Fix make distcheck

Author: drfiemost

Makefile.am

@@ -37,11 +37,31 @@ bin_PROGRAMS = \
 src/sidplayfp \
 src/stilview
 
+#=========================================================
+#fmt
+fmt_SOURCES = \
+libs/fmt/args.h \
+libs/fmt/base.h \
+libs/fmt/chrono.h \
+libs/fmt/color.h \
+libs/fmt/compile.h \
+libs/fmt/core.h \
+libs/fmt/format-inl.h \
+libs/fmt/format.cc \
+libs/fmt/format.h \
+libs/fmt/os.cc \
+libs/fmt/os.h \
+libs/fmt/ostream.h \
+libs/fmt/printf.h \
+libs/fmt/ranges.h \
+libs/fmt/std.h \
+libs/fmt/xchar.h
+
 #=========================================================
 # sidplayfp
 
 src_sidplayfp_SOURCES = \
-libs/fmt/format.cc \
+$(fmt_SOURCES) \
 src/IniConfig.cpp \
 src/IniConfig.h \
 src/args.cpp \
@@ -104,7 +124,7 @@ $(W32_LIBS)
 # stilview
 
 src_stilview_SOURCES = \
-libs/fmt/format.cc \
+$(fmt_SOURCES) \
 src/codeConvert.cpp \
 src/codeConvert.h \
 $(ICONV_SOURCES) \