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autoconf: Remove use of m4_ifblank.

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The m4_ifblank macro is not available on CentOS 6, reverse conditionals
to allow use of m4_ifval instead.  ./bootstrap.sh was run but this patch
does not result in any difference to the generated configure script.

Change-Id: I280785deb872ed8d3339d99cce63a2b54d5f1438
This commit is contained in:
Corey Farrell
2017-12-02 16:55:31 -05:00
parent 075faac2fd
commit 39939cecfa
3 changed files with 13 additions and 13 deletions
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6
autoconf/ast_gcc_attribute.m4
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@@ -11,9 +11,9 @@ ax_cv_have_func_attribute_$1=0
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
m4_ifblank([$2],
[$3 void __attribute__(($1)) *test(void *muffin, ...) {return (void *) 0;}],
[$3 void __attribute__(($2)) *test(void *muffin, ...) ;]))],
m4_ifval([$2],
[$3 void __attribute__(($2)) *test(void *muffin, ...) ;],
[$3 void __attribute__(($1)) *test(void *muffin, ...) {return (void *) 0;}]))],
AC_MSG_RESULT(yes)
m4_ifval([$4],$4=1)
ax_cv_have_func_attribute_$1=1