bash: pacman: command not found
ChatGPT said:
なるほど、そのメッセージは**MSYS2のMINGW64ではなく、単体のGit Bash（MINGW64）**を使っていることを示しています。
Git Bash の MINGW64 環境は 名前に「MINGW64」と付いていても、MSYS2 とは別物であり、pacman などのパッケージマネージャーは含まれていません。
✅ 何が起きているかまとめ
- ❌ Git BashのMINGW64 →
pacmanや開発用ライブラリなし - ✅ MSYS2のMINGW64 →
pacmanやOpenGL関連ライブラリがインストール可能
🔄 解決方法：MSYS2の導入
GLSLやOpenGLを本格的に使いたい場合、MSYS2を導入するのが一番簡単かつ強力です。
1. MSYS2をダウンロード・インストール
MSYS2公式サイト からインストーラーをダウンロードしてインストールします。
MSYS2 は「Windows 向けソフトウェア配布および構築プラットフォーム」です。
しょぼいウィルスソフトが反応する可能性があるので切っておく
- プロジェクトのコンパイルを開始するには、mingw-w64 GCCなどのツールをインストールする必要があるでしょう。以下のコマンドを実行してください。
pacman -S mingw-w64-ucrt-x86_64-gcc- ターミナルウィンドウに以下の出力が表示されます。「Enter」キーを押して続行してください。
furcr@furcraea_built UCRT64 ~
$ pacman -S mingw-w64-ucrt-x86_64-gcc
resolving dependencies...
looking for conflicting packages...
Packages (16) mingw-w64-ucrt-x86_64-binutils-2.44-4
mingw-w64-ucrt-x86_64-crt-git-13.0.0.r21.gf5469ff36-1
mingw-w64-ucrt-x86_64-gcc-libs-15.1.0-5 mingw-w64-ucrt-x86_64-gettext-runtime-0.25-1
mingw-w64-ucrt-x86_64-gmp-6.3.0-2
mingw-w64-ucrt-x86_64-headers-git-13.0.0.r21.gf5469ff36-1
mingw-w64-ucrt-x86_64-isl-0.27-1 mingw-w64-ucrt-x86_64-libiconv-1.18-1
mingw-w64-ucrt-x86_64-libwinpthread-13.0.0.r21.gf5469ff36-1
mingw-w64-ucrt-x86_64-mpc-1.3.1-2 mingw-w64-ucrt-x86_64-mpfr-4.2.2-1
mingw-w64-ucrt-x86_64-windows-default-manifest-6.4-4
mingw-w64-ucrt-x86_64-winpthreads-13.0.0.r21.gf5469ff36-1
mingw-w64-ucrt-x86_64-zlib-1.3.1-1 mingw-w64-ucrt-x86_64-zstd-1.5.7-1
mingw-w64-ucrt-x86_64-gcc-15.1.0-5
Total Download Size: 69.02 MiB
Total Installed Size: 540.65 MiB
:: Proceed with installation? [Y/n]
:: Retrieving packages...
mingw-w64-ucrt-x86_64-crt-... 4.6 MiB 1740 KiB/s 00:03 [###############################] 100%
mingw-w64-ucrt-x86_64-isl-... 1453.5 KiB 502 KiB/s 00:03 [###############################] 100%
mingw-w64-ucrt-x86_64-binu... 6.0 MiB 1980 KiB/s 00:03 [###############################] 100%
mingw-w64-ucrt-x86_64-gcc-... 1043.5 KiB 2.24 MiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-libi... 725.4 KiB 1656 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-head... 6.4 MiB 1811 KiB/s 00:04 [###############################] 100%
mingw-w64-ucrt-x86_64-gmp-... 578.5 KiB 1297 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-mpfr... 541.9 KiB 1234 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-gett... 333.5 KiB 836 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-gcc-... 46.6 MiB 11.1 MiB/s 00:04 [###############################] 100%
mingw-w64-ucrt-x86_64-zstd... 642.3 KiB 605 KiB/s 00:01 [###############################] 100%
mingw-w64-ucrt-x86_64-mpc-... 128.3 KiB 276 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-zlib... 92.1 KiB 242 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-winp... 41.8 KiB 109 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-libw... 29.5 KiB 79.2 KiB/s 00:00 [###############################] 100%
mingw-w64-ucrt-x86_64-wind... 3.0 KiB 5.10 KiB/s 00:01 [###############################] 100%
Total (16/16) 69.0 MiB 12.9 MiB/s 00:05 [###############################] 100%
(16/16) checking keys in keyring [###############################] 100%
(16/16) checking package integrity [###############################] 100%
(16/16) loading package files [###############################] 100%
(16/16) checking for file conflicts [###############################] 100%
(16/16) checking available disk space [###############################] 100%
:: Processing package changes...
