Re: Cache variable name for AC_CHECK_LIBS
Paul Eggert <[email protected]>
| Newsgroups | gmane.comp.sysutils.autoconf.bugs |
|---|---|
| Organization | UCLA Computer Science Department |
| Message-ID | <[email protected]> |
On 11/27/19 3:27 AM, Bert Wesarg wrote: > No reaction since 3.5 years. Bug still persists. It was a confusing bug report, as there is no AC_CHECK_LIBS macro in Autoconf. But I think I found the bug that you were thinking of, and fixed it by installing the attached.
0001-Fix-AC_CHECK_LIB-quoting-bug.patch
(text/x-patch, 1.6 KB)
From c998ae7ca5f59780f8029abdd6bf40c6581c7e49 Mon Sep 17 00:00:00 2001 From: Paul Eggert <[email protected]> Date: Thu, 2 Jul 2020 22:23:59 -0700 Subject: [PATCH] Fix AC_CHECK_LIB quoting bug Problem reported by Bert Wesarg in: https://lists.gnu.org/archive/html/autoconf/2016-04/msg00020.html * lib/autoconf/libs.m4 (AC_CHECK_LIB): Fix quoting bug. * tests/semantics.at (AC_CHECK_LIB): Add a test for the bug. --- lib/autoconf/libs.m4 | 2 +- tests/semantics.at | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/autoconf/libs.m4 b/lib/autoconf/libs.m4 index f5828e40..becb2231 100644 --- a/lib/autoconf/libs.m4 +++ b/lib/autoconf/libs.m4 @@ -101,7 +101,7 @@ AC_DEFUN([AC_CHECK_LIB], [m4_ifval([$3], , [AH_CHECK_LIB([$1])])dnl AS_LITERAL_WORD_IF([$1], [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])], - [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1''_$2])])dnl + [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1""_$2])])dnl AC_CACHE_CHECK([for $2 in -l$1], [ac_Lib], [ac_check_lib_save_LIBS=$LIBS LIBS="-l$1 $5 $LIBS" diff --git a/tests/semantics.at b/tests/semantics.at index 3324a230..f10a0b53 100644 --- a/tests/semantics.at +++ b/tests/semantics.at @@ -42,9 +42,13 @@ ac_sin=sin AC_CHECK_LIB(m, $ac_sin,, [AC_MSG_ERROR([cannot find `\$ac_sin' (= `$ac_sin') in `libm'])]) +AS_UNSET([ac_cv_lib_m_acos]) ac_m=m AC_CHECK_LIB($ac_m, acos,, [AC_MSG_ERROR([cannot find `acos' in `\$ac_m' (= `$ac_m')])]) +if test "${ac_cv_lib_m_acos+set}" != set; then + AC_MSG_ERROR([ac_cv_lib_m_acos not set]) +fi ac_asin=asin AC_CHECK_LIB($ac_m, $ac_asin,, -- 2.17.1