Makefile: fix for #865.

Buildsystem wants CXX to be defined as $(CXX).
Otherwise it fallbacks to default value, which does not contain
"-std=c++11" statement.

Other changes (like CC=$(CC) and CFLAGS=$(CFLAGS) instead of CXX ones)
is not directly fix the issue, but fix cases, where CFLAGS (and CC)
differs from CXX* ones, so it could lead to similar errors in the future.

diff --git a/Makefile.am b/Makefile.am
index 7d22a60f47dd9f494d51ed33a830778e2fcc3392..82a3eb7ccd752bc4eec4919e0acbe9780db1a124 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -647,7 +647,7 @@ PDIR = bindings/python
 PDOC_START = bindings/python/sigrok/core/doc_start.i
 PDOC_END = bindings/python/sigrok/core/doc_end.i
 
-setup_vars = VERSION='$(PACKAGE_VERSION)' CC='$(CXX)' CFLAGS='$(CXXFLAGS) $(SR_WXXFLAGS) $(PYSIGROK_CFLAGS)' CXXFLAGS='$(CXXFLAGS) $(SR_WXXFLAGS) $(PYSIGROK_CFLAGS)' LDADD='$(PYSIGROK_LIBS)'
+setup_vars = VERSION='$(PACKAGE_VERSION)' CC='$(CC)' CXX='$(CXX)' CFLAGS='$(CFLAGS) $(SR_WXXFLAGS) $(PYSIGROK_CFLAGS)' CXXFLAGS='$(CXXFLAGS) $(SR_WXXFLAGS) $(PYSIGROK_CFLAGS)' LDADD='$(PYSIGROK_LIBS)'
 setup_quiet = --quiet
 setup_py = $(PYTHON) $(srcdir)/$(PDIR)/setup.py $(setup_vars) $(setup_quiet)