Use LT_LIB_M to determine if we need to link to the math library and link Pidgin to the X11 libraries

Review Request #608 — Created April 9, 2021 and submitted — Latest diff uploaded

Information

pidgin/pidgin
release-2.x.y
e03901b4ae41

Reviewers

Use LT_LIB_M to determine if we need to link to the math library and link Pidgin to the X11 libraries

Gentoo ran into an issue with the gold linker without -lm. The original patch
and work came from Justin Lechner. https://bugs.gentoo.org/386079

Gentoo also ran into an issue with X11_LIBS not being added to pidgin. This
should already be implicit everywhere except for homebrew which patches X11
out of their build. Original patch/work came from and. https://bugs.gentoo.org/500762

Installed and ran locally.