( 1/16) installing mingw-w64-ucrt-x86_64-libwinpthread [###############################] 100%
( 2/16) installing mingw-w64-ucrt-x86_64-gcc-libs [###############################] 100%
( 3/16) installing mingw-w64-ucrt-x86_64-libiconv [###############################] 100%
( 4/16) installing mingw-w64-ucrt-x86_64-gettext-runtime [###############################] 100%
( 5/16) installing mingw-w64-ucrt-x86_64-zlib [###############################] 100%
( 6/16) installing mingw-w64-ucrt-x86_64-zstd [###############################] 100%
( 7/16) installing mingw-w64-ucrt-x86_64-binutils [###############################] 100%
( 8/16) installing mingw-w64-ucrt-x86_64-headers-git [###############################] 100%
( 9/16) installing mingw-w64-ucrt-x86_64-crt-git [###############################] 100%
(10/16) installing mingw-w64-ucrt-x86_64-gmp [###############################] 100%
(11/16) installing mingw-w64-ucrt-x86_64-isl [###############################] 100%
(12/16) installing mingw-w64-ucrt-x86_64-mpfr [###############################] 100%
(13/16) installing mingw-w64-ucrt-x86_64-mpc [###############################] 100%
(14/16) installing mingw-w64-ucrt-x86_64-windows-default... [###############################] 100%
(15/16) installing mingw-w64-ucrt-x86_64-winpthreads [###############################] 100%
(16/16) installing mingw-w64-ucrt-x86_64-gcc [###############################] 100%
furcr@furcraea_built UCRT64 ~
$
gccこれで、Windows 用のソフトウェアをビルドするために
呼び出すことができます。
gcc --version
gcc.exe (Rev5, Built by MSYS2 project) 15.1.0
Copyright (C) 2025 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
furcr@furcraea_built UCRT64 ~
$
MSYS2 をインストールすると、 経由で自動的に更新されます。
詳細については、
更新ガイドをpacman参照してください。
2. シェルの選択（重要）
インストール後、以下のいずれかのターミナルを起動：
MSYS2 MinGW 64-bit（おすすめ）
→/mingw64/bin環境になり、pacmanも使える
開発ツールとライブラリのインストール
pacman -Syu # はじめに全体アップデート
furcr@furcraea_built MINGW64 ~
$ pacman -Syu
:: Synchronizing package databases...
clangarm64 is up to date
mingw32 is up to date
mingw64 is up to date
ucrt64 is up to date
clang64 is up to date
msys is up to date
:: Starting core system upgrade...
there is nothing to do
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...
Packages (19) curl-8.14.1-2 gcc-libs-15.1.0-2 libcurl-8.14.1-2 libffi-3.5.1-1
libhogweed-3.10.2-1 libnettle-3.10.2-1 libnghttp3-1.10.1-1 libngtcp2-1.13.0-2
libopenssl-3.5.1-1 libsqlite-3.50.2-1
mingw-w64-ucrt-x86_64-crt-git-13.0.0.r57.gc1a7f831b-1
mingw-w64-ucrt-x86_64-gcc-15.1.0-6 mingw-w64-ucrt-x86_64-gcc-libs-15.1.0-6
mingw-w64-ucrt-x86_64-gettext-runtime-0.25.1-1
mingw-w64-ucrt-x86_64-headers-git-13.0.0.r57.gc1a7f831b-1
mingw-w64-ucrt-x86_64-libwinpthread-13.0.0.r57.gc1a7f831b-1
mingw-w64-ucrt-x86_64-winpthreads-13.0.0.r57.gc1a7f831b-1 nettle-3.10.2-1
openssl-3.5.1-1
Total Download Size: 65.09 MiB
Total Installed Size: 489.36 MiB
Net Upgrade Size: 1.06 MiB
:: Proceed with installation? [Y/n]
必要なライブラリ
pacman -S mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw mingw-w64-x86_64-glew mingw-w64-x86_64-glm
furcr@furcraea_built MINGW64 ~
$ pacman -S mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw mingw-w64-x86_64-glew mingw-w64-x86_64-glm
:: There are 13 members in group mingw-w64-x86_64-toolchain:
:: Repository mingw64
1) mingw-w64-x86_64-binutils 2) mingw-w64-x86_64-crt-git 3) mingw-w64-x86_64-gcc
4) mingw-w64-x86_64-gdb 5) mingw-w64-x86_64-gdb-multiarch 6) mingw-w64-x86_64-headers-git
7) mingw-w64-x86_64-libmangle-git 8) mingw-w64-x86_64-libwinpthread 9) mingw-w64-x86_64-make
10) mingw-w64-x86_64-pkgconf 11) mingw-w64-x86_64-tools-git 12) mingw-w64-x86_64-winpthreads
13) mingw-w64-x86_64-winstorecompat-git
Enter a selection (default=all):そのまま Enter キーを押す（default=all）
resolving dependencies...
