diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 62 |
1 files changed, 56 insertions, 6 deletions
@@ -1331,6 +1331,35 @@ else error_exit "\"$cc\" either does not exist or does not work" fi +# Check that the C++ compiler exists and works with the C compiler +if has $cxx; then + cat > $TMPC <<EOF +int c_function(void); +int main(void) { return c_function(); } +EOF + + compile_object + + cat > $TMPC <<EOF +extern "C" { + int c_function(void); +} +int c_function(void) { return 42; } +EOF + + if (cc=$cxx do_cc $QEMU_CFLAGS -o $TMPE $TMPC $TMPO $LDFLAGS); then + # C++ compiler $cxx works ok with C compiler $cc + : + else + echo "C++ compiler $cxx does not work with C compiler $cc" + echo "Disabling C++ specific optional code" + cxx= + fi +else + echo "No C++ compiler available; disabling C++ specific optional code" + cxx= +fi + # Consult white-list to determine whether to enable werror # by default. Only enable by default for git builds z_version=`cut -f3 -d. $source_path/VERSION` @@ -3452,15 +3481,25 @@ fi # For 'ust' backend, test if ust headers are present if test "$trace_backend" = "ust"; then cat > $TMPC << EOF -#include <ust/tracepoint.h> -#include <ust/marker.h> +#include <lttng/tracepoint.h> int main(void) { return 0; } EOF if compile_prog "" "" ; then - LIBS="-lust -lurcu-bp $LIBS" - libs_qga="-lust -lurcu-bp $libs_qga" + if $pkg_config lttng-ust --exists; then + lttng_ust_libs=`$pkg_config --libs lttng-ust` + else + lttng_ust_libs="-llttng-ust" + fi + if $pkg_config liburcu-bp --exists; then + urcu_bp_libs=`$pkg_config --libs liburcu-bp` + else + urcu_bp_libs="-lurcu-bp" + fi + + LIBS="$lttng_ust_libs $urcu_bp_libs $LIBS" + libs_qga="$lttng_ust_libs $urcu_bp_libs $libs_qga" else - error_exit "Trace backend 'ust' missing libust header files" + error_exit "Trace backend 'ust' missing lttng-ust header files" fi fi @@ -3637,7 +3676,18 @@ cpuid_h=no cat > $TMPC << EOF #include <cpuid.h> int main(void) { - return 0; + unsigned a, b, c, d; + int max = __get_cpuid_max(0, 0); + + if (max >= 1) { + __cpuid(1, a, b, c, d); + } + + if (max >= 7) { + __cpuid_count(7, 0, a, b, c, d); + } + + return 0; } EOF if compile_prog "" "" ; then |