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Makefile.include: Link with $(CXX) for C++ code

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When mixing C and C++ code, $(CXX) has to be used for linking. Prior to this
commit, the build system automatically uses $(CXX) if the application contains
C++ source code. However, if C++ is used in an module only, $(CC) is still
used. This has not let to problems, as internal modules must be written in C.
For external modules this restriction does not apply.

This commit checks if the cpp feature is used. In that case, $(CXX) is used
for linking over $(CC). This way external modules may use C++ code.
This commit is contained in:
Marian Buschsieweke 2020-07-09 21:15:38 +02:00
parent f3bce19646
commit 267c8e1620
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GPG Key ID: 61F64C6599B1539F
1 changed files with 3 additions and 1 deletions
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Makefile.include
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@ -536,7 +536,9 @@ else
endif
# variables used to compile and link c++
CPPMIX ?= $(if $(wildcard *.cpp),1,)
ifneq (,$(filter cpp,$(FEATURES_USED)))
CPPMIX ?= 1
endif
# We assume $(LINK) to be gcc-like. Use `LINKFLAGPREFIX :=` for ld-like linker options.
LINKFLAGPREFIX ?= -Wl,