30 lines
922 B
Plaintext
30 lines
922 B
Plaintext
dnl Copyright (C) 2008 Kim Woelders
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dnl This code is public domain and can be freely used or copied.
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dnl Macro to set compiler warning flags
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dnl Provides configure argument --enable-werror to stop compilation on warnings
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dnl Usage: AC_C_WARNFLAGS([LANG])
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dnl Set LANG to 'cpp' when compiling for C++
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AC_DEFUN([AC_C_WARNFLAGS], [
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define(ac_c_compile_cpp, ifelse([$1], [cpp], [yes], [no]))
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AC_ARG_ENABLE(werror,
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[ --enable-werror treat compiler warnings as errors @<:@default=no@:>@],,
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enable_werror=no)
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if test "x$GCC" = "xyes"; then
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CWARNFLAGS="-W -Wall -Waggregate-return -Wcast-align -Wpointer-arith -Wshadow -Wwrite-strings"
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ifelse(ac_c_compile_cpp, no, [
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CWARNFLAGS="$CWARNFLAGS -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes"
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],)
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if test "x$enable_werror" = "xyes"; then
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CWARNFLAGS="$CWARNFLAGS -Werror"
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fi
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fi
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AC_SUBST(CWARNFLAGS)
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])
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