{"id":4263,"date":"2026-02-09T09:34:07","date_gmt":"2026-02-09T09:34:07","guid":{"rendered":"https:\/\/www.devopsconsulting.in\/blog\/?p=4263"},"modified":"2026-02-09T09:34:08","modified_gmt":"2026-02-09T09:34:08","slug":"install-and-enable-the-gmp-extension-in-linux","status":"publish","type":"post","link":"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/","title":{"rendered":"Install, and enable the GMP extension in linux"},"content":{"rendered":"\n

since you are using XAMPP PHP located at \/opt\/lampp\/bin\/php<\/code> (version 8.2.12)<\/strong>, you must build, install, and enable the GMP extension for this exact PHP version<\/strong>.
Follow these steps carefully.<\/p>\n\n\n\n

\n\n\n\n

ONE-COMMAND GMP INSTALL (XAMPP PHP 8.2.12)<\/h2>\n\n\n\n
sudo apt update && \\\nsudo apt install -y build-essential autoconf automake libtool pkg-config libgmp-dev re2c bison wget && \\\ncd \/tmp && \\\nwget -q https:\/\/www.php.net\/distributions\/php-8.2.12.tar.gz && \\\ntar -xzf php-8.2.12.tar.gz && \\\ncd php-8.2.12\/ext\/gmp && \\\n\/opt\/lampp\/bin\/phpize && \\\n.\/configure --with-php-config=\/opt\/lampp\/bin\/php-config && \\\nmake -j\"$(nproc)\" && \\\nsudo make install && \\\ngrep -q '^extension=gmp.so' \/opt\/lampp\/etc\/php.ini || echo 'extension=gmp.so' | sudo tee -a \/opt\/lampp\/etc\/php.ini && \\\nsudo \/opt\/lampp\/lampp restart && \\\n\/opt\/lampp\/bin\/php -m | grep -i gmp && \\\n\/opt\/lampp\/bin\/php -r 'echo function_exists(\"gmp_init\") ? \"GMP OK\\n\" : \"GMP NOT OK\\n\";'\n<\/code><\/pre>\n\n\n\n
Step 0: Check your XAMPP PHP version<\/h2>\n\n\n\n
Run this command to confirm the PHP version you are using:<\/p>\n\n\n\n
\/opt\/lampp\/bin\/php -v\n<\/code><\/pre>\n\n\n\n
You should see PHP 8.2.12<\/strong>.<\/p>\n\n\n\n
\n\n\n\n
Step 1: Install required build packages (Ubuntu\/Debian)<\/h2>\n\n\n\n
These packages are required to compile the GMP extension.<\/p>\n\n\n\n
sudo apt update\nsudo apt install -y build-essential autoconf automake libtool pkg-config libgmp-dev re2c bison\n<\/code><\/pre>\n\n\n\n
\u26a0\ufe0f Important:<\/strong>
libgmp-dev<\/code> is mandatory. Without it, GMP will not compile.<\/p>\n\n\n\n
\n\n\n\n
Step 2: Download PHP source code (same version: 8.2.12)<\/h2>\n\n\n\n
cd \/tmp\nwget https:\/\/www.php.net\/distributions\/php-8.2.12.tar.gz\ntar -xzf php-8.2.12.tar.gz\n<\/code><\/pre>\n\n\n\n
This gives you the PHP source files needed to compile extensions.<\/p>\n\n\n\n
\n\n\n\n
Step 3: Compile GMP extension using XAMPP PHP<\/h2>\n\n\n\n
Go to the GMP extension directory:<\/p>\n\n\n\n
cd \/tmp\/php-8.2.12\/ext\/gmp\n<\/code><\/pre>\n\n\n\n
Now run these commands using XAMPP\u2019s phpize and php-config<\/strong>:<\/p>\n\n\n\n
\/opt\/lampp\/bin\/phpize\n.\/configure --with-php-config=\/opt\/lampp\/bin\/php-config\nmake -j\"$(nproc)\"\nsudo make install\n<\/code><\/pre>\n\n\n\n
\u2705 After this, the file gmp.so<\/code><\/strong> will be installed in XAMPP\u2019s PHP extension directory.<\/p>\n\n\n\n
\n\n\n\n
Step 4: Confirm gmp.so<\/code> is installed<\/h2>\n\n\n\n
Run:<\/p>\n\n\n\n
EXT_DIR=$(\/opt\/lampp\/bin\/php -r 'echo ini_get(\"extension_dir\");')\necho \"EXT_DIR=$EXT_DIR\"\nls -l \"$EXT_DIR\" | grep -i gmp\n<\/code><\/pre>\n\n\n\n
Expected result:
You should see gmp.so<\/code><\/strong> listed.<\/p>\n\n\n\n
\n\n\n\n
Step 5: Enable GMP in XAMPP php.ini<\/h2>\n\n\n\n
Open the XAMPP PHP configuration file:<\/p>\n\n\n\n
\/opt\/lampp\/etc\/php.ini\n<\/code><\/pre>\n\n\n\n
Edit it:<\/p>\n\n\n\n
sudo vi \/opt\/lampp\/etc\/php.ini\n<\/code><\/pre>\n\n\n\n
Search for GMP:<\/p>\n\n\n\n
    \n
  • Press \/gmp<\/code> and hit Enter<\/li>\n<\/ul>\n\n\n\n
    Make sure this line exists exactly like this<\/strong>:<\/p>\n\n\n\n
    extension=gmp.so\n<\/code><\/pre>\n\n\n\n
    \u26a0\ufe0f If you see:<\/p>\n\n\n\n
    extension=gmp\n<\/code><\/pre>\n\n\n\n
    Change it to:<\/p>\n\n\n\n
    extension=gmp.so\n<\/code><\/pre>\n\n\n\n
    Save and exit:<\/p>\n\n\n\n
      \n
    • Type :wq<\/code> and press Enter<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      Step 6: Restart XAMPP<\/h2>\n\n\n\n
      sudo \/opt\/lampp\/lampp restart\n<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      Step 7: Verify GMP is enabled<\/h2>\n\n\n\n
      Check loaded PHP modules:<\/p>\n\n\n\n
