cannot find autoconf. please check your autoconf installation Xampp in CentOS
Solution 1:
MAC Users
You can do it easily using brew.
brew install autoconf
Solution 2:
I got here looking for an answer for docker when using Alpine linux this worked for me (I tried @Dimitros solution but did not work):
RUN apk --no-cache add pcre-dev ${PHPIZE_DEPS} \
&& pecl install xdebug \
&& docker-php-ext-enable xdebug \
&& apk del pcre-dev ${PHPIZE_DEPS}