68 lines
2 KiB
Text
68 lines
2 KiB
Text
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. ./redoconf.rc
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rc_include
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rc_helpmsg ARCH "Architecture prefix for output (eg. i686-w64-mingw32-)"
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rc_helpmsg CC "C compiler name (cc)"
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rc_helpmsg CPPFLAGS "Extra C preprocessor flags (eg. -I... -D...)"
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rc_helpmsg CFLAGS "Extra C compiler flags (eg. -O2 -g)"
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rc_helpmsg OPTFLAGS "C/C++ compiler flag overrides (eg. -g0)"
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rc_helpmsg LINK "Linker name (cc)"
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rc_helpmsg LDFLAGS "Extra linker options (eg. -s -static)"
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rc_helpmsg LIBS "Extra libraries to always link against (eg. -lsocket)"
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rc_helpmsg STATIC "Link libraries and binaries statically"
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if [ -n "$CC" ]; then
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set -- "$CC"
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else
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if [ -n "$ARCH" ] && [ "$ARCH" = "${ARCH%-}" ]; then
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# Make sure arch name includes trailing dash if nonempty
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ARCH="$ARCH-"
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fi
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set -- \
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"${ARCH}cc" "${ARCH}gcc" \
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"${ARCH}clang" "/usr/bin/${ARCH}clang"-[0-9]* \
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"${ARCH}c++" "${ARCH}g++" \
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"${ARCH}clang++" "/usr/bin/${ARCH}clang++"-[0-9]*
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fi
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rc_appendln CPPFLAGS "-I."
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[ -n "$STATIC" ] && rc_appendln LDFLAGS "-static"
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for d in "$@"; do
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echo "Trying C compiler: '$d'" >&2
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if CC="$d" CXX="" LINK="$d" rc_compile cc link 'extern int i;'; then
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rc_replaceln CC "$d"
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rc_replaceln LINK "$d"
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# mingw32 (not mingw64) generates binaries that need
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# a dynamic libgcc at runtime for certain operations
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# (like 64-bit integer division), which is non-obvious.
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# Include it statically if possible, but only on Windows,
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# which we'll detect by whether windows.h exists.
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#
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# If adding the option fails, maybe it's some
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# compiler other than gcc, so that's fine.
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x="-static-libgcc$NL-static-libstdc++"
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appendln LDFLAGS "$x"
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prog='#include <windows.h>'
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if CC="$d" LINK="$d" rc_compile cc link "$prog"; then
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rc_appendln LDFLAGS "$x"
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fi
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# Set ARCH= to the right compiler prefix, either empty
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# (use native compiler) or something like "i686-w64-mingw32-"
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# (terminating dash), based on the compiler name.
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x="-${CC##*/}"
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x="${x%-*}"
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x="${x#-}"
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[ -n "$x" ] && x="$x-"
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rc_replaceln ARCH "$x"
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rc_save
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exit 0
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fi
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done
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echo "Can't find a working C compiler." >&2
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rc_undo
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exit 1
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