      \/opt\/lampp\/bin\/php -m | grep -i gmp\n<\/code><\/pre>\n\n\n\n
      Expected output:<\/p>\n\n\n\n
      gmp\n<\/code><\/pre>\n\n\n\n
      Extra check:<\/p>\n\n\n\n
      \/opt\/lampp\/bin\/php -r 'echo function_exists(\"gmp_init\") ? \"GMP OK\\n\" : \"GMP NOT OK\\n\";'\n<\/code><\/pre>\n\n\n\n
      Expected output:<\/p>\n\n\n\n
      GMP OK\n<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      If you get an error in Step 3<\/h2>\n\n\n\n
      Run these commands and share the error output:<\/p>\n\n\n\n
      \/opt\/lampp\/bin\/phpize -v\n\/opt\/lampp\/bin\/php-config --version\n<\/code><\/pre>\n\n\n\n
      Also copy and paste any error messages from:<\/p>\n\n\n\n
        \n
      • .\/configure<\/code><\/li>\n\n\n\n
      • make<\/code><\/li>\n<\/ul>\n\n\n\n
        ONE-COMMAND GMP INSTALL (XAMPP PHP 8.2.12)<\/h2>\n\n\n\n
        sudo apt update && \\\nsudo apt install -y build-essential autoconf automake libtool pkg-config libgmp-dev re2c bison wget && \\\ncd \/tmp && \\\nwget -q https:\/\/www.php.net\/distributions\/php-8.2.12.tar.gz && \\\ntar -xzf php-8.2.12.tar.gz && \\\ncd php-8.2.12\/ext\/gmp && \\\n\/opt\/lampp\/bin\/phpize && \\\n.\/configure --with-php-config=\/opt\/lampp\/bin\/php-config && \\\nmake -j\"$(nproc)\" && \\\nsudo make install && \\\ngrep -q '^extension=gmp.so' \/opt\/lampp\/etc\/php.ini || echo 'extension=gmp.so' | sudo tee -a \/opt\/lampp\/etc\/php.ini && \\\nsudo \/opt\/lampp\/lampp restart && \\\n\/opt\/lampp\/bin\/php -m | grep -i gmp && \\\n\/opt\/lampp\/bin\/php -r 'echo function_exists(\"gmp_init\") ? \"GMP OK\\n\" : \"GMP NOT OK\\n\";'\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
        since you are using XAMPP PHP located at \/opt\/lampp\/bin\/php (version 8.2.12), you must build, install, and enable the GMP extension […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4263","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nInstall, and enable the GMP extension in linux - DevOps Consulting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Install, and enable the GMP extension in linux - DevOps Consulting\" \/>\n<meta property=\"og:description\" content=\"since you are using XAMPP PHP located at \/opt\/lampp\/bin\/php (version 8.2.12), you must build, install, and enable the GMP extension […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/\" \/>\n<meta property=\"og:site_name\" content=\"DevOps Consulting\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-09T09:34:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-09T09:34:08+00:00\" \/>\n<meta name=\"author\" content=\"Abhishek Singh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Abhishek Singh\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/\",\"url\":\"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/\",\"name\":\"Install, and enable the GMP extension in linux - DevOps Consulting\",\"isPartOf\":{\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/#website\"},\"datePublished\":\"2026-02-09T09:34:07+00:00\",\"dateModified\":\"2026-02-09T09:34:08+00:00\",\"author\":{\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/#\/schema\/person\/fc397ba8be42f9fdd53450edfc73006f\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.devopsconsulting.in\/blog\/install-and-enable-the-gmp-extension-in-linux\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/#website\",\"url\":\"https:\/\/www.devopsconsulting.in\/blog\/\",\"name\":\"DevOps Consulting\",\"description\":\"DevOps Consulting | SRE Consulting | DevSecOps Consulting | MLOps Consulting\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.devopsconsulting.in\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/#\/schema\/person\/fc397ba8be42f9fdd53450edfc73006f\",\"name\":\"Abhishek Singh\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.devopsconsulting.in\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/790feefe779852cdf344ca7318bf6c13832223c9b3c6bf4d217658412041026d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/790feefe779852cdf344ca7318bf6c13832223c9b3c6bf4d217658412041026d?s=96&d=mm&r=g\",\"caption\":\"Abhishek Singh\"},\"description\":\"I\u2019m Abhishek, a DevOps, SRE, DevSecOps, and Cloud expert with a passion for sharing knowledge and real-world experiences. 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