build: Silence language bindings building.

[libsigrok.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index c8992ba1350af9df76c2dbe2a48200a4732139c0..cf7e8dc294277c3f96ba8cec38792a97f78ef513 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -46,10 +46,12 @@ AH_BOTTOM([#endif /* SR_CONFIG_H */])
 # and enforce use of SR_API to explicitly mark all public API functions.
 COMMON_FLAGS="$CFLAGS -Wall -Wextra -fvisibility=hidden"
 CFLAGS="$COMMON_FLAGS -Wmissing-prototypes"
+CXXFLAGS="-std=c++11 $COMMON_FLAGS"
 
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
+AC_PROG_CXX
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
@@ -152,6 +154,67 @@ AC_ARG_ENABLE(libusb,
        AC_HELP_STRING([--disable-libusb],
        [disable libusb support [default=detect]]))
 
+# Language binding '--enable' options
+
+AC_ARG_ENABLE(bindings,
+       AC_HELP_STRING([--enable-bindings],
+       [build language bindings [default=yes]]),
+       [BINDINGS_ALL="$enableval"], [BINDINGS_ALL="yes"])
+
+AC_ARG_ENABLE(cxx,
+       AC_HELP_STRING([--enable-cxx],
+       [build C++ bindings [default=yes]]),
+       [BINDINGS_CXX="$enableval"], [BINDINGS_CXX=$BINDINGS_ALL])
+
+AC_ARG_ENABLE(python,
+       AC_HELP_STRING([--enable-python],
+       [build Python bindings [default=yes]]),
+       [BINDINGS_PYTHON="$enableval"], [BINDINGS_PYTHON=$BINDINGS_ALL])
+
+AC_ARG_ENABLE(java,
+       AC_HELP_STRING([--enable-java],
+       [build Java bindings [default=yes]]),
+       [BINDINGS_JAVA="$enableval"], [BINDINGS_JAVA=$BINDINGS_ALL])
+
+# Check if the C++ compiler supports the C++11 standard.
+
+m4_ifdef([AX_CXX_COMPILE_STDCXX_11], [AX_CXX_COMPILE_STDCXX_11(,[optional])],
+       [AC_MSG_NOTICE([Missing macro m4_toupper(aX_CXX_COMPILE_STDCXX_11), no C++11 check])])
+
+if test "x$HAVE_CXX11" != "x1"; then
+       BINDINGS_CXX="no"
+fi
+
+# The C++ bindings use gccxml to parse libsigrok symbols.
+AC_CHECK_PROG([HAVE_GCCXML], [gccxml], [yes])
+if test "x$HAVE_GCCXML" != "xyes"; then
+       BINDINGS_CXX="no"
+fi
+
+# Python is needed for the C++ (and Python) bindings.
+PKG_CHECK_MODULES([python], [python3 >= 2.7],
+        [CXXFLAGS="$CXXFLAGS $python_CFLAGS";
+        CXXLIBS="$CXXLIBS $python_LIBS"],
+               [BINDINGS_CXX="no"])
+
+# The C++ bindings need the pygccxml Python module.
+m4_ifdef([AX_PYTHON_MODULE], [AX_PYTHON_MODULE([pygccxml])],
+       # We'll let it go through even if the macro wasn't found, the python
+       # module may still be there.
+       [HAVE_PYTHON_PYGCCXML="yes";
+               AC_MSG_NOTICE([Missing macro m4_toupper(aX_PYTHON_MODULE), no pygccxml check])]
+)
+if test "x$HAVE_PYMOD_PYGCCXML" != "xyes"; then
+       BINDINGS_CXX="no"
+fi
+
+# Python and Java bindings depend on C++ bindings.
+
+if test "x$BINDINGS_CXX" != "xyes"; then
+       BINDINGS_PYTHON="no"
+       BINDINGS_JAVA="no"
+fi
+
 # Checks for libraries.
 
 case "$host" in
@@ -301,6 +364,21 @@ if test "x$have_libftdi" = "xno"; then
        HW_ASIX_SIGMA="no"; HW_CHRONOVU_LA="no"; HW_IKALOGIC_SCANAPLUS="no";
 fi
 
