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| author | Xi Ruoyao <xry111@xry111.site> | 2022-06-25 18:58:53 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-06-25 06:58:53 -0400 |
| commit | 280fe78d37f58927b280e2e316a2ae19201f2b83 (patch) | |
| tree | 6fcd94b33cd5674cb99412977a59794ba0bbc9a8 /configure.ac | |
| parent | 1f14b3fa92d4442a60233e9596ddec428a985e3c (diff) | |
| download | libffi-280fe78d37f58927b280e2e316a2ae19201f2b83.tar.gz | |
configure.ac: use grep -E instead of egrep if possible (#720)
Upstream will start to emit a warning if egrep is invoked in the next
grep release. Stop invoking it explicitly. Use AC_PROG_EGREP to try
"grep -E" first, and fallback to egrep if "grep -E" does not work. We
need this fallback for some non-GNU grep implementations (like Solaris).
Url: https://git.savannah.gnu.org/cgit/grep.git/commit/?id=a951562
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 70f6d2c..8feb248 100644 --- a/configure.ac +++ b/configure.ac @@ -38,6 +38,7 @@ AC_SUBST(CFLAGS) AM_PROG_AS AM_PROG_CC_C_O +AC_PROG_EGREP AC_PROG_LIBTOOL AC_CONFIG_MACRO_DIR([m4]) @@ -294,7 +295,7 @@ if test "x$GCC" = "xyes"; then echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c libffi_cv_hidden_visibility_attribute=no if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then - if egrep '(\.hidden|\.private_extern).*foo' conftest.s >/dev/null; then + if $EGREP '(\.hidden|\.private_extern).*foo' conftest.s >/dev/null; then libffi_cv_hidden_visibility_attribute=yes fi fi |