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build: Automatically determine libgcrypt's file name.

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* m4/guix.m4 (GUIX_LIBGCRYPT_LIBDIR): New macro.
* configure.ac: Use it when no --with-libgcrypt-* option was passed.
* README: Do not recommend --with-libgcrypt-prefix.

Co-authored-by: 宋文武 <iyzsong@gmail.com>
This commit is contained in:
Ludovic Courtès 2015-10-06 22:09:40 +02:00
parent 04d1ab3bf5
commit dd01fecd23
3 changed files with 32 additions and 15 deletions
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15
m4/guix.m4
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@ -270,3 +270,18 @@ AC_DEFUN([GUIX_CHECK_LIBC_MOUNT], [
guix_cv_libc_has_mount="no"
fi])
])
dnl GUIX_LIBGCRYPT_LIBDIR VAR
dnl
dnl Attempt to determine libgcrypt's LIBDIR; store the result in VAR.
AC_DEFUN([GUIX_LIBGCRYPT_LIBDIR], [
AC_PATH_PROG([LIBGCRYPT_CONFIG], [libgcrypt-config])
AC_CACHE_CHECK([libgcrypt's library directory],
[guix_cv_libgcrypt_libdir],
[if test "x$LIBGCRYPT_CONFIG" != "x"; then
guix_cv_libgcrypt_libdir=`$LIBGCRYPT_CONFIG --libs | sed -e "s/.*-L\([[^ ]]\+\)[[[:blank:]]]\+-lgcrypt.*/\1/g"`
else
guix_cv_libgcrypt_libdir=""
fi])
$1="$guix_cv_libgcrypt_libdir"
])