core: fix detection of libgcrypt ≥ 1.11 (debian #1071960)

Use pkg-config to detect libgcrypt, since command `libgcrypt-config` is not
available any more.

Remove patches for Debian/Raspbian Buster and Ubuntu Bionic: detection of
libgcrypt don't work any more with version 1.8.4 on Debian Buster and 1.8.1 on
Ubuntu Bionic (both versions don't provide the file `libgcrypt.pc`).

9 files changed, 7 insertions, 215 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd9de77d4..ebb2423c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ### Fixed
 
+- core: fix detection of libgcrypt ≥ 1.11 ([debian #1071960](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1071960))
 - irc: close /list buffer when the server buffer is closed ([#2121](https://github.com/weechat/weechat/issues/2121))
 - php: fix return value of function hdata_longlong
 - tcl: fix return value of function hdata_longlong ([#2119](https://github.com/weechat/weechat/issues/2119))
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f34ba06ce..d0f52cb81 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -206,9 +206,10 @@ if(ENABLE_LARGEFILE)
 endif()
 
 # Check for libgcrypt
-find_package(GCRYPT REQUIRED)
+pkg_check_modules(LIBGCRYPT REQUIRED libgcrypt)
 add_definitions(-DHAVE_GCRYPT)
-list(APPEND EXTRA_LIBS ${GCRYPT_LDFLAGS})
+include_directories(${LIBGCRYPT_INCLUDE_DIRS})
+list(APPEND EXTRA_LIBS ${LIBGCRYPT_LDFLAGS})
 
 # Check for GnuTLS
 find_package(GnuTLS REQUIRED)
diff --git a/cmake/FindGCRYPT.cmake b/cmake/FindGCRYPT.cmake
deleted file mode 100644
index 96f4cecc0..000000000
--- a/cmake/FindGCRYPT.cmake
+++ /dev/null
@@ -1,53 +0,0 @@
-#
-# Copyright (C) 2003-2024 Sébastien Helleu <flashcode@flashtux.org>
-#
-# This file is part of WeeChat, the extensible chat client.
-#
-# WeeChat is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# WeeChat is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with WeeChat.  If not, see <https://www.gnu.org/licenses/>.
-#
-
-# - Find Gcrypt
-# This module finds if libgcrypt is installed and determines where
-# the include files and libraries are.
-#
-# This code sets the following variables:
-#
-#  GCRYPT_CFLAGS = cflags to use to compile
-#  GCRYPT_LDFLAGS = ldflags to use to compile
-#
-
-find_program(LIBGCRYPT_CONFIG_EXECUTABLE NAMES libgcrypt-config)
-
-set(GCRYPT_LDFLAGS)
-set(GCRYPT_CFLAGS)
-
-if(LIBGCRYPT_CONFIG_EXECUTABLE)
-
-  execute_process(COMMAND ${LIBGCRYPT_CONFIG_EXECUTABLE} --libs RESULT_VARIABLE _return_VALUE OUTPUT_VARIABLE GCRYPT_LDFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
-  execute_process(COMMAND ${LIBGCRYPT_CONFIG_EXECUTABLE} --cflags RESULT_VARIABLE _return_VALUE OUTPUT_VARIABLE GCRYPT_CFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
-
-  if(NOT DEFINED ${GCRYPT_CFLAGS})
-    set(GCRYPT_CFLAGS " ")
-  endif()
-
-endif()
-
-# handle the QUIETLY and REQUIRED arguments and set GCRYPT_FOUND to TRUE if
-# all listed variables are TRUE
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(GCRYPT REQUIRED_VARS GCRYPT_LDFLAGS GCRYPT_CFLAGS)
-
-if(GCRYPT_FOUND)
-  mark_as_advanced(GCRYPT_CFLAGS GCRYPT_LDFLAGS)
-endif()
diff --git a/src/plugins/irc/CMakeLists.txt b/src/plugins/irc/CMakeLists.txt
index 792b9ed94..050b4c6c7 100644
--- a/src/plugins/irc/CMakeLists.txt
+++ b/src/plugins/irc/CMakeLists.txt
@@ -56,7 +56,7 @@ set(LINK_LIBS)
 include_directories(${GNUTLS_INCLUDE_PATH})
 list(APPEND LINK_LIBS ${GNUTLS_LIBRARY})
 