looking for conflicting packages...
Packages (43) mingw-w64-x86_64-bzip2-1.0.8-3 mingw-w64-x86_64-expat-2.7.1-2
mingw-w64-x86_64-gcc-libs-15.1.0-6 mingw-w64-x86_64-gettext-runtime-0.25.1-1
mingw-w64-x86_64-gmp-6.3.0-2 mingw-w64-x86_64-isl-0.27-1
mingw-w64-x86_64-libffi-3.5.1-1 mingw-w64-x86_64-libiconv-1.18-1
mingw-w64-x86_64-libsystre-1.0.2-1 mingw-w64-x86_64-libtre-0.9.0-1
mingw-w64-x86_64-mpc-1.3.1-2 mingw-w64-x86_64-mpdecimal-4.0.1-1
mingw-w64-x86_64-mpfr-4.2.2-1 mingw-w64-x86_64-ncurses-6.5.20241228-3
mingw-w64-x86_64-openssl-3.5.1-1 mingw-w64-x86_64-python-3.12.11-1
mingw-w64-x86_64-readline-8.2.013-1 mingw-w64-x86_64-sqlite3-3.50.2-1
mingw-w64-x86_64-tcl-8.6.16-1 mingw-w64-x86_64-termcap-1.3.1-7
mingw-w64-x86_64-tk-8.6.16-1 mingw-w64-x86_64-tzdata-2025b-2
mingw-w64-x86_64-windows-default-manifest-6.4-4 mingw-w64-x86_64-xxhash-0.8.3-1
mingw-w64-x86_64-xz-5.8.1-2 mingw-w64-x86_64-zlib-1.3.1-1
mingw-w64-x86_64-zstd-1.5.7-1 mingw-w64-x86_64-binutils-2.44-4
mingw-w64-x86_64-crt-git-13.0.0.r57.gc1a7f831b-1 mingw-w64-x86_64-gcc-15.1.0-6
mingw-w64-x86_64-gdb-16.3-1 mingw-w64-x86_64-gdb-multiarch-16.3-1
mingw-w64-x86_64-glew-2.2.0-3 mingw-w64-x86_64-glfw-3.4-1
mingw-w64-x86_64-glm-1.0.1-1 mingw-w64-x86_64-headers-git-13.0.0.r57.gc1a7f831b-1
mingw-w64-x86_64-libmangle-git-13.0.0.r57.gc1a7f831b-1
mingw-w64-x86_64-libwinpthread-13.0.0.r57.gc1a7f831b-1 mingw-w64-x86_64-make-4.4.1-3
mingw-w64-x86_64-pkgconf-1~2.5.1-1
mingw-w64-x86_64-tools-git-13.0.0.r57.gc1a7f831b-1
mingw-w64-x86_64-winpthreads-13.0.0.r57.gc1a7f831b-1
mingw-w64-x86_64-winstorecompat-git-13.0.0.r57.gc1a7f831b-1
Total Download Size: 126.25 MiB
Total Installed Size: 918.18 MiB
:: Proceed with installation? [Y/n] そのまま Enter キーを押す
:: Retrieving packages...
