i passed my day to fix this error and i think it's time to ask a question!
so i got this error when i try to install the Oauth PHP module with
sudo pecl install oauth
configure: error: Couldn't find pcre.h, try installing the libpcre development/headers package
I've installed pcre with Brew cause i'm on Mac Os 10.11.6
Pcre is correctly installed :
iLolo:oauth-2.0.2 do_f$ brew install pcre
Warning: pcre-8.39 already installed
PHP Version :
iLolo:oauth-2.0.2 do_f$ php -v
PHP 7.0.8 (cli) (built: Jun 26 2016 12:30:44) ( NTS )
Here there is the locate pcre.h command
iLolo:~ do_f$ locate pcre.h
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/php/ext/pcre/php_pcre.h
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift-migrator/sdk/MacOSX.sdk/usr/include/php/ext/pcre/php_pcre.h
/usr/local/Cellar/pcre/8.39/include/pcre.h
/usr/local/Cellar/pcre/8.39/share/doc/pcre/html/pcre.html
/usr/local/include/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/ext/pcre/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/ext/pcre/pcrelib/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/ext/pcre/pcrelib/pcre.h.back
/usr/local/php5-7.0.8-20160626-123411/include/php/ext/pcre/php_pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/ext/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/include/pcre.h
/usr/local/php5-7.0.8-20160626-123411/include/php/pcre.h
iLolo:~ do_f$
So i've find a "solution", i've edit the configure inside the src dir oauth-2.0.2
#ac_fn_c_check_header_mongrel "$LINENO" "pcre.h" "ac_cv_header_pcre_h" "$ac_includes_default"
#if test "x$ac_cv_header_pcre_h" = xyes; then :
#else # as_fn_error $? "Couldn't find pcre.h, try installing the libpcre development/headers package" "$LINENO" 5
#fi
then i've do ./configure make make test make install and i add extension=oauth.so in the php.ini