# AT_COMPILE(OUTPUT, [SOURCES = OUTPUT.c])
# ----------------------------------------
-# Compile SOURCES into OUTPUT. If OUTPUT does not contain '.',
-# assume that we are linking too; this is a hack.
+# Compile SOURCES into OUTPUT.
+#
+# If OUTPUT does not contain '.', assume that we are linking too,
+# otherwise pass "-c"; this is a hack. The default SOURCES is OUTPUT
+# with trailing .o removed, and ".c" appended.
m4_define([AT_COMPILE],
-[AT_CHECK([$CC $CFLAGS $CPPFLAGS m4_bmatch([$1], [[.]], [], [$LDFLAGS ])-o $1 m4_default([$2], [$1.c])[]m4_bmatch([$1], [[.]], [], [ $LIBS])],
+[AT_CHECK(m4_join([ ],
+ [$CC $CFLAGS $CPPFLAGS],
+ [m4_bmatch([$1], [[.]], [-c], [$LDFLAGS])],
+ [-o $1],
+ [m4_default([$2], [m4_bpatsubst([$1], [\.o$]).c])],
+ [m4_bmatch([$1], [[.]], [], [$LIBS])]),
0, [ignore], [ignore])])
# AT_COMPILE_CXX(OUTPUT, [SOURCES = OUTPUT.cc])
-# --------------------------------------------
-# Compile SOURCES into OUTPUT. If OUTPUT does not contain '.',
-# assume that we are linking too; this is a hack.
-# If the C++ compiler does not work, ignore the test.
+# ---------------------------------------------
+# Compile SOURCES into OUTPUT. If the C++ compiler does not work,
+# ignore the test.
+#
+# If OUTPUT does not contain '.', assume that we are linking too,
+# otherwise pass "-c"; this is a hack. The default SOURCES is OUTPUT
+# with trailing .o removed, and ".cc" appended.
m4_define([AT_COMPILE_CXX],
[AT_KEYWORDS(c++)
AT_CHECK([$BISON_CXX_WORKS], 0, ignore, ignore)
-AT_CHECK([$CXX $CXXFLAGS $CPPFLAGS m4_bmatch([$1], [[.]], [], [$LDFLAGS ])-o $1 m4_default([$2], [$1.cc])[]m4_bmatch([$1], [[.]], [], [ $LIBS])],
+AT_CHECK(m4_join([ ],
+ [$CXX $CXXFLAGS $CPPFLAGS],
+ [m4_bmatch([$1], [[.]], [-c], [$LDFLAGS])],
+ [-o $1],
+ [m4_default([$2], [m4_bpatsubst([$1], [\.o$]).cc])],
+ [m4_bmatch([$1], [[.]], [], [$LIBS])]),
0, [ignore], [ignore])])
# AT_JAVA_COMPILE(SOURCES)
# AT_LANG_COMPILE(OUTPUT, [SOURCES = OUTPUT.c]
# --------------------------------------------
+# Compile SOURCES into OUTPUT. Skip if compiler does not work.
+#
+# If OUTPUT does not contain '.', assume that we are linking too,
+# otherwise pass "-c"; this is a hack. The default SOURCES is OUTPUT
+# with trailing .o removed, and ".c"/".cc" appended.
m4_define([AT_LANG_COMPILE],
[m4_case(AT_LANG,
[c], [AT_COMPILE([$1], [$2])],
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([input.o])
AT_COMPILE([input.o], [-DYYDEBUG -c input.c])
AT_CLEANUP
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([input.o])
AT_CLEANUP
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-y -o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([input.o])
AT_CLEANUP
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([input.o])
AT_CLEANUP
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([-o input.c input.y])
-AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([input.o])
AT_CLEANUP