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990c91f2a7
GIMP_DETECT_CFLAGS: pass -Werror to the compiler when checking for flags, so the macro fails if passing a flag only warns but doesn't cause the compiler to fail. Before, the compiler would warn about the flag for each file compiled.
20 lines
523 B
Text
20 lines
523 B
Text
dnl GIMP_DETECT_CFLAGS(RESULT, FLAGSET)
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dnl Detect if the compiler supports a set of flags
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AC_DEFUN([GIMP_DETECT_CFLAGS],
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[
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$1=
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for flag in $2; do
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if test -z "[$]$1"; then
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$1_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror $flag"
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AC_MSG_CHECKING([whether [$]CC understands [$]flag])
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AC_TRY_COMPILE([], [], [$1_works=yes], [$1_works=no])
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AC_MSG_RESULT([$]$1_works)
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CFLAGS="[$]$1_save_CFLAGS"
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if test "x[$]$1_works" = "xyes"; then
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$1="$flag"
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fi
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fi
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done
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])
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