mingw-w64-x86_64-gdb-multi... 6.4 MiB 2.83 MiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-headers-g... 6.4 MiB 2.55 MiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-openssl-3... 7.9 MiB 3.04 MiB/s 00:03 [###############################] 100%
mingw-w64-x86_64-binutils-... 6.0 MiB 9.99 MiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-python-3.... 23.2 MiB 7.71 MiB/s 00:03 [###############################] 100%
mingw-w64-x86_64-gcc-15.1.... 46.6 MiB 14.2 MiB/s 00:03 [###############################] 100%
mingw-w64-x86_64-gdb-16.3-... 4.6 MiB 5.62 MiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-glm-1.0.1... 3.4 MiB 6.33 MiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-tcl-8.6.1... 2.7 MiB 5.43 MiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-crt-git-1... 4.5 MiB 4.20 MiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-sqlite3-3... 2.3 MiB 4.55 MiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-tk-8.6.16... 2.0 MiB 4.29 MiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-ncurses-6... 1747.4 KiB 3.53 MiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-isl-0.27-... 1456.4 KiB 2.96 MiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-gcc-libs-... 1044.6 KiB 2.11 MiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libiconv-... 726.4 KiB 1897 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-glew-2.2.... 635.3 KiB 1390 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-zstd-1.5.... 642.7 KiB 1060 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-gmp-6.3.0... 577.8 KiB 1201 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-mpfr-4.2.... 542.5 KiB 1203 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-xz-5.8.1-... 474.4 KiB 892 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-readline-... 411.7 KiB 907 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-gettext-r... 335.2 KiB 685 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-tools-git... 323.2 KiB 710 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-tzdata-20... 221.2 KiB 643 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-glfw-3.4-... 177.0 KiB 501 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-mpdecimal... 155.8 KiB 449 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-expat-2.7... 165.9 KiB 384 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-xxhash-0.... 119.2 KiB 341 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-make-4.4.... 138.5 KiB 287 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-mpc-1.3.1... 128.7 KiB 245 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-zlib-1.3.... 104.4 KiB 236 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-pkgconf-1... 100.1 KiB 212 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-bzip2-1.0... 90.9 KiB 188 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libffi-3.... 43.2 KiB 119 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libtre-0.... 79.5 KiB 165 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-winpthrea... 41.9 KiB 119 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libwinpth... 30.2 KiB 69.5 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-termcap-1... 27.3 KiB 71.6 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-winstorec... 25.0 KiB 71.4 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libmangle... 22.8 KiB 57.4 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libsystre... 9.7 KiB 27.3 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-windows-d... 3.1 KiB 5.74 KiB/s 00:01 [###############################] 100%
Total (43/43) 126.3 MiB 16.3 MiB/s 00:08 [###############################] 100%
(43/43) checking keys in keyring [###############################] 100%
(43/43) checking package integrity [###############################] 100%
(43/43) loading package files [###############################] 100%
(43/43) checking for file conflicts [###############################] 100%
(43/43) checking available disk space [###############################] 100%
:: Processing package changes...
( 1/43) installing mingw-w64-x86_64-libwinpthread [###############################] 100%
( 2/43) installing mingw-w64-x86_64-gcc-libs [###############################] 100%
( 3/43) installing mingw-w64-x86_64-libiconv [###############################] 100%
( 4/43) installing mingw-w64-x86_64-gettext-runtime [###############################] 100%
( 5/43) installing mingw-w64-x86_64-zlib [###############################] 100%
( 6/43) installing mingw-w64-x86_64-zstd [###############################] 100%
( 7/43) installing mingw-w64-x86_64-binutils [###############################] 100%
( 8/43) installing mingw-w64-x86_64-headers-git [###############################] 100%
( 9/43) installing mingw-w64-x86_64-crt-git [###############################] 100%
(10/43) installing mingw-w64-x86_64-gmp [###############################] 100%
(11/43) installing mingw-w64-x86_64-isl [###############################] 100%
(12/43) installing mingw-w64-x86_64-mpfr [###############################] 100%
(13/43) installing mingw-w64-x86_64-mpc [###############################] 100%
(14/43) installing mingw-w64-x86_64-windows-default-manifest [###############################] 100%
(15/43) installing mingw-w64-x86_64-winpthreads [###############################] 100%
(16/43) installing mingw-w64-x86_64-gcc [###############################] 100%