-list(APPEND LINK_LIBS ${GCRYPT_LDFLAGS})
+list(APPEND LINK_LIBS ${LIBGCRYPT_LDFLAGS})
 
 if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   # link with resolv lib on macOS
diff --git a/src/plugins/relay/CMakeLists.txt b/src/plugins/relay/CMakeLists.txt
index c175d50bd..22853b555 100644
--- a/src/plugins/relay/CMakeLists.txt
+++ b/src/plugins/relay/CMakeLists.txt
@@ -63,7 +63,7 @@ set(LINK_LIBS)
 include_directories(${GNUTLS_INCLUDE_PATH})
 list(APPEND LINK_LIBS ${GNUTLS_LIBRARY})
 
-list(APPEND LINK_LIBS ${GCRYPT_LDFLAGS})
+list(APPEND LINK_LIBS ${LIBGCRYPT_LDFLAGS})
 
 list(APPEND LINK_LIBS ${ZLIB_LIBRARY})
 
diff --git a/src/plugins/xfer/CMakeLists.txt b/src/plugins/xfer/CMakeLists.txt
index f4f34b52e..334876689 100644
--- a/src/plugins/xfer/CMakeLists.txt
+++ b/src/plugins/xfer/CMakeLists.txt
@@ -34,7 +34,7 @@ set_target_properties(xfer PROPERTIES PREFIX "")
 
 set(LINK_LIBS)
 
-list(APPEND LINK_LIBS ${GCRYPT_LDFLAGS})
+list(APPEND LINK_LIBS ${LIBGCRYPT_LDFLAGS})
 
