fix: #include rbus headers using quotes instead of angle brackets

[sheabot]

The rbus includes are using angle brackets like #include <rbus_value.h>, which causes the compiler to search for these includes in the system include paths or the include paths explicitly specified in CFLAGS. Since the rbus includes are installed in a subdirectory /usr/include/rbus, the compiler cannot find them unless the rbus include directory is added to CFLAGS. Using quotes instead of angle brackets will cause the compiler to look in the same directory as the rbus.h file first.

Here is a basic Dockerfile test case:

Not Working:

FROM ubuntu:20.04

ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && \
    apt-get install -y build-essential cmake git pkg-config

WORKDIR /work

RUN git clone https://github.com/rdkcentral/rbus && \
    cmake -Hrbus -Bbuild/rbus -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_FOR_DESKTOP=ON -DCMAKE_BUILD_TYPE=Debug && \
    make -C build/rbus && \
    make -C build/rbus install

RUN <<EOF cat > main.c
#include <rbus/rbus.h>
int main() {
    return 0;
}
EOF

RUN gcc -o main main.c

Working:

FROM ubuntu:20.04

ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && \
    apt-get install -y build-essential cmake git pkg-config

WORKDIR /work

RUN git clone https://github.com/sheabot/rbus -b bugfix/include-syntax && \
    cmake -Hrbus -Bbuild/rbus -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_FOR_DESKTOP=ON -DCMAKE_BUILD_TYPE=Debug && \
    make -C build/rbus && \
    make -C build/rbus install

RUN <<EOF cat > main.c
#include <rbus/rbus.h>
int main() {
    return 0;
}
EOF

RUN gcc -o main main.c

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[karuna2git]

The change looks good and worth accepting it.

My mistake. Its the external application that includes rbus.h gets the build error..