+# glibmm-2.4 is needed for the C++ bindings.
+PKG_CHECK_MODULES([glibmm], [glibmm-2.4 >= 2.32.0],
+       [CXXFLAGS="$CXXFLAGS $glibmm_CFLAGS";
+       CXXLIBS="$CXXLIBS $glibmm_LIBS"], [BINDINGS_CXX="no"])
+
+# PyGObject is needed for the Python bindings.
+PKG_CHECK_MODULES([pygobject], [pygobject-3.0],
+        [CXXFLAGS="$CXXFLAGS $pygobject_CFLAGS";
+        CXXLIBS="$CXXLIBS $pygobject_LIBS";
+       PKG_CHECK_MODULES([pygobject_3_7_91], [pygobject-3.0 >= 3.7.91],
+               [pyg_flags_signed=0], [pyg_flags_signed=1]);
+       AC_DEFINE_UNQUOTED(PYGOBJECT_FLAGS_SIGNED, [$pyg_flags_signed],
+               [Whether last argument to pyg_flags_get_value() is signed])],
+       [BINDINGS_PYTHON="no"])
+
 # The Check unit testing framework is optional. Disable if not found.
 PKG_CHECK_MODULES([check], [check >= 0.9.4],
        [have_check="yes"], [have_check="no"])
@@ -316,7 +394,22 @@ esac
 
 AC_SUBST(SR_PKGLIBS)
 
-CFLAGS="$CFLAGS $LIB_CFLAGS"
+CFLAGS="$CFLAGS -I./include/libsigrok $LIB_CFLAGS"
+CXXFLAGS="$CXXFLAGS -I./include -I./bindings/cxx/include $LIB_CFLAGS"
+
+# Find Java compiler and JNI includes for Java bindings.
+
+AC_CHECK_PROG([HAVE_JAVAC], [javac], [yes], [no])
+
+if test "x$HAVE_JAVAC" = "xyes"; then
+       AX_PROG_JAVAC
+       AX_JNI_INCLUDE_DIR
+       for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS; do
+               CXXFLAGS="$CXXFLAGS -I$JNI_INCLUDE_DIR"
+       done
+else
+       BINDINGS_JAVA="no"
+fi
 
 # Now set AM_CONDITIONALs and AC_DEFINEs for the enabled/disabled drivers.
 
@@ -505,6 +598,12 @@ if test "x$HW_ZEROPLUS_LOGIC_CUBE" = "xyes"; then
        AC_DEFINE(HAVE_HW_ZEROPLUS_LOGIC_CUBE, 1, [ZEROPLUS Logic Cube support])
 fi
 
+AM_CONDITIONAL(BINDINGS_CXX, test x$BINDINGS_CXX = xyes)
+
+AM_CONDITIONAL(BINDINGS_PYTHON, test x$BINDINGS_PYTHON = xyes)
+
+AM_CONDITIONAL(BINDINGS_JAVA, test x$BINDINGS_JAVA = xyes)
+
 # Checks for header files.
 # These are already checked: inttypes.h stdint.h stdlib.h string.h unistd.h.
 
@@ -525,7 +624,8 @@ AC_SUBST(SR_PACKAGE_VERSION_MINOR)
 AC_SUBST(SR_PACKAGE_VERSION_MICRO)
 AC_SUBST(SR_PACKAGE_VERSION)
 
-AC_CONFIG_FILES([Makefile version.h libsigrok.pc])
+AC_CONFIG_FILES([Makefile include/libsigrok/version.h libsigrok.pc
+       bindings/cxx/libsigrokxx.pc])
 
 AC_OUTPUT
 
@@ -557,3 +657,8 @@ done
 
 echo -e "\nEnabled hardware drivers:\n${driver_summary}"
 
+echo -e "\nEnabled language bindings:\n"
+echo "  - C++............................. $BINDINGS_CXX"
+echo "  - Python.......................... $BINDINGS_PYTHON"
+echo "  - Java............................ $BINDINGS_JAVA"
+echo