 if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   # link with resolv lib on macOS
diff --git a/tools/debian/patches/weechat_debian_buster.patch b/tools/debian/patches/weechat_debian_buster.patch
deleted file mode 100644
index 096c50ef3..000000000
--- a/tools/debian/patches/weechat_debian_buster.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-diff --git a/debian-devel/control b/debian-devel/control
-index a5d24b6a8..edae1ec5e 100644
---- a/debian-devel/control
-+++ b/debian-devel/control
-@@ -14,7 +14,7 @@ Build-Depends:
-     libaspell-dev,
-     liblua5.3-dev,
-     tcl8.6-dev,
--    guile-3.0-dev,
-+    guile-2.2-dev,
-     php-dev, libphp-embed, libargon2-dev, libsodium-dev,
-     libxml2-dev,
-     libcurl4-gnutls-dev,
-diff --git a/debian-devel/rules b/debian-devel/rules
-index cab713c93..d2756333b 100755
---- a/debian-devel/rules
-+++ b/debian-devel/rules
-@@ -8,6 +8,7 @@ override_dh_auto_configure:
- 	dh_auto_configure --buildsystem=cmake -- \
- 		-DCMAKE_INSTALL_PREFIX:FILEPATH=/usr \
- 		-DLIBDIR=/usr/lib/${DEB_HOST_MULTIARCH} \
-+		-DENABLE_CJSON:BOOL=OFF \
- 		-DENABLE_DOC:BOOL=ON \
- 		-DENABLE_MAN:BOOL=ON \
- 		-DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
-diff --git a/debian-stable/control b/debian-stable/control
-index a75e6fee5..50c4f69a8 100644
---- a/debian-stable/control
-+++ b/debian-stable/control
-@@ -14,7 +14,7 @@ Build-Depends:
-     libaspell-dev,
-     liblua5.3-dev,
-     tcl8.6-dev,
--    guile-3.0-dev,
-+    guile-2.2-dev,
-     php-dev, libphp-embed, libargon2-dev, libsodium-dev,
-     libxml2-dev,
-     libcurl4-gnutls-dev,
-diff --git a/debian-stable/rules b/debian-stable/rules
-index cab713c93..d2756333b 100755
---- a/debian-stable/rules
-+++ b/debian-stable/rules
-@@ -8,6 +8,7 @@ override_dh_auto_configure:
- 	dh_auto_configure --buildsystem=cmake -- \
- 		-DCMAKE_INSTALL_PREFIX:FILEPATH=/usr \
- 		-DLIBDIR=/usr/lib/${DEB_HOST_MULTIARCH} \
-+		-DENABLE_CJSON:BOOL=OFF \
- 		-DENABLE_DOC:BOOL=ON \
- 		-DENABLE_MAN:BOOL=ON \
- 		-DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
diff --git a/tools/debian/patches/weechat_raspbian_buster.patch b/tools/debian/patches/weechat_raspbian_buster.patch
deleted file mode 120000
index 3b84ccec9..000000000
--- a/tools/debian/patches/weechat_raspbian_buster.patch
+++ /dev/null
@@ -1 +0,0 @@
-weechat_debian_buster.patch
\ No newline at end of file
diff --git a/tools/debian/patches/weechat_ubuntu_bionic.patch b/tools/debian/patches/weechat_ubuntu_bionic.patch
deleted file mode 100644
index 94c0aed2b..000000000
--- a/tools/debian/patches/weechat_ubuntu_bionic.patch
+++ /dev/null
@@ -1,106 +0,0 @@
-diff --git a/debian-devel/compat b/debian-devel/compat
-index 48082f72f..b4de39476 100644
---- a/debian-devel/compat
-+++ b/debian-devel/compat
-@@ -1 +1 @@
--12
-+11
-diff --git a/debian-devel/control b/debian-devel/control
-index a5d24b6a8..81ae98045 100644
---- a/debian-devel/control
-+++ b/debian-devel/control
-@@ -5,24 +5,23 @@ Maintainer: Sébastien Helleu <flashcode@flashtux.org>
- Build-Depends:
-     asciidoctor (>= 1.5.4),
-     ruby-pygments.rb,
--    debhelper (>= 12),
-+    debhelper (>= 11),
-     cmake, pkg-config,
--    libncurses-dev,
-+    libncursesw5-dev,
-     gem2deb,
-     libperl-dev,
-     python3-dev,
-     libaspell-dev,
-     liblua5.3-dev,
-     tcl8.6-dev,
--    guile-3.0-dev,
--    php-dev, libphp-embed, libargon2-dev, libsodium-dev,
-+    guile-2.2-dev,
-+    php-dev, libphp-embed, libargon2-0-dev, libsodium-dev,
-     libxml2-dev,
-     libcurl4-gnutls-dev,
-     libgcrypt20-dev,
-     libgnutls28-dev,
-     libzstd-dev,
--    zlib1g-dev,
--    libcjson-dev
-+    zlib1g-dev
- Standards-Version: 4.6.2
- Homepage: https://weechat.org/
- Vcs-Git: https://salsa.debian.org/kolter/weechat.git
-diff --git a/debian-devel/rules b/debian-devel/rules
-index cab713c93..d2756333b 100755
---- a/debian-devel/rules
-+++ b/debian-devel/rules
-@@ -8,6 +8,7 @@ override_dh_auto_configure:
- 	dh_auto_configure --buildsystem=cmake -- \
- 		-DCMAKE_INSTALL_PREFIX:FILEPATH=/usr \
- 		-DLIBDIR=/usr/lib/${DEB_HOST_MULTIARCH} \
-+		-DENABLE_CJSON:BOOL=OFF \
- 		-DENABLE_DOC:BOOL=ON \
- 		-DENABLE_MAN:BOOL=ON \
- 		-DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
-diff --git a/debian-stable/compat b/debian-stable/compat
-index 48082f72f..b4de39476 100644
---- a/debian-stable/compat
-+++ b/debian-stable/compat
-@@ -1 +1 @@
--12
-+11
-diff --git a/debian-stable/control b/debian-stable/control
-index a75e6fee5..b39bf88dc 100644
---- a/debian-stable/control
-+++ b/debian-stable/control
-@@ -5,24 +5,23 @@ Maintainer: Emmanuel Bouthenot <kolter@debian.org>
- Build-Depends:
-     asciidoctor (>= 1.5.4),
-     ruby-pygments.rb,
--    debhelper (>= 12),
-+    debhelper (>= 11),
-     cmake, pkg-config,
--    libncurses-dev,
-+    libncursesw5-dev,
-     gem2deb,
-     libperl-dev,
-     python3-dev,
-     libaspell-dev,
-     liblua5.3-dev,
-     tcl8.6-dev,
--    guile-3.0-dev,
--    php-dev, libphp-embed, libargon2-dev, libsodium-dev,
-+    guile-2.2-dev,
-+    php-dev, libphp-embed, libargon2-0-dev, libsodium-dev,
-     libxml2-dev,
-     libcurl4-gnutls-dev,
-     libgcrypt20-dev,
-     libgnutls28-dev,
-     libzstd-dev,
--    zlib1g-dev,
--    libcjson-dev
-+    zlib1g-dev
- Standards-Version: 4.6.2
- Homepage: https://weechat.org/
- Vcs-Git: https://salsa.debian.org/kolter/weechat.git
-diff --git a/debian-stable/rules b/debian-stable/rules
-index cab713c93..d2756333b 100755
---- a/debian-stable/rules
-+++ b/debian-stable/rules
-@@ -8,6 +8,7 @@ override_dh_auto_configure:
- 	dh_auto_configure --buildsystem=cmake -- \
- 		-DCMAKE_INSTALL_PREFIX:FILEPATH=/usr \
- 		-DLIBDIR=/usr/lib/${DEB_HOST_MULTIARCH} \
-+		-DENABLE_CJSON:BOOL=OFF \
- 		-DENABLE_DOC:BOOL=ON \
- 		-DENABLE_MAN:BOOL=ON \
- 		-DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \