110 lines
3.1 KiB
Bash
110 lines
3.1 KiB
Bash
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#! /bin/sh
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# Generate gcc's config.h, which is not your normal autoconf-generated
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# config.h (that's auto-(host|build).h). $1 is the file to generate.
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# HEADERS, DEFINES, and possibly TARGET_CPU_DEFAULT are expected to be
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# set in the environment.
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if [ -z "$1" ]; then
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echo "Usage: HEADERS='list' DEFINES='list' mkconfig.sh FILE" >&2
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exit 1
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fi
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output=$1
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rm -f $output.T
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# We used to exec > $output.T but apparently this has bugs.
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# Use a redirected subshell instead.
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(
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# Define TARGET_CPU_DEFAULT if the system wants one.
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# This substitutes for lots of *.h files.
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if [ "$TARGET_CPU_DEFAULT" != "" ]; then
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echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)"
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fi
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# The first entry in HEADERS may be auto-host.h or auto-build.h;
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# it wants to be included even when not -DIN_GCC.
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if [ -n "$HEADERS" ]; then
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set $HEADERS; first=$1
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case $first in auto-* )
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echo "#include \"$first\""
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shift
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HEADERS=$*
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;;
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esac
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fi
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# Provide three core typedefs used by everything, if we are compiling
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# GCC. These used to be found in rtl.h and tree.h, but this is no
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# longer practical. Providing these in config.h/tconfig.h/hconfig.h
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# rather than system.h allows the typedefs to be used anywhere in GCC.
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case $output in
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*config.h | *hconfig.h | *tconfig.h)
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echo "#ifdef IN_GCC"
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echo "/* Provide three core typedefs used by everything, if we are compiling"
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echo " GCC. These used to be found in rtl.h and tree.h, but this is no"
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echo " longer practical. Providing these here rather that system.h allows"
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echo " the typedefs to be used everywhere within GCC. */"
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echo "struct rtx_def;"
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echo "typedef struct rtx_def *rtx;"
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echo "struct rtvec_def;"
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echo "typedef struct rtvec_def *rtvec;"
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echo "union tree_node;"
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echo "typedef union tree_node *tree;"
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echo "#endif"
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;;
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esac
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if [ -n "$HEADERS" ]; then
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echo '#ifdef IN_GCC'
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for file in $HEADERS; do
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echo "# include \"$file\""
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done
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echo '#endif'
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fi
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for def in $DEFINES; do
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echo "#ifndef $def" | sed 's/=.*//'
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echo "# define $def" | sed 's/=/ /'
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echo "#endif"
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done
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# If this is tm_p.h, include tm-preds.h unconditionally.
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# If this is tconfig.h or hconfig.h, include no more files.
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# Otherwise, include insn-constants.h and insn-flags.h,
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# but only if GENERATOR_FILE is not defined.
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case $output in
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*tm_p.h)
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echo "#include \"tm-preds.h\""
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;;
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*tconfig.h | *hconfig.h)
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;;
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*)
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echo "#ifndef GENERATOR_FILE"
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echo "# include \"insn-constants.h\""
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echo "# include \"insn-flags.h\""
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echo "#endif"
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;;
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esac
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# Prevent obstack.c from thinking it can do i18n of its error message
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# when it's being linked against a build-side program.
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echo '#ifdef GENERATOR_FILE'
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echo '# undef ENABLE_NLS'
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echo '#endif'
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) > $output.T
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# Avoid changing the actual file if possible.
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if [ -f $output ] && cmp $output.T $output >/dev/null 2>&1; then
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echo $output is unchanged >&2
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rm -f $output.T
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else
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mv -f $output.T $output
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fi
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# Touch a stamp file for Make's benefit.
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rm -f cs-$output
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echo timestamp > cs-$output
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