Hello, I'm trying to compile PHP5 with curl enabled from Admin web console but I cannot get it work. Here is config: Code: --with-mysqli --with-zlib --with-gd --enable-shmop --enable-track-vars --enable-sockets --enable-sysvsem --enable-sysvshm --enable-magic-quotes --enable-mbstring --with-iconv--with-libxml-dir=/usr/lib/ --with-xml2 --with-curl Here is the part of config.log Code: .... configure:32740: checking whether to enable calendar conversion support configure:32778: result: no configure:33078: checking whether to enable ctype functions configure:33116: result: yes configure:33416: checking for cURL support configure:33455: result: yes configure:33464: checking if we should use cURL for url streams configure:33482: result: no configure:33492: checking for cURL in default path configure:33497: result: found in /usr configure:33515: checking for cURL 7.10.5 or greater configure:33529: result: libcurl 7.15.5 configure:33538: checking for SSL support in libcurl configure:33542: result: yes configure:33560: checking how to run the C preprocessor configure:33678: result: gcc -E configure:33702: gcc -E conftest.c configure:33708: $? = 0 configure:33740: gcc -E conftest.c conftest.c:201:28: error: ac_nonexistent.h: No such file or directory configure:33746: $? = 1 configure: failed program was: | /* confdefs.h. */ | | #define PACKAGE_NAME "" | #define PACKAGE_TARNAME "" | #define PACKAGE_VERSION "" | #define PACKAGE_STRING "" ... As you can see it shows "ac_nonexistent.h: No such file or directory" I installed both gcc and gcc-c++ libraries but it doesn't work. PHP version is 5.2.6 and OS is CentOS 5 64bit Can you please help me with this ? Thank you.