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annotate m4/warnings.m4 @ 14751:fce34e91a9ce
warnings.m4: don't usurp save_CPPFLAGS variable name
* m4/warnings.m4: Prefix local temporary variable name with gl_.
| author | Jim Meyering <meyering@redhat.com> |
|---|---|
| date | Tue, 17 May 2011 14:10:16 +0200 |
| parents | 97fc9a21a8fb |
| children | d569119b11e7 |
| rev | line source |
|---|---|
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14751
fce34e91a9ce
warnings.m4: don't usurp save_CPPFLAGS variable name
Jim Meyering <meyering@redhat.com>
parents:
14079
diff
changeset
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1 # warnings.m4 serial 3 |
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maint: update almost all copyright ranges to include 2011
Jim Meyering <meyering@redhat.com>
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2 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc. |
| 10789 | 3 dnl This file is free software; the Free Software Foundation |
| 4 dnl gives unlimited permission to copy and/or distribute it, | |
| 5 dnl with or without modifications, as long as this notice is preserved. | |
| 6 | |
| 7 dnl From Simon Josefsson | |
| 8 | |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
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9 # gl_AS_VAR_APPEND(VAR, VALUE) |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
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10 # ---------------------------- |
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Paolo Bonzini <bonzini@gnu.org>
parents:
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11 # Provide the functionality of AS_VAR_APPEND if Autoconf does not have it. |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
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12 m4_ifdef([AS_VAR_APPEND], |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
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13 [m4_copy([AS_VAR_APPEND], [gl_AS_VAR_APPEND])], |
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Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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14 [m4_define([gl_AS_VAR_APPEND], |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
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15 [AS_VAR_SET([$1], [AS_VAR_GET([$1])$2])])]) |
| 10789 | 16 |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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17 # gl_WARN_ADD(PARAMETER, [VARIABLE = WARN_CFLAGS]) |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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18 # ------------------------------------------------ |
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Paolo Bonzini <bonzini@gnu.org>
parents:
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19 # Adds parameter to WARN_CFLAGS if the compiler supports it. For example, |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
diff
changeset
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20 # gl_WARN_ADD([-Wparentheses]). |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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21 AC_DEFUN([gl_WARN_ADD], |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
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22 [AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_$1])dnl |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
diff
changeset
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23 AC_CACHE_CHECK([whether compiler handles $1], [gl_Warn], [ |
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14751
fce34e91a9ce
warnings.m4: don't usurp save_CPPFLAGS variable name
Jim Meyering <meyering@redhat.com>
parents:
14079
diff
changeset
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24 gl_save_CPPFLAGS="$CPPFLAGS" |
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warnings: Use CPPFLAGS to really check whether the parameter works.
Simon Josefsson <simon@josefsson.org>
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25 CPPFLAGS="${CPPFLAGS} $1" |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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26 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([])], |
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Paolo Bonzini <bonzini@gnu.org>
parents:
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27 [AS_VAR_SET([gl_Warn], [yes])], |
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Bruno Haible <bruno@clisp.org>
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28 [AS_VAR_SET([gl_Warn], [no])]) |
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14751
fce34e91a9ce
warnings.m4: don't usurp save_CPPFLAGS variable name
Jim Meyering <meyering@redhat.com>
parents:
14079
diff
changeset
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29 CPPFLAGS="$gl_save_CPPFLAGS" |
| 10789 | 30 ]) |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
diff
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31 AS_VAR_PUSHDEF([gl_Flags], m4_if([$2], [], [[WARN_CFLAGS]], [[$2]]))dnl |
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build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
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32 AS_VAR_IF([gl_Warn], [yes], [gl_AS_VAR_APPEND([gl_Flags], [" $1"])]) |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
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33 AS_VAR_POPDEF([gl_Flags])dnl |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
diff
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34 AS_VAR_POPDEF([gl_Warn])dnl |
| 10793 | 35 m4_ifval([$2], [AS_LITERAL_IF([$2], [AC_SUBST([$2])], [])])dnl |
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warnings: Support non-literal arguments, and let the user choose the variable
Paolo Bonzini <bonzini@gnu.org>
parents:
10789
diff
changeset
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36 ]) |