X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=configure.in;h=f3414f8ccded635c9869c11e58bd36786257770e;hb=f5507d89293f00458f88624ffa98434d58b91e0f;hp=eebbc37643c85d4a36a10cdf294e02289a4e091b;hpb=548bb19aa28ca2eec4b8f1c06cbb4b0ace162db3;p=openocd.git

diff --git a/configure.in b/configure.in
index eebbc37643..f3414f8ccd 100644
--- a/configure.in
+++ b/configure.in
@@ -1,10 +1,11 @@
 AC_PREREQ(2.59)
 AC_INIT(configure.in)
 
-AC_SEARCH_LIBS([ioperm], [ioperm])
-
 AC_CANONICAL_HOST
 
+AC_SEARCH_LIBS([ioperm], [ioperm])
+AC_SEARCH_LIBS([dlopen], [dl])
+
 AC_CHECK_HEADERS(jtag_minidriver.h)
 AC_CHECK_HEADERS(sys/param.h)
 AC_CHECK_HEADERS(sys/time.h)
@@ -19,6 +20,7 @@ AC_CHECK_FUNCS(strndup)
 AC_CHECK_FUNCS(strnlen)
 AC_CHECK_FUNCS(gettimeofday)
 AC_CHECK_FUNCS(usleep)
+AC_CHECK_FUNCS(vasprintf)
 
 build_bitbang=no
 build_bitq=no
@@ -26,6 +28,10 @@ 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])
@@ -290,6 +296,55 @@ AC_LANG_C
 AC_PROG_CC
 AC_PROG_RANLIB
 
+# set default gcc warnings
+GCC_WARNINGS="-Wall -Wstrict-prototypes"
+
+# overide default gcc cflags
+if test $gcc_warnings = yes; then
+	CFLAGS="$CFLAGS $GCC_WARNINGS"
+fi
+
+# 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=$CFLAGS
+fi
+
+AC_MSG_RESULT([$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)
 
 AC_OUTPUT(Makefile src/Makefile src/helper/Makefile src/jtag/Makefile src/xsvf/Makefile src/target/Makefile src/server/Makefile src/flash/Makefile src/pld/Makefile doc/Makefile)