(17/43) installing mingw-w64-x86_64-expat [###############################] 100%
(18/43) installing mingw-w64-x86_64-libtre [###############################] 100%
(19/43) installing mingw-w64-x86_64-libsystre [###############################] 100%
(20/43) installing mingw-w64-x86_64-ncurses [###############################] 100%
(21/43) installing mingw-w64-x86_64-bzip2 [###############################] 100%
(22/43) installing mingw-w64-x86_64-libffi [###############################] 100%
(23/43) installing mingw-w64-x86_64-mpdecimal [###############################] 100%
(24/43) installing mingw-w64-x86_64-openssl [###############################] 100%
Optional dependencies for mingw-w64-x86_64-openssl
mingw-w64-x86_64-ca-certificates
(25/43) installing mingw-w64-x86_64-termcap [###############################] 100%
(26/43) installing mingw-w64-x86_64-readline [###############################] 100%
(27/43) installing mingw-w64-x86_64-sqlite3 [###############################] 100%
Optional dependencies for mingw-w64-x86_64-sqlite3
mingw-w64-x86_64-tcl: for sqlite3_analyzer [pending]
(28/43) installing mingw-w64-x86_64-tcl [###############################] 100%
(29/43) installing mingw-w64-x86_64-tk [###############################] 100%
(30/43) installing mingw-w64-x86_64-xz [###############################] 100%
(31/43) installing mingw-w64-x86_64-tzdata [###############################] 100%
(32/43) installing mingw-w64-x86_64-python [###############################] 100%
(33/43) installing mingw-w64-x86_64-xxhash [###############################] 100%
(34/43) installing mingw-w64-x86_64-gdb [###############################] 100%
Optional dependencies for mingw-w64-x86_64-gdb
mingw-w64-x86_64-python-pygments: for syntax highlighting
(35/43) installing mingw-w64-x86_64-gdb-multiarch [###############################] 100%
Optional dependencies for mingw-w64-x86_64-gdb-multiarch
mingw-w64-x86_64-python-pygments: for syntax highlighting
(36/43) installing mingw-w64-x86_64-libmangle-git [###############################] 100%
(37/43) installing mingw-w64-x86_64-make [###############################] 100%
(38/43) installing mingw-w64-x86_64-pkgconf [###############################] 100%
(39/43) installing mingw-w64-x86_64-tools-git [###############################] 100%
(40/43) installing mingw-w64-x86_64-winstorecompat-git [###############################] 100%
(41/43) installing mingw-w64-x86_64-glfw [###############################] 100%
(42/43) installing mingw-w64-x86_64-glew [###############################] 100%
(43/43) installing mingw-w64-x86_64-glm [###############################] 100%
furcr@furcraea_built MINGW64 ~
$
完了したら GLSL 含む OpenGL プログラムのビルドが可能に
プロジェクト構成
glsl_sample/
├── CMakeLists.txt
├── main.c
├── shader.vert
└── shader.frag
🔧 main.c（OpenGLでGLSL読み込んで三角形描画）
#include <stdio.h>
#include <stdlib.h>
#include <GL/glew.h>
#include <GLFW/glfw3.h>
// ファイル読み込みヘルパー
char* load_shader_source(const char* filepath) {
FILE* file = fopen(filepath, "rb");
if (!file) {
fprintf(stderr, "Failed to open %s\n", filepath);
exit(1);
}
fseek(file, 0, SEEK_END);
long len = ftell(file);
rewind(file);
char* buffer = (char*)malloc(len + 1);
fread(buffer, 1, len, file);
buffer[len] = '\0';
fclose(file);
return buffer;
}
GLuint compile_shader(GLenum type, const char* source) {
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader);
GLint success;
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
if (!success) {
char infoLog[512];
glGetShaderInfoLog(shader, 512, NULL, infoLog);
fprintf(stderr, "Shader compile error: %s\n", infoLog);
exit(1);
}
return shader;
}
int main() {
if (!glfwInit()) {
fprintf(stderr, "GLFW init failed\n");
return -1;
}
GLFWwindow* window = glfwCreateWindow(800, 600, "GLSL Sample", NULL, NULL);
if (!window) {
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glewInit();
char* vertexSource = load_shader_source("../shader.vert");
char* fragmentSource = load_shader_source("../shader.frag");
GLuint vertexShader = compile_shader(GL_VERTEX_SHADER, vertexSource);
GLuint fragmentShader = compile_shader(GL_FRAGMENT_SHADER, fragmentSource);
GLuint shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
glUseProgram(shaderProgram);
float vertices[] = {
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f,
0.0f, 0.5f, 0.0f
};
GLuint VBO, VAO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
while (!glfwWindowShouldClose(window)) {
glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(shaderProgram);
glBindVertexArray(VAO);
glDrawArrays(GL_TRIANGLES, 0, 3);
glfwSwapBuffers(window);
glfwPollEvents();
}
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
glfwTerminate();
return 0;
}
🧬 shader.vert（頂点シェーダー）
#version 330 core
layout(location = 0) in vec3 aPos;
void main() {
gl_Position = vec4(aPos, 1.0);
}
🎨 shader.frag（フラグメントシェーダー）
#version 330 core
out vec4 FragColor;
void main() {
FragColor = vec4(1.0, 0.2, 0.2, 1.0); // 赤
}
🛠 CMakeLists.txt（ビルド設定）
cmake_minimum_required(VERSION 3.5)
project(glsl_sample)
set(CMAKE_C_STANDARD 99)
add_executable(glsl_sample main.c)
find_package(OpenGL REQUIRED)
include_directories(${OPENGL_INCLUDE_DIRS})
# MSYS2パス用のヒント（MINGW64環境）
include_directories("C:/msys64/mingw64/include")
link_directories("C:/msys64/mingw64/lib")
target_link_libraries(glsl_sample glfw3 glew32 opengl32 gdi32)
🔧 ビルド手順（MSYS2 MINGW64 シェル）
cd /path/to/glsl_sample
mkdir build
cd build
cmake ..
