pidgin/pidgin

Use LT_LIB_M to determine if we need to link to the math library and link Pidgin to the X11 libraries
release-2.x.y
2021-04-11, Gary Kramlich
132d17234930
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

Testing Done:
Installed and ran locally.

Reviewed at https://reviews.imfreedom.org/r/608/
#
# Makefile.mingw
#
# Description: Makefile for perl plugin loader plugin.
#
PIDGIN_TREE_TOP := ../../..
include $(PIDGIN_TREE_TOP)/libpurple/win32/global.mak
##
## TARGET DEFINITIONS
##
.PHONY: all install clean
all:
$(MAKE) -C ./common -f $(MINGW_MAKEFILE)
install: all $(PIDGIN_INSTALL_PLUGINS_DIR)
$(MAKE) -C ./common -f $(MINGW_MAKEFILE) install
##
## CLEAN RULES
##
clean:
$(MAKE) -C ./common -f $(MINGW_MAKEFILE) clean