X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=configure.in;h=007ac14237e462ac2ce49d3097f0b64ef8d988e6;hb=ba315ca440e3989247679863fb3fdddeb0802e4d;hp=bc47064f8f7cfa2754eeaf60651b29077bf5daa6;hpb=2e832a399a10fc00253b342f8cde9c5b1062fa63;p=openocd.git

diff --git a/configure.in b/configure.in
index bc47064f8f..007ac14237 100644
--- a/configure.in
+++ b/configure.in
@@ -27,6 +27,10 @@ is_cygwin=no
 is_mingw=no
 is_win32=no
 
+AC_ARG_ENABLE(gccwarnings,
+	AS_HELP_STRING([--enable-gccwarnings], [Enable compiler warnings, default no]),
+	[gcc_warnings=$enableval], [gcc_warnings=no])
+
 AC_ARG_ENABLE(parport,
   AS_HELP_STRING([--enable-parport], [Enable building the pc parallel port driver]), 
   [build_parport=$enableval], [build_parport=no])
@@ -291,18 +295,54 @@ AC_LANG_C
 AC_PROG_CC
 AC_PROG_RANLIB
 
-AC_CHECK_PROG(OBJDUMP, objdump, objdump)
-AC_CHECK_PROG(OBJCOPY, objcopy, objcopy)
+# set default gcc warnings
+GCC_WARNINGS="-Wall -Wstrict-prototypes"
+
+# overide default gcc cflags
+if test $gcc_warnings = yes; then
+	CFLAGS="$CFLAGS $GCC_WARNINGS"
+fi
 
-if test x${OBJDUMP} != x -a x${OBJCOPY} != x ; then
-	AC_MSG_CHECKING(objcopy command line)
-	AC_TRY_COMPILE(,,[OBJCOPY_format=`${OBJDUMP} -f conftest.$ac_objext | sed -e '/file format/!d' -e 's/.*format \(.*\)/\1/'`
-					  OBJCOPY_arch=`${OBJDUMP} -f conftest.$ac_objext | sed -e '/architecture/!d' -e 's/.*architecture: \(.*\),.*/\1/'`])
-	AC_MSG_RESULT(-I binary -O ${OBJCOPY_format} -B ${OBJCOPY_arch})
+# Setup for compiling build tools
+AC_MSG_CHECKING([for a C compiler for build tools])
+if test $cross_compiling = yes; then
+	AC_CHECK_PROGS(CC_FOR_BUILD, gcc cc)
+	CFLAGS_FOR_BUILD="-g -O2 $GCC_WARNINGS"
+else
+	CC_FOR_BUILD=$CC
+	CFLAGS_FOR_BUILD=$CFLAGS
 fi
 
-AC_SUBST(OBJCOPY_FORMAT, ${OBJCOPY_format})
-AC_SUBST(OBJCOPY_ARCH, ${OBJCOPY_arch})
+AC_MSG_RESULT([$CC_FOR_BUILD])
+AC_SUBST(CC_FOR_BUILD)
+AC_SUBST(CFLAGS_FOR_BUILD)
+
+AC_MSG_CHECKING([for suffix of executable build tools])
+if test $cross_compiling = yes; then
+	cat >conftest.c <<\_______EOF
+int main ()
+{
+	exit (0);
+}
+_______EOF
+for i in .exe ""; do
+    compile="$CC_FOR_BUILD conftest.c -o conftest$i"
+    if AC_TRY_EVAL(compile); then
+		if (./conftest) 2>&AC_FD_CC; then
+			EXEEXT_FOR_BUILD=$i
+			break
+			fi
+		fi
+done
+	rm -f conftest*
+	if test "${EXEEXT_FOR_BUILD+set}" != set; then
+		AC_MSG_ERROR([Cannot determine suffix of executable build tools])
+	fi
+else
+	EXEEXT_FOR_BUILD=$EXEEXT
+fi
+AC_MSG_RESULT([$EXEEXT_FOR_BUILD])
+AC_SUBST(EXEEXT_FOR_BUILD)
 
 AC_SUBST(WITH_FTD2XX, $with_ftd2xx)