X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=configure.in;h=7ed61b25506a8809e982f0f810bfae592421a642;hp=6f67a4a38abb32bc66a0fccb332d0ee05f4edb06;hb=503bb08f9993c59a4b3206600555a42fd18459b6;hpb=7ccfcdea0b51de1cd23694dee1e72682fc6d757d

diff --git a/configure.in b/configure.in
index 6f67a4a38a..7ed61b2550 100644
--- a/configure.in
+++ b/configure.in
@@ -20,6 +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
@@ -27,6 +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])
@@ -58,16 +63,16 @@ AC_ARG_ENABLE(amtjtagaccel,
   AS_HELP_STRING([--enable-amtjtagaccel], [Enable building the Amontec JTAG-Accelerator driver]), 
   [build_amtjtagaccel=$enableval], [build_amtjtagaccel=no])
 
+AC_ARG_ENABLE(ecosboard,
+  AS_HELP_STRING([--enable-ecosboard], [Enable building support for eCosBoard based JTAG debugger]), 
+  [build_ecosboard=$enableval], [build_ecosboard=no])
+
 case "${host_cpu}" in 
   arm*)
     AC_ARG_ENABLE(ep93xx,
       AS_HELP_STRING([--enable-ep93xx], [Enable building support for EP93xx based SBCs]), 
       [build_ep93xx=$enableval], [build_ep93xx=no])
 
-	AC_ARG_ENABLE(ecosboard,
-	  AS_HELP_STRING([--enable-ecosboard], [Enable building support for eCosBoard based JTAG debugger]), 
-	  [build_ecosboard=$enableval], [build_ecosboard=no])
-
     AC_ARG_ENABLE(at91rm9200,
       AS_HELP_STRING([--enable-at91rm9200], [Enable building support for AT91RM9200 based SBCs]),
       [build_at91rm9200=$enableval], [build_at91rm9200=no])
@@ -76,7 +81,6 @@ case "${host_cpu}" in
   *) 
     build_ep93xx=no
     build_at91rm9200=no
-	build_ecosboard=no
     ;;
 esac
 
@@ -291,15 +295,24 @@ 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
+	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)