2006-12-19 00:16:41 +01:00
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Note that GCC 4.0 will optimize ceil (constant), we therefore
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have to make the argument non-constant.
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2007-02-15 18:13:22 +01:00
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================================================================================
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2006-12-19 00:16:41 +01:00
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--- configure.in
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+++ configure.in
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@@ -91,6 +91,25 @@
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AC_CHECK_FUNCS(vsyslog syslog)
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AC_FUNC_ALLOCA
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+AC_MSG_CHECKING(for ceil)
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+AC_TRY_LINK([#define __NO_MATH_INLINES 1
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+ double d;],
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+ [d = ceil(1.0*d);],
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+ SYNLDFLAGS=""
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+ AC_MSG_RESULT(yes),
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+ SYNLDFLAGS=-lm
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+ AC_MSG_RESULT(no))
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+
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+if test "$SYNLDFLAGS" = "-lm" ; then
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+ SAVE_LIBS="$LIBS"
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+ AC_CHECK_LIB(m,
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+ ceil,
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+ ,
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+ echo "libmath.so is needed due the ceil function"
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+ exit 1)
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+ LIBS="$SAVE_LIBS"
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+fi
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+
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case $with_curses in
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No|no|N|n) SHARED_LIBS=-lc ;;
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*)
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@@ -123,6 +142,7 @@
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AC_SUBST(SHLIB)
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AC_SUBST(PICFLAGS)
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AC_SUBST(SOLDFLAGS)
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+AC_SUBST(SYNLDFLAGS)
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AC_SUBST(CURSES_OBJS)
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AC_SUBST(SHARED_LIBS)
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AC_SUBST(lispdir)
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--- src/Makefile.in
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+++ src/Makefile.in
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@@ -70,6 +70,7 @@
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all: gpm lib/@SHLIB@ lib/libgpm.a $(PROG)
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gpm: $(GOBJ)
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+ $(CC) @LDFLAGS@ @SYNLDFLAGS@ $(GOBJ) -o gpm
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# construct dependings of sourcefiles and link sourcefiles
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$(DEPFILE) dep: prog/gpm-root.c
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2007-02-15 18:13:22 +01:00
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@@ -155,7 +156,7 @@
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2006-12-19 00:16:41 +01:00
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lib/libgpm.so.@abi_full@: $(PICS)
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$(CC) @SOLDFLAGS@libgpm.so.@abi_lev@ \
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- @LDFLAGS@ $(LDFLAGS) -o lib/libgpm.so.@abi_full@ $^ @LIBS@ @SHARED_LIBS@ $(LIBS)
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+ @LDFLAGS@ $(LDFLAGS) -o lib/libgpm.so.@abi_full@ $^ @LIBS@ @SHARED_LIBS@ @SYNLDFLAGS@ $(LIBS)
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lib/libgpm.so: lib/libgpm.so.@abi_full@
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$(LN_S) -f libgpm.so.@abi_full@ lib/libgpm.so
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