git: 3c887a65b8a5 - main - math/igraph: Fix build on FreeBSD-13.0

The branch main has been updated by wen:

URL: https://cgit.FreeBSD.org/ports/commit/?id=3c887a65b8a5ba4f7d825fe0a19ac73de90c86b2

commit 3c887a65b8a5ba4f7d825fe0a19ac73de90c86b2
Author:     Wen Heping <wen@FreeBSD.org>
AuthorDate: 2022-01-04 07:57:49 +0000
Commit:     Wen Heping <wen@FreeBSD.org>
CommitDate: 2022-01-04 07:57:49 +0000

    math/igraph: Fix build on FreeBSD-13.0
---
 math/igraph/Makefile                                    |  7 ++++++-
 math/igraph/files/extra-patch-etc_cmake_compilers.cmake | 10 ++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/math/igraph/Makefile b/math/igraph/Makefile
index 49082e255801..991293edf933 100644
--- a/math/igraph/Makefile
+++ b/math/igraph/Makefile
@@ -27,4 +27,9 @@ BINARY_ALIAS=	git=false
 pre-configure:
 	@${ECHO} ${PORTVERSION} > ${WRKSRC}/IGRAPH_VERSION
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+.if ${OSVERSION} >= 1300000 && ${OSVERSION} < 1300523
+EXTRA_PATCHES=	${PATCHDIR}/extra-patch-etc_cmake_compilers.cmake
+.endif
+
+.include <bsd.port.post.mk>
diff --git a/math/igraph/files/extra-patch-etc_cmake_compilers.cmake b/math/igraph/files/extra-patch-etc_cmake_compilers.cmake
new file mode 100644
index 000000000000..84b1f3c4b264
--- /dev/null
+++ b/math/igraph/files/extra-patch-etc_cmake_compilers.cmake
@@ -0,0 +1,10 @@
+--- etc/cmake/compilers.cmake.orig	2022-01-04 06:55:25 UTC
++++ etc/cmake/compilers.cmake
+@@ -31,7 +31,6 @@ macro(use_all_warnings TARGET_NAME)
+     target_compile_options(${TARGET_NAME} PRIVATE
+       # GCC-style compilers:
+       $<$<C_COMPILER_ID:GCC,Clang,AppleClang,Intel>:
+-        $<$<BOOL:${IGRAPH_WARNINGS_AS_ERRORS}>:-Werror>
+         -Wall -Wextra -pedantic
+         -Wno-unused-function -Wno-unused-parameter -Wno-sign-compare
+       >