make
./glsl_sample.exe
📌 備考
- 画面に赤い三角形が表示されれば成功です。
- GLSLシェーダーは外部ファイルから読み込んで動的にコンパイルしています。
shader.vertやshader.fragを編集すればリアルタイムに変更反映できます。
-bash: cmake: command not found
ChatGPT said:
それは cmake がインストールされていないエラーです。
MSYS2のMINGW64環境では、以下のコマンドで cmake をインストールできます。
✅ cmake のインストール（MSYS2 MINGW64）
pacman -S mingw-w64-x86_64-cmake必ず MSYS2の「MINGW64」シェル で実行してください（/mingw64/bin がPATHに入っている状態）
furcr@furcraea_built MINGW64 ~
$ pacman -S mingw-w64-x86_64-cmake
resolving dependencies...
looking for conflicting packages...
Packages (24) mingw-w64-x86_64-brotli-1.1.0-5 mingw-w64-x86_64-c-ares-1.34.5-1
mingw-w64-x86_64-ca-certificates-20241223-1 mingw-w64-x86_64-cppdap-1.65-1
mingw-w64-x86_64-curl-8.14.1-1 mingw-w64-x86_64-gnutls-3.8.9-4
mingw-w64-x86_64-jsoncpp-1.9.6-3 mingw-w64-x86_64-libarchive-3.8.1-2
mingw-w64-x86_64-libb2-0.98.1-2 mingw-w64-x86_64-libidn2-2.3.8-2
mingw-w64-x86_64-libpsl-0.21.5-3 mingw-w64-x86_64-libssh2-1.11.1-1
mingw-w64-x86_64-libtasn1-4.20.0-1 mingw-w64-x86_64-libunistring-1.3-1
mingw-w64-x86_64-libuv-1.51.0-1 mingw-w64-x86_64-lz4-1.10.0-1
mingw-w64-x86_64-nettle-3.10.2-1 mingw-w64-x86_64-nghttp2-1.66.0-1
mingw-w64-x86_64-nghttp3-1.10.1-1 mingw-w64-x86_64-ngtcp2-1.13.0-2
mingw-w64-x86_64-ninja-1.13.0-1 mingw-w64-x86_64-p11-kit-0.25.5-1
mingw-w64-x86_64-rhash-1.4.5-1 mingw-w64-x86_64-cmake-4.0.3-1
Total Download Size: 19.46 MiB
Total Installed Size: 106.07 MiB
:: Proceed with installation? [Y/n] Enter
:: Retrieving packages...
mingw-w64-x86_64-gnutls-3.... 2.2 MiB 1013 KiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-curl-8.14... 1552.7 KiB 666 KiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-libarchiv... 876.9 KiB 374 KiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-libunistr... 832.7 KiB 349 KiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-cmake-4.0... 9.2 MiB 3.44 MiB/s 00:03 [###############################] 100%
mingw-w64-x86_64-cppdap-1.... 491.9 KiB 1152 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-nettle-3.... 563.7 KiB 1112 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-brotli-1.... 420.5 KiB 947 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-ca-certif... 395.0 KiB 884 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-c-ares-1.... 309.2 KiB 671 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libssh2-1... 309.0 KiB 719 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-ngtcp2-1.... 269.4 KiB 622 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libuv-1.5... 221.5 KiB 480 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libtasn1-... 196.3 KiB 458 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-nghttp2-1... 194.9 KiB 435 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-p11-kit-0... 422.7 KiB 245 KiB/s 00:02 [###############################] 100%
mingw-w64-x86_64-rhash-1.4... 219.0 KiB 301 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-ninja-1.1... 186.3 KiB 350 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-jsoncpp-1... 176.1 KiB 387 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libidn2-2... 170.6 KiB 377 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-lz4-1.10.... 166.9 KiB 328 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-nghttp3-1... 124.7 KiB 295 KiB/s 00:00 [###############################] 100%
mingw-w64-x86_64-libpsl-0.... 94.4 KiB 181 KiB/s 00:01 [###############################] 100%
mingw-w64-x86_64-libb2-0.9... 23.7 KiB 53.5 KiB/s 00:00 [###############################] 100%
Total (24/24) 19.5 MiB 3.73 MiB/s 00:05 [###############################] 100%
(24/24) checking keys in keyring [###############################] 100%
(24/24) checking package integrity [###############################] 100%
(24/24) loading package files [###############################] 100%
(24/24) checking for file conflicts [###############################] 100%
(24/24) checking available disk space [###############################] 100%
:: Processing package changes...
( 1/24) installing mingw-w64-x86_64-cppdap [###############################] 100%
( 2/24) installing mingw-w64-x86_64-c-ares [###############################] 100%
( 3/24) installing mingw-w64-x86_64-brotli [###############################] 100%
( 4/24) installing mingw-w64-x86_64-libunistring [###############################] 100%
( 5/24) installing mingw-w64-x86_64-libidn2 [###############################] 100%
( 6/24) installing mingw-w64-x86_64-libpsl [###############################] 100%
( 7/24) installing mingw-w64-x86_64-libtasn1 [###############################] 100%
( 8/24) installing mingw-w64-x86_64-p11-kit [###############################] 100%
( 9/24) installing mingw-w64-x86_64-ca-certificates [###############################] 100%
(10/24) installing mingw-w64-x86_64-libssh2 [###############################] 100%
(11/24) installing mingw-w64-x86_64-nghttp2 [###############################] 100%
(12/24) installing mingw-w64-x86_64-nettle [###############################] 100%
(13/24) installing mingw-w64-x86_64-gnutls [###############################] 100%
(14/24) installing mingw-w64-x86_64-ngtcp2 [###############################] 100%
(15/24) installing mingw-w64-x86_64-nghttp3 [###############################] 100%
(16/24) installing mingw-w64-x86_64-curl [###############################] 100%
(17/24) installing mingw-w64-x86_64-jsoncpp [###############################] 100%
(18/24) installing mingw-w64-x86_64-libb2 [###############################] 100%
(19/24) installing mingw-w64-x86_64-lz4 [###############################] 100%
(20/24) installing mingw-w64-x86_64-libarchive [###############################] 100%
(21/24) installing mingw-w64-x86_64-libuv [###############################] 100%
(22/24) installing mingw-w64-x86_64-ninja [###############################] 100%
(23/24) installing mingw-w64-x86_64-rhash [###############################] 100%
(24/24) installing mingw-w64-x86_64-cmake [###############################] 100%
Optional dependencies for mingw-w64-x86_64-cmake
mingw-w64-x86_64-emacs: for cmake emacs mode
furcr@furcraea_built MINGW64 ~
$
✅ インストール確認
which cmake$ which cmake
/mingw64/bin/cmake
これで /mingw64/bin/cmake と表示されれば OK。あとは前の手順どおり cmake .. && make でビルドできます。
furcr@furcraea_built MINGW64 ~
$ cd C:\glsl_sample
furcr@furcraea_built MINGW64 /c/glsl_sample
$ cd build
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ cmake ..
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 has been removed from CMake.
Update the VERSION argument <min> value. Or, use the <min>...<max> syntax
to tell CMake that the project requires at least <min> but has been updated
to work with policies introduced by <max> or earlier.
Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
-- Configuring incomplete, errors occurred!
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$
完璧です、CMakeはちゃんと動いています。
出ているエラーは単に CMakeLists.txt のバージョン指定が古いというだけなので、すぐに修正できます。
✅ 修正方法：CMakeLists.txt の1行目を更新
🔧 変更前:
cmake_minimum_required(VERSION 3.0)✅ 変更後
cmake_minimum_required(VERSION 3.5)または、より安全にするならこうしてもOKです：
cmake_minimum_required(VERSION 3.5...3.27)
これは「3.5以上〜3.27以下で対応」と明記する形です（今のMSYS2ではだいたい3.27〜3.29あたりが入ります）。
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ make
-bash: make: command not found
なので
🧩 補足：make がないとき
pacman -S make
furcr@furcraea_built MINGW64 ~
$ pacman -S make
resolving dependencies...
looking for conflicting packages...
Packages (1) make-4.4.1-2
Total Download Size: 0.50 MiB
Total Installed Size: 1.61 MiB
:: Proceed with installation? [Y/n]
:: Retrieving packages...
make-4.4.1-2-x86_64 507.6 KiB 320 KiB/s 00:02 [###############################] 100%
(1/1) checking keys in keyring [###############################] 100%
(1/1) checking package integrity [###############################] 100%
(1/1) loading package files [###############################] 100%
(1/1) checking for file conflicts [###############################] 100%
(1/1) checking available disk space [###############################] 100%
:: Processing package changes...
(1/1) installing make [###############################] 100%
:: Running post-transaction hooks...
(1/1) Updating the info directory file...
furcr@furcraea_built MINGW64 ~
$
または MINGW版を使うなら：
pacman -S mingw-w64-x86_64-make
furcr@furcraea_built MINGW64 ~
$ pacman -S mingw-w64-x86_64-make
warning: mingw-w64-x86_64-make-4.4.1-3 is up to date -- reinstalling
resolving dependencies...
looking for conflicting packages...
Packages (1) mingw-w64-x86_64-make-4.4.1-3
Total Installed Size: 0.29 MiB
Net Upgrade Size: 0.00 MiB
:: Proceed with installation? [Y/n]
(1/1) checking keys in keyring [###############################] 100%
(1/1) checking package integrity [###############################] 100%
(1/1) loading package files [###############################] 100%
(1/1) checking for file conflicts [###############################] 100%
(1/1) checking available disk space [###############################] 100%
:: Processing package changes...
(1/1) reinstalling mingw-w64-x86_64-make [###############################] 100%
furcr@furcraea_built MINGW64 ~
$
その場合、呼び出しは mingw32-make になるかもしれません。
対処法：明示的に Makefile を出させる
🔁 ビルドフォルダをクリア
まず、前回のビルドキャッシュを消します：
cd ..
rm -rf build
mkdir build
cd build
✅ CMakeを正しく実行（MSYS Makefiles 指定）
cmake -G "MSYS Makefiles" ..
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ cmake -G "MSYS Makefiles" ..
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.10 will be removed from a future version of
CMake.
Update the VERSION argument <min> value. Or, use the <min>...<max> syntax
to tell CMake that the project requires at least <min> but has been updated
to work with policies introduced by <max> or earlier.
-- The C compiler identification is GNU 15.1.0
-- The CXX compiler identification is GNU 15.1.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/cc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/c++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenGL: opengl32
-- Configuring done (1.2s)
-- Generating done (0.0s)
-- Build files have been written to: C:/glsl_sample/build
これで Makefile がちゃんと生成されるはずです。
📌 補足：-G オプションとは？
CMakeはデフォルトで “NMake” や “Visual Studio” 用のプロジェクトファイルを生成することがあります。
MSYS2で make を使いたい場合は、必ず -G "MSYS Makefiles" を指定しないと Makefile が生成されません。
🔨 再度ビルド
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ make
[ 50%] Building C object CMakeFiles/glsl_sample.dir/main.c.obj
[100%] Linking C executable glsl_sample.exe
[100%] Built target glsl_sample
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$
🧪 もしそれでもだめなら
最終手段として、以下で手動ビルドできます：
gcc ../main.c -o glsl_sample.exe -lglfw3 -lglew32 -lopengl32 -lgdi32
✅ 次にやること：実行！
cd ..
./glsl_sample.exe
✅ やり直し
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ cd ..
furcr@furcraea_built MINGW64 /c/glsl_sample
$ rm -rf build
furcr@furcraea_built MINGW64 /c/glsl_sample
$ mkdir build
furcr@furcraea_built MINGW64 /c/glsl_sample
$ cd build
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ cmake -G "MSYS Makefiles" ..
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.10 will be removed from a future version of
CMake.
Update the VERSION argument <min> value. Or, use the <min>...<max> syntax
to tell CMake that the project requires at least <min> but has been updated
to work with policies introduced by <max> or earlier.
-- The C compiler identification is GNU 15.1.0
-- The CXX compiler identification is GNU 15.1.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/cc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/c++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenGL: opengl32
-- Configuring done (1.2s)
-- Generating done (0.0s)
-- Build files have been written to: C:/glsl_sample/build
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ make
[ 50%] Building C object CMakeFiles/glsl_sample.dir/main.c.obj
[100%] Linking C executable glsl_sample.exe
[100%] Built target glsl_sample
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$ ./glsl_sample.exe
Failed to open shader.vert
furcr@furcraea_built MINGW64 /c/glsl_sample/build
$
できたああああああ
