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| author | Dmitry V. Levin <ldv@altlinux.org> | 2020-08-06 18:00:00 +0000 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2020-08-07 08:00:00 +0000 |
| commit | 84726f58785a22847cb67c2e009b5be0e207a256 (patch) | |
| tree | 4d2b87abc2c127f6fe01d75a1074c01df5c8fbe8 /m4/japhar_grep_cflags.m4 | |
| parent | 650273e77b643f14d937f26f8b628481a4b4b56a (diff) | |
m4: rewrite __attribute__((unused)) check
Rewrite using AC_CACHE_CHECK to create a more readable autoconf macro.
* m4/attribute.m4: New file.
* m4/japhar_grep_cflags.m4: Remove.
* m4/.gitignore: Replace japhar_grep_cflags.m4 with attribute.m4.
* configure.ac: Replace AC_C___ATTRIBUTE__ with PAM_ATTRIBUTE_UNUSED.
Diffstat (limited to 'm4/japhar_grep_cflags.m4')
| -rw-r--r-- | m4/japhar_grep_cflags.m4 | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/m4/japhar_grep_cflags.m4 b/m4/japhar_grep_cflags.m4 deleted file mode 100644 index 4e8c4598..00000000 --- a/m4/japhar_grep_cflags.m4 +++ /dev/null @@ -1,32 +0,0 @@ -dnl -dnl Test for __attribute__ ((unused)) -dnl Based on code from the tcpdump version 3.7.2 source. -dnl - -AC_DEFUN([AC_C___ATTRIBUTE__], [ -AC_MSG_CHECKING(for __attribute__) -AC_CACHE_VAL(ac_cv___attribute__, [ -AC_COMPILE_IFELSE([ -AC_LANG_PROGRAM([[ -#include <stdlib.h> -static void foo (void) __attribute__ ((unused)); - -static void -foo (void) -{ - exit(1); -} -]], -[[ - exit (0); -]])], -[ac_cv___attribute__=yes], -[ac_cv___attribute__=no])]) -if test "$ac_cv___attribute__" = "yes"; then - AC_DEFINE(UNUSED, __attribute__ ((unused)), [define if your compiler has __att -ribute__ ((unused))]) -else - AC_DEFINE(UNUSED,,) -fi -AC_MSG_RESULT($ac_cv___attribute__) -]) |