF_HOST_ARCH PPC64
+#endif
+#ifdef __x86_64__
+#define CONF_HOST_ARCH X86_64
+#endif
+#ifdef __arm__
+#define CONF_HOST_ARCH ARM
+#endif
+#ifdef __aarch64__
+#define CONF_HOST_ARCH ARM64
+#endif
+#ifdef __mips__
+#define CONF_HOST_ARCH MIPS
+#endif
+#ifdef __sparc_v9__
+#define CONF_HOST_ARCH SPARC64
+#endif
+#endif // #ifndef CONF_HOST_ARCH
+
 #define TARGET_X86    "TARGET=X86"
 #define TARGET_ALPHA  "TARGET=ALPHA"
 #define TARGET_PPC    "TARGET=PPC"
@@ -349,42 +388,7 @@ get_current_configuration(struct supported_gdb_version *sp)
 	static char buf[512];
 	char *p;
 
-#ifdef __alpha__
-        target_data.target = ALPHA;
-#endif
-#ifdef __i386__
-        target_data.target = X86;
-#endif
-#ifdef __powerpc__
-        target_data.target = PPC;
-#endif
-#ifdef __ia64__
-        target_data.target = IA64;
-#endif
-#ifdef __s390__
-        target_data.target = S390;
-#endif
-#ifdef __s390x__
-        target_data.target = S390X;
-#endif
-#ifdef __powerpc64__
-        target_data.target = PPC64;
-#endif
-#ifdef __x86_64__
-        target_data.target = X86_64;
-#endif
-#ifdef __arm__
-        target_data.target = ARM;
-#endif
-#ifdef __aarch64__
-        target_data.target = ARM64;
-#endif
-#ifdef __mips__
-        target_data.target = MIPS;
-#endif
-#ifdef __sparc_v9__
-	target_data.target = SPARC64;
-#endif
+	target_data.target = CONF_HOST_ARCH;
 
 	set_initial_target(sp);
 
-- 
2.28.0